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XC9110/XC9111 Series
PFM Controlled Step-Up DC/DC Converter / Controller ICs
ETR0406 004
The XC9110/9111 series is a group of PFM controlled step-up DC/DC converter/controller ICs designed to generate low supply voltage by the combination of PFM control and CMOS structure. The series is ideal for applications where a longer battery life is needed such as in portable communication equipment. With a built-in 2.5N-channel driver transistor, the XC9110A/C/E and XC9111A/C/E types provide a step-up operation by using only a coil, a capacitor, and a diode connected externally. The XC9110/9111B, D and F versions can be used with an external transistor for applications requiring larger currents. Output voltage is internally programmable in a range from 1.5V to 7.0V in increments of 100mV (accuracy:2.5%). Maximum oscillation frequency is set to 100kHz for XC9110/9111 series. (At light loads, it is set to 180kHz for the XC9111 series.) Options include products equipped with a CE pin (C and D versions) that allows the IC to be shut down thereby reducing supply current and with separated VDD/VOUT pins (E and F versions) to separate the power supply block and the output voltage detect block. With the XC9110 series, maximum duty cycle is set to 75% (VDD=3.3V) making it suitable for use with large current operations. The XC9111 series automatically switches duty ratio between 56% & 75% (VDD=3.3V) when it senses changes in load to drop output ripple voltage and can support both large and small currents. The external transistor types (B/D/F types) can be provided for applications, which require larger currents.
GENERAL DESCRIPTION
APPLICATIONS
Mobile phones Various palm top equipment Cameras, VCRs Various portable equipment
FEATURES
Operating (Input) Voltage Range : 0.9V ~ 10.0V Output Voltage Range : 1.5V~7.0V (100mV increments, accuracy 2.5%) Maximum Oscillation Frequency : 100kHz (accuracy 15%) 180kHz (for the XC9111 series, duty ratio: 56% at light loads) Built-in Switching N-ch Transistor : A/C/E type ON Resistance 2.5 (VDD=3.0V) External Transistor Types : B/D/F type Lx Limit Voltage : E type: more than VDD=2.0V : A/C type: more than VOUT=2.0V Low Supply Current : 2.0A (When operating, VOUT=3V) Small Package : SOT-23 & SOT89 (for XC9111 series), SOT-25, USP-6C
TYPICAL APPLICATION CIRCUIT
C type circuit
TYPICAL PERFORMANCE
CHARACTERISTICS
100
XC9111E331MR L=100H(CR54), CL47F(Tantalum) SD: XB01SB04A2BR
L
5
4
80
Efficiency:EFFI(%)
(TOP VIEW) SOT-25 VIN + CIN 1 2 3 VOUT SD + CL (Tantalum)
3.0V 60 1.5V 40 1.2V VIN=0.9V 20 2.4V
GND CE
0 0 50 1 00 150 2 00 Output Current:IOUT(mA) 250 3 00
1/35
XC9110/XC9111 Series
PIN CONFIGURATION
Lx/EXT V SS
5
4
1
2
3
CE/V OUT V OUT/V DD NC
SOT-23 (TOP VIEW)
SOT-25 (TOP VIEW) SOT-89 (TOP VIEW)
USP-6C (BOTTOM VIEW)
*The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking so as to enhance mounting strength and heat release. If the pad needs to be connected to other pins, it should be connected to the pin No.1.
PIN ASSIGNMENT
XC9111A/B
PIN NUMBER SOT-23 SOT-89 A B A B 1 1 1 1 3 3 2 2 2 3 2 3
PIN NAME VSS VOUT LX EXT
FUNCTIONS : Ground : Output Voltage Montior, Internal Power Supply : Switch : External Switching transistor drive XC9110//9111C/D/E/F
PIN NUMBER SOT-25 C 4 5 1 2 3 D 4 5 1 2 3 E 2 4 5 1 3 F 2 4 5 1 3 C 6 4 3 USP-6C D 6 4 3 E 1 6 4 F 1 6 4 PIN NAME VDD VSS EXT Lx CE VOUT NC FUNCTIONS Internal Power Supply Ground External switching transistor drive Switch Chip Enable Output voltage monitor No connection
1 1 3 3 2,5 2,5 2,5 2,5
2/35
XC9110/XC9111 Series
PRODUCT CLASSIFICATION
Selection Guide
Ordering Information
XC9110 : PFM control, 75% duty XC9111 : PFM control, 56% / 75% duty variable DESIGNATOR DESCRIPTION SYMBOL A B C D E F 15 ~ 70 1 M Package P E R L DESCRIPTION : VDD / VOUT common type (for XC9111series) : VDD / VOUT common type (for XC9111series) : CE pin (5 pin) : CE pin (5 pin) : VDD / VOUT separated type (5 pin) : VDD / VOUT separated type (5 pin) : ex. 3.5V output = 3, = 5 : 100kHz : SOT-23 (for A and B types) Semi-Custom : SOT-25 (for C, D, F types) : SOT-89 (for A and B types) Semi-Custom : USP-6C (for C, D, F types) : Embossed tape, standard feed : Embossed tape, reverse feed Built-in Transistor External Transistor Built-in Transistor External Transistor Built-in Transistor External Transistor
CE Function

Output Voltage Maximum Oscillation Frequency
Device Orientation
3/35
XC9110/XC9111 Series
BLOCK DIAGRAMS
XC9111 A and B series
Note: The XC9110 series, Tr. Built-in type, uses the Lx pin and the XC9111 series, external Tr. Type, uses the EXT pin. The duty ratio of the XC9111 series automatically varies between 56% (oscillation frequency 180kHz) and 75% (oscillation frequency (FOSC) 100kHz). The VLx limit function only applies to the XC9110/9111 A types. * The duty ratio depends on power supply. Please refer to the electrical characteristics on duty against output voltage you use.
XC9110 / 9111 C and D series
Note: The XC9110 series, Tr. Built-in type, uses the Lx pin and the XC9111 series, external Tr. Type, uses the EXT pin. The XC9110 series' duty ratio is 75% and oscillation frequency (FOSC) is 100kHz. The duty ratio of the XC9111 series automatically varies between 56% (oscillation frequency 180kHz) and 75% (oscillation frequency (FOSC) 100kHz). The VLx limit function only applies to the XC9110/9111 C versions. * The duty ratio depends on power supply. Please refer to the electrical characteristics on duty against output voltage you use.
4/35
XC9110/XC9111 Series
BLOCK DIAGRAMS
XC9111 E and F series
Note: The XC9110 series, Tr. Built-in type, uses the Lx pin and the XC9111 series, external Tr. Type, uses the EXT pin. The XC9110 / 9111 series E and F series have the VDD pin. The XC9110 series' duty ratio is 75% and oscillation frequency (FOSC) is 100kHz. The duty ratio of the XC9111 series automatically varies between 56% (oscillation frequency 180kHz) and 75% (oscillation frequency (FOSC) 100kHz). The VLx limit function only applies to the XC9110/9111 C versions. * The duty ratio depends on power supply. Please refer to the electrical characteristics on duty against output voltage you use.
ABSOLUTE MAXIMUM RATINGS
Ta = 25 PARAMETER VOUT Input Voltage Lx Pin Voltage Lx Pin Current EXT Pin Voltage EXT Pin Current CE Input Voltage VDD Input Voltage SOT-23, 25 Power Dissipation SOT-89 USP-6C Operating Temperature Range Storage Temperature Range Topr Pd SYMBOL VOUT VLx ILx VEXT IEXT VCE VDD RATINGS - 0.3 ~ 12.0 - 0.3 ~ 12.0 400 VSS - 0.3 ~ VOUT0.3 100 - 0.3 ~ 12.0 - 0.3 ~ 12.0 250 500 100 - 40 ~ + 85 Tstg - 55 ~ +125 * Define as VSS with a standard of all the voltage. mW UNITS V V mA V mA V V
5/35
XC9110/XC9111 Series
ELECTRICAL CHARACTERISTICS
XC9111Axx1MR
PARAMETER Output Voltage Output Voltage Temperature Characteristics Maximum Input Voltage Operating Start Voltage Oscillation Start Voltage Operating Hold Voltage Input Current at No Load Supply Current 1 (*2) Supply Current 2 Lx Switch ON Resistance Lx Leak Current Duty Ratio Duty Ratio 2 Maximum Oscillation Frequency Maximum Oscillation Frequency 2 Lx Limit Voltage (*4) Efficiency (*5) SYMBOL VOUT VOUT VOUTtopr VIN VST1 VST2 VHLD IIN IDD1 IDD2 RSWON ILxL DTY DTY2 MAXFOSC MAXFOSC2 VLxLMT EFFI IOUT=1mA, Connected to external components Applied 0.8V to VOUT, Vpull=1.0V IOUT=1mA, Connected to external components IOUT=0mA (*1) Applied (output voltagex0.95) to VOUT Applied (output voltage+0.5) to VOUT Same as IDD1, VLx=0.4V (*3) Same as IDD2, VLx7V Same as IDD1, measure Lx waveform IOUT=1mA, measure Lx ON time. Connect to external components Same as IDD1 Same as IDD1 Same as IDD1, VLx when max. oscillation frequency is more than double Connect to external components CONDITIONS Connected to external components Connected to external components - 40Topr85 MIN. x0.975 10 0.7 E7-1(*) 48 85 153 0.7 TYP. VOUT 100 0.8 E1-1(*) E2-1(*) E3-1(*) E4-1(*) E7-2(*) 56 100 180 E8(*) MAX. x1.025 0.9 0.8 E1-2(*) E2-2(*) E3-2(*) E4-2(*) 1 E7-3(*) 64 115 207 1.1 UNIT V ppm/ V V V V A A A A % % kHz kHz V % Ta = 25 CIRCUIT
Test condition : Unless otherwise specified, VIN=VOUTx0.6, IOUT=, Vpull=5.0V NOTE: *1: TOREX SBD, XB01SB04A2BR is used, reverse current IR < 1A (when reverse voltage VR = 10V is applied), in case of using selected parts. *2: Supply Current 1 is the value when the IC is constantly switching. input power supply (VIN). *3: Lx switch ON resistance can be calculated by (VLx x Rp) / (Vpull - VLx). *4: The Lx limit voltage function becomes stable when VOUT is over 2.0V. *5: EFFI={[output voltage]x(output current)} / [(input voltage)x(input current)]x100 *6: Please be aware of the absolute maximum ratings of the external components. (*): Please refer to the charts. * Change Vpull so that VLx will become 0.4V. In actual operation, the oscillator periodically switches, resulting in lower power consumption. Please refer to Input Current (IIN) under no load condition for the actual current, which is supplied from the
6/35
XC9110/XC9111 Series
ELECTRICAL CHARACTERISTICS (Continued)
XC9111Bxx1MR
PARAMETER Output Voltage Output Voltage Temperature Characteristics Maximum Input Voltage Operating Start Voltage Oscillation Start Voltage Operation Hold Voltage Supply Current 1 (*1) Supply Current 2 EXT `H' ON Resistance EXT `L' ON Resistance Duty Ratio Duty Ratio 2 Maximum Oscillation Frequency Maximum Oscillation Frequency 2 Efficiency (*4) SYMBOL VOUT VOUT VOUTtopr VIN VST1 VST2 VHLD IDD1 IDD2 REXTH REXTL DTY DTY2 MAXFOSC MAXFOSC2 EFFI IOUT=1mA, Connected to external components Applied 0.8V to VOUT IOUT=1mA, Connected to external components Applied (output voltagex0.95) to VOUT Applied (output voltage+0.5) to VOUT Same as IDD1, VEXT=VOUT-0.4V (*2) Same as IDD1, VEXT=0.4V (*3) Same as IDD1, measure Lx waveform IOUT=1mA, measure Lx ON time. Connect to external components Same as IDD1 Same as IDD1 Connect to external components CONDITIONS Connected to external components Connected to external components - 40Topr85 MIN. x0.975 10 0.7 E7-1(*) 48 85 153 TYP. VOUT 100 0.8 E2-1(*) E3-1(*) E5-1(*) E6-1(*) E7-2(*) 56 100 180 E9(*) MAX. x1.025 0.9 0.8 E2-2(*) E3-2(*) E5-2(*) E6-2(*) E7-3(*) 64 115 207 UNIT V ppm/ V V V V A A % % kHz kHz % Ta = 25 CIRCUIT
Test condition : Unless otherwise specified, VIN=VOUTx0.6, IOUT= NOTE: *1: Supply Current 1 is the value when the IC is constantly switching. lower power consumption. *2: EXT `H' ON resistance can be calculated by (0.4 x Rp) / ( VEXT - Vpull). *3: EXT `L' ON resistance can be calculated by (VEXT x Rp) / ( Vpull- VEXT). * Change Vpull so that VEXT will become VOUT-0.4V. * Change Vpull so that VEXT will become 0.4V. In actual operation, the oscillator periodically switches, resulting in
*4: EFFI={[output voltage]x(output current)} / [(input voltage)x(input current)]x100 *5: Please be aware of the absolute maximum ratings of the external components. (*): Please refer to the charts.
7/35
XC9110/XC9111 Series
ELECTRICAL CHARACTERISTICS (Continued)
XC9110Cxx1MR, XC9111Cxx1MR
PARAMETER Output Voltage Output Voltage Temperature Characteristics Maximum Input Voltage Operation Start Voltage Oscillation Start Voltage Operation Hold Voltage Input Current Supply Current 1 (*2) Supply Current 2 Lx Switch ON Resistance Lx Leak Current Duty Ratio Duty Ratio 2 Maximum Oscillation Frequency Maximum Oscillation Frequency 2 Stand-by Current CE "High" Voltage CE "Low" Voltage CE "High" Current CE "Low" Current Lx Limit Voltage (*4) Efficiency (*5) SYMBOL VOUT VOUT
VOUTtopr
Ta = 25 CONDITIONS Connect to external components Connect to external components - 40Topr85 IOUT=1mA, connect to external components Applied 0.8V to VOUT, Vpull=1.0V IOUT=1mA, connect to external components IOUT=0mA (*1) Applied (output voltagex0.95) to VOUT Applied (output voltage0.5V) to VOUT Same as IDD1, VLx=0.4V (*3) Same as IDD2, VLx=7V Same as IDD1, measure Lx waveform IOUT=1mA, measure Lx ON time (XC9111 only) Connect to external components Same as IDD1 Same as IDD1 (XC9111 only) Same as IDD1, VCE=0V Same as IDD1, determine Lx oscillation Same as IDD1, determine Lx shut-down Same as IDD1, VCE=VOUTx0.95 Same as IDD1, VCE=0V Same as IDD1, when max. oscillation frequency is more than double. Connect to external components MIN. x0.975 10 0.7 E7-1(*) 48 85 153 0.75 0.7 TYP. VOUT 100 0.8 E1-1(*) E2-1(*) E3-1(*) E4-1(*) E7-2(*) 56 100 180 E8(*) MAX. x1.025 0.9 0.8 E1-2(*) E2-2(*) E3-2(*) E4-2(*) 1 E7-3(*) 64 115 207 0.50 0.20 0.25 -0.25 1.1 UNIT V ppm/ V V V V A A A A % % kHz kHz A V V A A V % CIRCUIT
VIN VST1 VST2 VHLD IIN IDD1 IDD2 RSWON ILxL DTY DTY2 MAXFOSC MAXFOSC2 ISTB VCEH VCEL ICEH ICEL VLxLMT EFFI
Test condition : Unless otherwise specified, connect CE to VOUT, VIN=VOUTx0.6, IOUT=, Vpull=5.0V NOTE: *1: TOREX SD, XB01SB04A2BR is used, reverse current IR < 1A (when reverse voltage VR = 10V is applied), in case of using selected parts. *2: Supply Current 1 is the value when the IC is constantly switching. input power supply (VIN). *3: Lx switch ON resistance can be calculated by (VLx x Rp) / (Vpull - VLx). * Change Vpull so that VLx will become 0.4V. *4: The Lx. limit voltage function becomes stable when VOUT of the XC9110/9111 series is over 2.0V. *5: EFFI={[output voltage]x(output current)} / [(input voltage)x(input current)]x100 *6: Please be aware of the absolute maximum ratings of the external components. (*): Please refer to the charts. In actual operation, the oscillator periodically switches, resulting in lower power consumption. Please refer to Input Current (IIN) under no load condition for the actual current, which is supplied from the
8/35
XC9110/XC9111 Series
ELECTRICAL CHARACTERISTICS (Continued
XC9110Dxx1MR, XC9111Dxx1MR
PARAMETER Output Voltage Output Voltage Temperature Characteristics Maximum Input Voltage Operation Start Voltage Oscillation Start Voltage Operation Hold Voltage Supply Current 1 (*1) Supply Current 2 EXT H ON Resistance EXT L ON Resistance Duty Ratio Duty Ratio 2 Maximum Oscillation Maximum Oscillation Standby Current CE "High" Voltage CE "Low" Voltage CE "High" Current CE "Low" Current Efficiency (*4) SYMBOL VOUT VOUT
VOUTtopr
Ta = 25 CONDITIONS Connect to external components Connect to external components - 40Topr85 IOUT=1mA, connect to external components Applied 0.8V to VOUT IOUT=1mA, connect to external components Applied (output voltagex0.95) to VOUT Applied (output voltage0.5V) to VOUT Same as IDD1, VEXT=VOUT-0.4(*2) Same as IDD1, VEXT=0.4V(*3) Same as IDD1, measure Lx waveform IOUT=1mA, measure Lx ON time (XC9111 only) Connect to external components Same as IDD1 Same as IDD1 (XC9111 only) Same as IDD1, VCE=0V Same as IDD1, determine Lx oscillation Same as IDD1, determine Lx shut-down Same as IDD1, VCE=VOUTx0.95 Same as IDD1, VCE=0V Connect to external components MIN. x0.975 10 0.7 E7-1(*) 48 85 153 0.75 TYP. VOUT 100 0.8 E2-1(*) E3-1(*) E5-1(*) E6-1(*) E7-2(*) 56 100 180 E8(*) MAX. x1.025 0.9 0.8 E2-2(*) E3-2(*) E5-2(*) E6-2(*) E7-3(*) 64 115 207 0.50 0.20 0.25 -0.25 UNIT V ppm/ V V V V A A % % kHz kHz A V V A A % CIRCUIT
VIN VST1 VST2 VHLD IDD1 IDD2 REXTH REXTL DTY DTY2 MAXFOSC MAXFOSC ISTB VCEH VCEL ICEH ICEL EFFI
Test condition : Unless otherwise specified, connect CE to VOUT, VIN=VOUTx0.6, IOUT= NOTE: *1: "Supply Current 1" is the value when the IC is constantly switching. In actual operation, the oscillator periodically switches, resulting in lower power consumption. *2: EXT H ON resistance can be calculated by (0.4 x Rp) / (VEXT - Vpull). *3: EXT L ON resistance can be calculated by (VEXT x Rp) / (Vpull - VEXT). * Change Vpull so that VEXT will become VOUT-0.4V. * Change Vpull so that VEXT will become 0.4V.
*4: EFFI={[output voltage]x(output current)} / [(input voltage)x(input current)]x100 *5: Please be aware of the absolute maximum ratings of the external components. (*): Please refer to the charts.
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XC9110/XC9111 Series
ELECTRICAL CHARACTERISTICS (Continued)
XC9110Exx1MR, XC9111Exx1MR
PARAMETER Output Voltage Output Voltage Temperature Characteristics Maximum Input Voltage Operation Start Voltage Oscillation Start Voltage Operation Hold Voltage Input Current Supply Current 1 (*2) Supply Current 2 Lx Switch ON Resistance Lx Leak Current Duty Ratio Duty Ratio 2 Maximum Oscillation Maximum Oscillation Lx Limit Voltage (*4) Efficiency (*5) SYMBOL VOUT VOUT
VOUTtopr
Ta = 25 CONDITIONS Connect to external components Connect to external components - 40Topr85 IOUT=1mA, connect to external components Applied 0.8V to VOUT, Vpull=1.0V IOUT=1mA, connect to external components MIN. x0.975 10 0.7 E7-1(*) 48 85 153 0.7 TYP. VOUT 100 0.8 E1-1(*) E2-1(*) E3-1(*) E4-1(*) E7-2(*) 56 100 180 E8(*) MAX. x1.025 0.9 0.8 E1-2(*) E2-2(*) E3-2(*) E4-2(*) 1 E7-3(*) 64 115 207 1.1 UNIT V ppm/ V V V V A A A A % % kHz kHz V % CIRCUIT
VIN VST1 VST2 VHLD IIN IDD1 IDD2 RSWON ILxL DTY
IOUT=0mA (*1) Applied (output voltagex0.95) to VOUT Applied (output voltage0.5V) to VOUT Same as IDD1, VLx=0.4V (*3) Same as IDD2, VLx=7V Same as IDD1, measure Lx waveform IOUT=1mA, measure Lx ON time (XC9111 DTY2 only) Connect to external components MAXFOSC Same as IDD1 MAXFOSC2 Same as IDD1 (XC9111 only) Same as IDD1, VLx when max. oscillation VLxLMT frequency is more than double. EFFI Connect to external components
Test condition : Unless otherwise specified, connect VDD to VOUT, VIN=VOUTx0.6, IOUT=, Vpull=5.0V NOTE: *1: TOREX SD, XB01SB04A2BR is used; reverse current IR < 1A (when reverse voltage VR = 10V is applied), in case of using selected parts. *2: "Supply Current 1" is the value when the IC is constantly switching. in lower power consumption. from the input power supply (VIN). *3: Lx switch ON resistance can be calculated by (VLx x Rp) / (Vpull - VLx). * Change Vpull so that VLx will become 0.4V. *4: The Lx limit voltage function becomes stable when VOUT of the XC9110/9111 series is over 2.0V. *5: EFFI={[output voltage]x(output current)} / [(input voltage)x(input current)]x100 *6: When using VDD and VOUT separately, please set the voltage range of VDD from 1.5V to 10V. The IC operates from VDD=0.8V, but output voltage and oscillation frequency will be stable when VDD=1.5V or more. *7: Please be aware of the absolute maximum ratings of the external components. (*): Please refer to the charts. In actual operation, the oscillator periodically switches, resulting Please refer to Input Current (IIN) under no load condition for the actual current, which is supplied
10/35
XC9110/XC9111 Series
ELECTRICAL CHARACTERISTICS (Continued)
XC9110Fxx1MR, XC9111Fxx1MR
PARAMETER Output Voltage Output Voltage Temperature Characteristics Maximum Input Voltage Operation Start Voltage Oscillation Start Voltage Operation Hold Voltage Supply Current 1 (*1) Supply Current 2 EXT H ON Resistance EXT L ON Resistance Duty Ratio Duty Ratio 2 Maximum Oscillation Maximum Oscillation Efficiency (*4) SYMBOL VOUT VOUT VOUT topr VIN VST1 VST2 VHLD IDD1 IDD2 REXTH REXTL DTY DTY2 MAXFOSC MAXFOSC EFFI CONDITIONS Connect to external components Connect to external components - 40Topr85 IOUT=1mA, connect to external components Applied 0.8V to VOUT IOUT=1mA, connect to external components Applied (output voltagex0.95) to VOUT Applied (output voltage0.5V) to VOUT Same as IDD1, VEXT=VOUT=-0.4V (*2) Same as IDD1, VEXT=0.4V (*3) Same as IDD1, measure Lx waveform IOUT=1mA, measure Lx ON time (XC9111 only) Connect to external Same as IDD1 Same as IDD1 (XC9111 only) Connect to external components MIN. x0.975 10 0.7 E7-1(*) 48 85 153 TYP. VOUT 100 0.8 E2-1(*) E3-1(*) E5-1(*) E6-1(*) E7-2(*) 56 100 180 E9(*) MAX. x1.025 0.9 0.8 E2-2(*) E3-2(*) E5-2(*) E6-2(*) E7-3(*) 64 115 207 UNIT V ppm/ V V V V A A % % kHz kHz % Ta = 25 CIRCUIT
Test condition : Unless otherwise specified, connect VDD to VOUT, VIN=VOUTx0.6, IOUT= NOTE: *1: "Supply Current 1" is the value when the IC is constantly switching. in lower power consumption. *2: EXT H ON resistance can be calculated by (0.4 x Rp) / (VEXT - Vpull). *3: EXT L ON resistance can be calculated by (VEXT x Rp) / (Vpull - VEXT). * Change Vpull so that VEXT will become VOUT-0.4V. * Change Vpull so that VEXT will become 0.4V. In actual operation, the oscillator periodically switches, resulting
*4: EFFI={[output voltage]x(output current)} / [(input voltage)x(input current)]x100 *5: When using VDD and VOUT separately, please set the voltage range of VDD from 1.5V to 10V. The IC operates from VDD=0.8V, but output voltage and oscillation frequency will be stable when VDD=1.5V or more. *6: Please be aware of the absolute maximum ratings of the external components. (*): Please refer to the charts.
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XC9110/XC9111 Series
ELECTRICAL CHARACTERSTICS (Continued)
IDD2, REXTH, REXTL, DTY Chart
SYMBOL PARAMETER UNIT SETTING VOLTAGE 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 E2-1 E2-2 E1-1 E1-2 Input Current (No Load) (A) IIN TYP. MAX. E3-1 E3-2 E4-1 E4-2 Lx Switch ON Resistance () RSWON TYP. MAX. 4.2 3.5 6.3 5.3 E5-1 E5-2 EXT H ON Resistance () REXTH TYP. MAX. 160 108 240 162 E6-1 E6-2 EXT L ON Resistance () REXTL TYP. MAX. 67 52 101 78
Supply Current 1 (A) IDD1 TYP. MAX. 7.7 15.1 8.0 15.6 8.3 16.2 8.6 16.8 8.9 17.5 9.3 18.2 9.7 18.9 10.1 19.7 10.5 20.6 11.0 21.5 11.5 22.5 12.0 23.5 12.5 24.5 13.1 25.6 13.7 26.8 14.3 28.0 15.0 29.3 15.7 30.6 16.4 31.9 17.1 33.3 17.8 34.8 18.6 36.3 19.4 37.9 20.3 39.5 21.1 41.1 22.0 42.8 22.9 44.5 23.8 46.3 24.8 48.2 25.7 50.0 26.7 52.0 27.7 53.9 28.8 56.0 29.8 58.0 30.9 60.1 31.7 63.4 32.3 64.7 32.9 65.9 33.5 67.1 34.1 68.3 34.7 69.5 35.3 70.7 36.0 72.0 36.5 73.1 37.1 74.3 37.7 75.5 38.4 76.8 38.9 77.9 39.5 79.1 40.2 80.4 40.8 81.6 41.3 82.7 42.0 84.0 42.6 85.2 43.2 86.4 43.7 87.5
Supply Current 2 (A) IDD2 TYP. MAX. 3.5 3.9
4.3
8.6
1.9
4.4 4.5
8.8 2.0 9.1
4.0 3.2 4.1 4.8 91 137 45 68
4.6
9.3 2.1
4.2
2.8
4.2
70
105
38
57
4.7 4.8
9.5 9.7 2.2
4.3 4.4
5.0
10.0
4.5
5.1 5.2
10.2 2.3 10.4
4.6 4.7
2.5
3.8
59
89
33
50
5.3
10.6 2.4
4.8
5.4 5.5
10.8 11.1 2.5
4.9 5.0
5.6
11.3
5.1 2.1 3.2 40 60 24 36
5.7 5.8
11.5 2.6 11.7
5.2 5.3
6.0
12.0
2.7
5.4
12/35
XC9110/XC9111 Series
ELECTRICAL CHARACTERSTICS (Continued)
IOUT, DTY, EFFI Chart
SYMBOL PARAMETER UNIT SETTING VOLTAGE 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 C1 OUTPUT CURRENT (mA) IOUT 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 30.0 31.0 32.0 33.0 34.0 35.0 36.0 37.0 38.0 39.0 40.0 41.0 42.0 43.0 44.0 45.0 46.0 47.0 48.0 49.0 50.0 51.0 52.0 53.0 54.0 55.0 56.0 57.0 58.0 59.0 60.0 61.0 62.0 63.0 64.0 65.0 66.0 67.0 68.0 69.0 70.0 E7-1 E7-2 DUTY RATIO (%) DTY TYP. E7-3 XC9110 E8 EFFICIENCY XC9111 XC9110 (%) EFFI TYP. 75 60 E9 XC9111
MIN.
MAX. 60
75
65
79
61
75
70
75
80 77 82 77 82
80
86
80
83
82 68 73 78
88
82
85
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XC9110/XC9111 Series
TYPICAL APPLICATION CIRCUITS
A type circuit B type circuit
L: 100H SD: XB01SB04A2BR CL: 16V, 47F CIN: 16V, 47F
(Coil, CR54, SUMIDA) (Schottky type, TOREX) (Tantalum) (Tantalum)
L: 47H (Coil, CR54, SUMIDA) SD: XB01SB04A2BR (Schottky type, TOREX) CL: 16V, 47F (Tantalum) CIN: 16V, 47F (Tantalum) RB: 500 CB: 2200pF Tr: 2SD1628
C type circuit
D type circuit
L: SD: CL: CIN:
100H XB01SB04A2BR 16V, 47F 16V, 47F
(Coil, CR54,SUMIDA) (Schottky type, TOREX) (Tantalum) (Tantalum)
L: 47H SD: XB01SB04A2BR CL: 16V, 47F CIN: 16V, 47F RB: 500 CB: 2200pF Tr: 2SD1628
(Coil, CR54,SUMIDA) (Schottky type, TOREX) (Tantalum) (Tantalum) (SANYO)
E type circuit
F type circuit
L: SD: CL: CIN:
100H XB01SB04A2BR 16V, 47F 16V, 47F
(Coil, CR54,SUMIDA) (Schottky type, TOREX) (Tantalum) (Tantalum)
L: 47H SD: XB01SB04A2BR CL: 16V, 47F CIN: 16V, 47F RB: 1k CB: 3300pF Tr: 2SD1628
(Coil, CR54,SUMIDA) (Schottky type, TOREX) (Tantalum) (Tantalum) (SANYO)
14/35
XC9110/XC9111 Series
OPERATIONAL EXPLANATION
The XC9110/9111 series are PFM controlled step-up DC/DC converter (A, C and E types) / controller ICs (B, D and F types), which contain voltage reference source, PFM comparator, duty selector, PFM controlled OSC, VLx Limiter, driver transistor and so on. With the XC9110 series, maximum duty ratio is set to 75% (maximum oscillation frequency=MAXFOSC: 100kHz) making it suitable for use with large current operations. The XC9111 series automatically switches duty ratio between 56% (MAXFOSC: 180kHz) and 75% (MAXFOSC: 100kHz) when it senses changes in load and can support both large and small currents. The reference voltage source provides the reference voltage to ensure stable output voltage of the DC/DC converter. < PFM Comparator > The PFM comparator compares the feedback voltage divided by the internal split resistors with the internal reference voltage. When the feedback voltage is higher than the reference voltage, PFM controlled OSC will be stopped. When the feedback voltage is lower than the reference voltage, the PFM controlled OSC will be operated so that the output voltage will be stable by sending a signal to the buffer drive circuit and controlling the internal or external driver transistor. < Duty Selector > With the XC9111 series, the duty selector automatically switches duty ratio between 56% and 75% when it senses changes in load and can support both large and small currents. < PFM Controlled Oscillator > The PFM controlled OSC determines maximum oscillation frequency. 100kHz at 75% duty and 180kHz at 56%.
The circuit generates the oscillation frequency of
< VLx Limiter> The VLx circuit of the XC9110/9111 A, C and D types detects in-rush current and overcurrent, which flows from the VOUT pin to the Lx pin during short-circuit. In overcurrent, the driver transistor will be OFF. When the overcurrent state is eliminated, the IC resumes its normal operation. The chip enable function of the XC9110/9111 C and D types enables the IC to be in shut down mode when a low level signal is input to the CE pin. During the shut down mode, the current consumption will be reduced to 0.5A (MAX.). With the separated VDD pin, the XC9110/9111 E and F types can be operated in both low and high voltage.
15/35
XC9110/XC9111 Series
EXTERNAL COMPONENTS
Tr.: *Using a MOSFET XP151A13A0MR (N-ch Power MOSFET, TOREX) Note : VGS breakdown voltage of this Transistor is 8V so please be careful with the power supply voltage. If the power supply voltage is over 6V, Please use the XP151A12A2MR with a VGS breakdown voltage of 12V. * Using a NPN Transistor 2SD1628 (SANYO) RB: 500 (Adjust in accordance with load and Tr's hFE.) CB: 2200pF (Ceramic) CB 1 / ( 2TT x RB x FOSC x 0.7 )
RB value example (when using NPN Transistor)
VOUT (V) 1.8 1.8 1.8 1.8 1.8 1.8
* Tr.: 2SD1628
IOUT (mA) 10 10 30 30 50 50
VIN (V) 1.2 1.5 1.2 1.5 1.2 1.5
RB () 4.5 6.0 2.0 2.0 1.2 1.5
VOUT (V) 3.3 3.3 3.3 3.3 3.3 3.3
IOUT (mA) 5 5 10 10 30 30
VIN (V) 1.2 1.5 1.2 1.5 1.2 1.5
RB () 6.5 6.5 5.0 4.5 3.5 3.5
SD: XP01SB04A2BR (TOREX) MA2Q735 (MATSUSHITA) (Tantalum type, KYOCERA TAJ) CL: 16V, 47F CIN: 16V, 47F (Tantalum type, KYOCERA TAJ) 16V, 220F (Electrolytic Capacitor) L: 100H (CR54,SUMIDA) 100H (CDRH6D28,SUMIDA)
22H, 47H (CR54, SUMIDA)
NOTES ON USE
1. Please do not exceed the value of stated absolute maximum ratings. 2. The DC/DC converter / controller IC's performance is greatly influenced by not only the ICs' characteristics, but also by those of the external components. Care must be taken when selecting the external components. 3. The Lx limit voltage function becomes stable when VOUT of the XC9110/9111C series is over 2.0V and the VDD of the XC9110/9111E series is over 2.0V. 4. Make sure that the PCB GND traces are as thick as possible, as variations in ground potential caused by high ground currents at the time of switching may result in instability of the IC. 5. Please mount each external component as close to the IC as possible and use thick, short connecting traces to reduce the circuit impedance.
16/35
XC9110/XC9111 Series
TEST CIRCUITS
Circuit Circuit
Circuit
Circuit
Circuit
Circuit
Circuit
Circuit

Circuit CIN: 47F, 16V L: CR54, 100H SD: XB01SB04A2BR CL: 47F, 16V Circuit Rp: 300 Rp: 10 Rp: 200 Cp: 100F Circuit Cp: 100F
(Tantalum) (SUMIDA) (Schottky, TOREX) (Tantalum)
(OS-CON, SANYO)
(For Lx ON Resistance and measuring Lx Limit Current)
(For measuring EXT ON Resistance)
(OS-CON, SANYO)
Circuit (Tantalum) CIN: 47F, 16V L: CR54, 100H (SUMIDA) Tr: 2SD1628 (SANYO) CB: 2200pF RB: 500 SD: XB01SB04A2BR (Schottky, TOREX) (Tantalum) CL: 47F, 16V
17/35
XC9110/XC9111 Series
TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current *Topr = 25
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XC9110/XC9111 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(1) Output Voltage vs. Output Current (Continued) *Topr = 25
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XC9110/XC9111 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current *Topr = 25
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XC9110/XC9111 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Efficiency vs. Output Current (Continued) *Topr = 25
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XC9110/XC9111 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current *Topr = 25
22/35
XC9110/XC9111 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Ripple Voltage vs. Output Current (Continued) *Topr = 25
23/35
XC9110/XC9111 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
*Topr = 25 (4) Supply Current 1 vs. Output Voltage (5) Supply Current 2 vs. Output Voltage
(6) Stand-by Current vs. Output Voltage
(7) No Load Input Current vs. Output Voltage
(8) Lx Limit Voltage vs. Output Voltage
(9) Lx Switch-ON Resistance vs. Output Voltage
* The reason for the increase in the "no load input current" figure at Ta=85 in the performance characteristics is because of an increase in the reverse current of the Schottky diode and not because of abnormalities of the IC itself.
24/35
XC9110/XC9111 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(10) EXT H ON Resistance vs. Output Voltage
*Topr = 25
(11) EXT L ON Resistance vs. Output Voltage
(12) Maximum Oscillation Frequency 1. vs. Output Voltage
(13) Maximum Oscillation Frequency 2 vs. Output Voltage
(14) Duty Ratio 1 vs. Output Voltage
(15) Duty Ratio 2 vs. Output Voltage
25/35
XC9110/XC9111 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(16) Output Voltage vs. Ambient Temperature (17) CE "H", "L" Voltage vs. Output Voltage *Topr = 25
(18) Operation Start Voltage vs. Ambient Temperature
(19) Oscillation Start Voltage vs. Ambient Temperature
(20) Operation Hold Voltage vs. Ambient Temperature
26/35
XC9110/XC9111 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(21) Load Transient Response
VIN=2.4V, VDD=VOUT, IOUT=0.1mA 50mA
*Topr = 25
27/35
XC9110/XC9111 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(22) Input Transient Response *Topr = 25
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XC9110/XC9111 Series
PACKAGING INFORMATION
SOT-23 SOT-25 (SOT-23-5)
SOT-89
USP-6C
29/35
XC9110/XC9111 Series
PACKAGING INFORMATION (Continued)
USP-6C Recommended Pattern Layout
USP-6C Recommended Metal Mask Design
30/35
XC9110/XC9111 Series
MARKING RULE
SOT-23
Represents product series MARK
5 6
FUNCTIONS -
Built-In Transistor External Transistor
PRODUCT SERIES XC9111Axxxxx XC9111Bxxxxx
Represents integer of output voltage and oscillation frequency OUTPUT VOLTAGE 1.x 2.x 3.x 4.x 5.x 6.x 7.x MARK FOSC=100kHz 1 2 3 4 5 6 7
OUTPUT VOLTAGE
x.0 x.1 x.2 x.3 x.4 x.5 x.6 x.7 x.8 x.9
MARK FOSC=100KHz
0 1 2 3 4 5 6 7 8 9
Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted)
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XC9110/XC9111 Series
MARKING RULE (Continued)
SOT-25
Represents product series MARK V X Y Z 5 6 7 8 FUNCTION CE CE VDD/VOUT VDD/VOUT CE CE VDD/VOUT VDD/VOUT Tr. Built-in External Tr. Tr. Built-in External Tr. Tr. Built-in External Tr. Tr. Built-in External Tr. PRODUCT SERIES XC9110Cxxxxx XC9110Dxxxxx XC9110Exxxxx XC9110Fxxxxx XC9111Cxxxxx XC9111Dxxxxx XC9111Exxxxx XC9111Fxxxxx
SOT-25 (TOP VIEW)
Represents integer of output voltage and oscillation frequency OUTPUT VOLTAGE 1.x 2.x 3.x 4.x 5.x 6.x 7.x MARK FOSC=100kHz 1 2 3 4 5 6 7
Represents decimal point of output voltage and oscillation frequency OUTPUT VOLTAGE x.0 x.1 x.2 x.3 x.4 x.5 x.6 x.7 x.8 x.9 Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted) MARK FOSC=100kHz 0 1 2 3 4 5 6 7 8 9
32/35
XC9110/XC9111 Series
MARKING RULE (Continued)
SOT-89
Represents product series MARK
5 6
-
FUNCTIONS Built-In Transistor External Transistor
PRODUCT SERIES XC9111Axxxxx XC9111Bxxxxx
Represents integer of output voltage and oscillation frequency OUTPUT VOLTAGE 1.x 2.x 3.x 4.x 5.x 6.x 7.x MARK FOSC 100kHz 1 2 3 4 5 6 7
Represents decimal point of output voltage and oscillation frequency OUTPUT VOLTAGE x.0 x.1 x.2 x.3 x.4 x.5 x.6 x.7 x.8 x.9 Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted) MARK FOSC 100kHz 0 1 2 3 4 5 6 7 8 9
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XC9110/XC9111 Series
MARKING RULE (Continued)
USP-6C
Represents product series MARK M N Represents series type
USP-6C (TOP VIEW)
PRODUCT SERIES XC9110xxx1Dx XC9111xxx1Dx
MARK C D E F
FUNCTION CE CE VDD/VOUT VDD/VOUT Tr. Built-in External Tr. Tr. Built-in External Tr.
PRODUCT SERIES XC911xCxx1Dx XC911xDxx1Dx XC911xExx1Dx XC911xFxx1Dx
Represents integer of output voltage MARK 1 2 3 4 5 6 7 Represents decimal point of output voltage MARK 0 1 2 3 4 5 6 7 8 9 Represents oscillation frequency MARK 1 OSCILLATION FREQUENCY x.0 PRODUCT SERIES XC911xxxx1Dx OUTPUT VOLTAGE x.0 x.1 x.2 x.3 x.4 x.5 x.6 x.7 x.8 x.9 OUTPUT VOLTAGE 1.x 2.x 3.x 4.x 5.x 6.x 7.x
Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted) * No character inversion used
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XC9110/XC9111 Series
1. The products and product specifications contained herein are subject to change without notice to improve performance characteristics. Consult us, or our representatives before use, to confirm that the information in this catalog is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this catalog. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog. 4. The products in this catalog are not developed, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transport; combustion and associated safety equipment thereof.) 5. Please use the products listed in this catalog within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd.
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