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Preliminary
Bi-polar transistors LDD Output Voltage (1.8V, 2.5V, 3.3V, 5.0V, ADJ) Output Voltage Accuracy :1% Output Current :Up to 1A
APPLICATIONS
Highly efficient linear regulator 5V ~ 3V DC / DC converter Battery charger Local power supply inside equipment Battery powered equipment
GENERAL DESCRIPTION
The XB1117 series is a 1A low dropout positive voltage regulator. Output voltage of the XB1117P series is fixed to 1.8V, 2.5V, 3.3V, and 5.0V. The XB1117K series' output voltage is adjustable by the external resistors. Please refer to the absolute maximum ratings for the difference between the rated input voltage of the XB1117P50 (VOUT=5.0V) and the XB1117P18 / 25 / 30 (VOUT=1.8V, 2.5V and 3.0V) and XB1117K type. With the dropout voltage 1.2V (TYP.), output current can be generated up to 1A. The built-in overcurrent circuit and thermal protection circuit start to operate when either one of output put current reaches the current limit level or junction temperature reaches the temperature limit. The XB1117 series provide stable line and load regulation by using an input capacitor (10F, tantalum) and an output capacitor. Package is available in SOT-223.
FEATURES
Low Dropout Voltage Line Regulation (TYP.) Load Regulation (TYP.) : 1.2V @ IOUT = 1A : 0.04% (ADJ) : 0.1% (ADJ) Adjustable or Fixed Voltages : 1.8V, 2.5V, 3.3V, 5.0V (ADJ)
Adjust pin current less than 120A (ADJ) Overcurrent protection circuit built-in Thermal protection circuit built-in Package : SOT-223
TYPICAL APPLICATION CIRCUIT
TYPICAL PERFORMANCE CHARACTERISTICS
3
XB1117 Series
PIN CONFIGURATION PIN ASSIGNMENT
PIN 1 2 3 PIN NAME ADJ/GND VOUT VIN FUNCTION ADJ/Ground Output Power Input
SOT-223 TOP VIEW
PRODUCT CLASSIFICATION
Ordering Information
XB1117 DESIGNATOR DESCRIPTION Type of Regulator K 181 251 Output Voltage & Accuracy 331 501 12B Package F R Device Orientation L : Embossed tape, Reverse feed : Adjustable VOUT type : Fixed VOUT 1.80V (1%) : Fixed VOUT 2.50V (1%) : Fixed VOUT 3.30V (1%) : Fixed VOUT 5.00V (1%) : Adjustable VOUT 1.25V (1%) : SOT-223 : Embossed tape, Standard feed SYMBOL P DESCRIPTION : Fixed VOUT type
4
XB1117
Series
PACKAGING INFORMATION
SOT-223
BLOCK DIAGRAM
5
XB1117 Series
ABSOLUTE MAXIMUM RATINGS
XB1117P50
PARAMETER Input Voltage Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Power Dissipation (T=100) Operating Temperature Range Operating Junction Temperature Range Storage Temperature Range Lead Temperature SYMBOL VIN JC JA PD TOPR TJ TSTG TLEAD RATINGS 10.0 15 /W 160 625 0 ~70 0 ~125 -65 ~150 260 mW UNITS V
*Stress above the listed absolute maximum rating may cause permanent damage to the device. ** Please note that the difference between the rated input voltage of the XB1117P50 (VOUT=5.0V) and the XB1117P18 / 25 / 30 (VOUT=1.8V, 2.5V and 3.0V) and XB1117K type.
ELECTRICAL CHARACTERISTICS
XB1117P501
PARAMETER Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Supply Current Temperature Coefficient Temperature Stability SYMBOL VOUT CONDITIONS *Over Temp. *Over Temp. *Over Temp. *Over Temp. *Over Temp. *Over Temp. STANDARD VALUE MIN. TYP. MAX. 4.950 5.000 5.050 4.900 5.000 5.100 1.0 *Over Temp. 1 5.0 10.1 1.2 1.3 1.5 6 50 0.5 6 15.2 20.2 1.4 13 mV
Ta=25
UNITS V
VIN=7.0V IOUT=0A 7.0VVIN9.0V VOUT1 IOUT=0A VIN=7.0V VOUT2 0AIOUT1.0A VOUT=1 Vdif 0AIOUT1.0A Ilim 7.0VVIN10.0V VIN=7.0V ISS 0AIOUT1.0A 7.0VVIN10.0V TC 0AIOUT1.0A VIN=7.0V TS IOUT=100mA
V A mA ppm/
*Over Temp. = Over Temperature070
6
XB1117
Series
ABSOLUTE MAXIMUM RATINGSXB1117P18, P25, P33, K
PARAMETER Input Voltage Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Power Dissipation (T=100) Operating Temperature Range Operating Temperature Range Storage Temperature Range Lead Temperature SYMBOL VIN JC JA PD TOPR TJ TSTG TLEAD RATINGS 7.0 15 /W 160 625 0 ~ 70 0 ~ 125 -65 ~ 150 260 mW UNITS V
*Stress above the listed absolute maximum rating may cause permanent damage to the device.
ELECTRICAL CHARACTERISTICS
XB1117P181
PARAMETER Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Supply Current Temperature Coefficient Temperature Stability SYMBOL VOUT VOUT1 VOUT2 Vdif Ilim ISS TC TS VIN=5.0V IOUT=0A 4.75VVIN7.0V IOUT = 0A VIN=5.0V 0AIOUT1.0A VOUT=1 0AIOUT1.0A 4.75VVIN7.0V VIN=5.0V 0AIOUT1.0A 4.75VVIN7.0V 0AIOUT1.0A VIN=5.0V IOUT=100mA *Over Temp. *Over Temp. *Over Temp. *Over Temp. *Over Temp. *Over Temp. CONDITIONS STANDARD VALUE MIN. 1.782 1.764 1.0 TYP. 1.800 1.800 1.0 1.80 3.70 1.2 1.3 1.5 6 50 0.5 MAX. 1.818 1.836 6.8 18.2 22.0 1.4 13 TJ=25 UNITS V mV mV V A mA ppm/
*Over Temp. = Over Temperature070
XB1117P251
PARAMETER Output Voltage Line Regulation oad Regulation Dropout Voltage Current Limit Supply Current Temperature Coefficient Temperature Stability SYMBOL VOUT VOUT1 VOUT2 Vdif Ilim ISS TC TS VIN=5.0V IOUT=0A 4.75VVIN7.0V IOUT=0A VIN=5.0V 0AIOUT1.0A VOUT=1 0AIOUT1.0A 4.75VVIN7.0V VIN=5.0V 0AIOUT1.0A 4.75VVIN7.0V 0AIOUT1.0A VIN=5.0V IOUT=100mA *Over Temp. *Over Temp. *Over Temp. *Over Temp. *Over Temp. *Over Temp. CONDITIONS STANDARD VALUE MIN. 2.475 2.450 1.0 TYP. 2.500 2.500 1.0 2.5 5.1 1.2 1.3 1.5 6 50 0.5 MAX. 2.525 2.550 6.8 25.3 30.3 1.4 13 -
TJ =25 UNITS V mV mV V A mA ppm/
*Over Temp. = Over Temperature070
7
XB1117 Series
ELECTRICAL CHARACTERISTICS (Continued)
XB1117P331
PARAMETER Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Supply Current Temperature Coefficient Temperature Stability SYMBOL VOUT VOUT1 VOUT2 Vdif Ilim ISS TC TS VIN=5.0V IOUT=0A 4.75VVIN7.0V IOUT=0A VIN=5.0V 0AIOUT1.0V VOUT=1 0AIOUT1.0A 4.75VVIN7.0V VIN=5.0V 0AIOUT1.0A 4.75VVIN7.0V 0AIOUT1.0A VIN=5.0V IOUT=100mA *Over Temp. *Over Temp. *Over Temp. *Over Temp. *Over Temp. *Over Temp. CONDITIONS STANDARD VALUE MIN. 3.267 3.234 1.0 TYP. 3.300 3.300 1.0 3.4 6.7 1.2 1.3 1.5 6 50 0.5 MAX. 3.333 3.366 4.5 10.0 13.4 1.4 13 V A mA ppm/ mV TJ =25 UNITS V
*Over Temp. = Over Temperature070
XB1117K12B
PARAMETER Reference voltage Line Regulation Load Regulation Dropout Voltage Current Limit Temperature Coefficient Adjust Pin Current Adjust Pin Current Change Temperature Stability Minimum Load Current SYMBOL Vref VOUT1 VOUT2 Vdif Ilim TC IADJ IADJ TS IOUT VIN=5.0V IOUT=10mA 4.75VVIN7.0V IOUT=0A VIN=5.0V 10AIOUT1.0A VOUT=1 10AIOUT1.0A 2.75AVIN7.0V 2.75VVIN7.0V 10AIOUT1.0A 2.75VVIN7.0V 10AIOUT1.0A 2.75VVIN7.0V 10AIOUT1.0A VIN=5.0V IOUT=100A VOUT=5.0V *Over Temp. *Over Temp. *Over Temp. *Over Temp. *Over Temp. *Over Temp. *Over Temp. CONDITIONS STANDARD VALUE MIN. 1.238 1.225 1.0 TYP. 1.250 1.250 0.04 0.1 0.2 1.2 1.3 1.5 50 55 0.2 0.5 MAX. 1.262 1.275 0.20 0.3 0.4 1.4 120 5.0 10
Ta=25 UNITS V V A ppm/ A A mA
*Over Temp. = Over Temperature070
8
XB1117
Series
OPERATIONAL EXPLANATION
1. Output voltage adjustment The XB1117 series provides a stable output by comparing the output voltage to an internal reference voltage. With the adjustable XB1117K type, a 1.25V reference voltage (VREF) is set between the VOUT pin and the ADJ pin and the external resistors R1 and R2 are used to set the output voltage. The resistance values of R1 and R2 should be set so as to provide a minimum load current of 10mA. The output voltage is given by the following equation. VOUT=VREF(1+R2/R1)+IADJ x R2 The output voltage of the XB1117P type is internally fixed to 1.8V, 2.5V, 3.3V, and 5.0V so external resistors are not necessary.
2. Stability and load regulation The XB1117 series requires a load capacitor between the VOUT pin and the GND pin to provide phase compensation thereby ensuring stability of the output voltage. Either a tantalum capacitor of more than 10F (TYP.) or an aluminum electrolytic capacitor of more than 50F (TYP.) should be connected. (Note : The capacitor's ESR value should not exceed 0.5.) The output capacitor does not have a theoretical upper limit so increasing its value will increase stability. CL=100F or more is typical for high current regulator design. In order to avoid any reductions in output voltage accuracy with the XB1117K type, we recommend that you do not place a parasitic resistor (Rp) between the VOUT pin and the divider resistor R1. The parasitic resistor (Rp) does not influence the output however if the divider resistor R1 is directly connected to the VOUT pin. With the XB1117P type, although external resistor (R1) is internally connected to the VOUT pin, stability can be maintained by not wiring a parasitic resistor to the GND pin.
3. Thermal protection XB1117 series has themal protection which limits junction temperature to 150. However,device functionally is only guaranteed to a maximum junction temperture of + 125. The power disspation and junction temperture for XB1117 in DPAK package are given by PD=(VIN-VOUT)xIOUT TJUNCTION=T AMBIENT+PDxJA NOTET JUNCTION must not exceed 125.
9
XB1117 Series
OPERATIONAL EXPLANATION (Continued)
4. Current limit protection XB1117 series is protected against overload conditions. Current protection is triggered at 1.5A (TYP.). 5. Thermal consideration The XB1117 series contain thermal limiting circuitry designed to protect itself from over-temperature conditions. Even for normal load conditions, maximum junction temperature ratings must not be exceeded. As mentioned in thermal protection section, we need to consider all sources of thermal resistance between junction and ambient. It includes junction-to-case, case-to-heat-sink interface and heat sink thermal resistance itself. Junction-to-case thermal resistance is specified from the IC junction to the bottom of the case directly below the die. Proper mounting is required to ensure the best possible thermal flow from this area of the package to the heat sink. The case of all devices in this product series is electrically connected to the output. Therefore, if the case of the device must be electrically isolated, a thermally conductive spacer is recommended.
APPLICATION CIRCUITS
Adjustable Output Voltage
VIN=5V VIN
XB1117K
VOUT ADJ R1
*VOUT=1.5-3.45V
10F ** 10F 1k R2 2k
10F
Note:
*VOUT=VREF (1+
R2 )+IADJxR2 R1
**Optional for improved ripple rejection
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XB1117
Series
APPLICATION CIRCUITS (Continued)
Regulator with reference voltage
VIN VIN GND VREF 10F
** ** 10 10F
XB1117
VOUT
*VOUT
10F R11k Zener diode or voltage reference
*VOUT=VREF+VZ(VZ: Note: *Vout = VREF+VZ(VZ: Breakdown voltage of Zener diode) ** Optional for improved ripple rejection **Optional
Regulator with reverse diode protection
VIN VIN
XB1117
VOUT GND
VOUT
10F
10F
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XB1117 Series
TYPICAL PERFORMANCE CHARACTERISTICS
(1) Load StabilityAmbient Temperature
XB117K12B
VIN=5V ILOAD=1A CIN=10F(tantalum),CL=10F(tantalum)
(2) Reference VoltageAmbient Temperature
XB117K12B
VIN=5V IOUT=1A CIN=10F(tantalum),CL=10F(tantalum)
(3) Output Short Circuit CurrentDropout Voltage
XB117P33
TJ=25% CIN=10F(tantalum),CL=10F(tantalum)
(4) Dropout VoltageOutput Current
XB117P33
TJ=25 CIN=10F(tantalum),CL=10F(tantalum)
(5) Adjust Pin CurrentAmbient Temperature
XB117K12B
VIN=5.0V CIN=10F(tantalum),CL=10F(tantalum)
(6) Supply CurrentDropout Voltage
XB117P33
TJ=25 CIN=10F(tantalum),CL=10F(tantalum)
(7) Load Transient Response
(8) Input Transient Response
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