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MIC2562A
Micrel
MIC2562A
PCMCIA/CardBus Socket Power Controller
General Description
The MIC2562A PCMCIA (Personal Computer Memory Card International Association) and CardBus Power Controller handles all PC Card slot power supply pins, both VCC and VPP. The MIC2562A switches between the three VCC voltages (0V, 3.3V and 5.0V) and the VPP voltages (OFF, 0V, 3.3V, 5V, or 12.0V) required by PC Cards. The MIC2562A switches voltages from the system power supply to VCC and VPP. Output voltage is selected by two digital inputs each and output current ranges up to 1A for VCC and 250mA for VPP. The MIC2562A provides power management capability controlled by the PC Card logic controller. Voltage rise and fall times are well controlled. Medium current VPP and high current VCC output switches are self-biasing: no +12V supply is required for 3.3V or 5V output. The MIC2562A is designed for efficient operation. In standby (sleep) mode the device draws very little quiescent current, typically 0.3A. The device and PCMCIA port is protected by current limiting and overtemperature shutdown. Full crossconduction lockout protects the system power supply. The MIC2562A is an improved version of the MIC2562, offering lower ON-resistance and a VCC pull-down clamp in the OFF mode. It is available in a 14-pin 0.150" SOIC.
Applications
* * * * * * * * * * * * * * * * * * * * * * * PC Card Power Supply Pin Voltage Switch CardBus Slot Power Supply Control Data Collection Systems Machine Control Data Input Systems Wireless Communications Bar Code Data Collection Systems Instrumentation Configuration/Datalogging Docking Stations (portable and desktop) Power Supply Management Analog Power Switching High Efficiency, Low Resistance Switches Require No 12V Bias Supply No External Components Required Output Current Limit and Overtemperature Shutdown Open-Drain Flag for Error Condition Indication Ultra Low Power Consumption Complete PC Card/CardBus V and V Switch Matrix CC PP in a Single Package Logic Compatible with Industry Standard PC Card Logic Controllers No Voltage Shoot-Through or Switching Transients Break-Before-Make Switching Digital Selection of V and V Voltages CC PP Over 1A V Output Current CC Over 200mA V Output Current PP Small 14-Pin SOIC Package
Features
Ordering Information
Part Number MIC2562A-0BM MIC2562A-1BM Temperature Range -40C to +85C -40C to +85C Package 14-pin Narrow SOIC 14-pin Narrow SOIC
Pin Configuration
GND VCC5 IN 12 3 VCC OUT * 11 4 VCC5 IN * 10 5 VCC OUT FLAG 6 9 VCC3 IN VPP IN 7 8 VCC OUT VPP OUT * see table below
14 13 2
Note: see the logic table inside for a description of the differences between the logic options
Typical Application
5V System Power 3.3V Supply 12V
(opt)
VPPIN VCC3IN VCC5IN (opt)
VCC5_EN VCC3_EN
VPP1 VPP2 PCMCIA Card Slot
EN0
14 Pin S.O. Package
Both VCC5 IN pins must be connected. All three VCC OUT pins must be connected.
EN1 MIC2562 VCC VCC5_EN VCC3_EN
PCMCIA Card Slot Controller
MIC2562A Pin Assignments Pin 3 4 -0 EN0 EN1 -1 VPP_VCC VPP_PGM
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(Notes 1 and 2) Supply Voltage, VPP IN ...................................................... 15V VCC3 IN ................................................................ 7.5V VCC5 IN ................................................................ 7.5V FLAG Pull-up Voltage ................................................. 7.5V Logic Input Voltages ..................................... -0.3V to +10V Output Current (each Output) VPP OUT ............................ >200mA, Internally Limited VCC OUT ...................................... >1A, Internally Limited
Absolute Maximum Ratings
Power Dissipation, TAMBIENT 25C ...... Internally Limited SOIC ............................................................... 800 mW Derating Factors (To Ambient) SOIC .............................................................. 4 mW/C Storage Temperature .............................. -65C to +150C Operating Temperature (Die) ................................... 125C Lead Temperature (5 sec) ........................................ 260C
Logic Block Diagram
VPP IN (optional) EN1 EN0
MIC2562 Control Logic
VPP OUT
VCC5_EN VCC3_EN
VCC OUT
FLAG
VCC3 IN VCC5 IN
ILimit / Thermal Shut Down Gate Drive Generator
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(Over operating temperature range with VCC3 IN = 3.3V, VCC5 IN = 5.0V, VPP IN = 12V, unless Conditions Min Typ Max Units
Electrical Characteristics:
otherwise specified.) Symbol DIGITAL INPUTS VIH VIL IIN Logic 1 Input Voltage Logic 0 Input Voltage Input Current Parameter
2.2 -0.3 0 V < VIN < 5.5V
7.5 0.8 1
V V A
VPP OUTPUT IPP OUT Hi-Z IPPSC RO High Impedance Output Leakage Current Short Circuit Current Limit Switch Resistance, Shutdown Mode 0 VPP OUT 12V VPP OUT = 0 Select VPP OUT = 5V Select VPP OUT = 3.3V IPP OUT = -100mA (Sourcing) VPP IN = 12V IPP OUT = -100 mA (Sourcing) Select VPP OUT = clamped to ground IPP OUT = 50A (Sinking) 0.2 1 10 A
0.4 1.8 3.3 2.5 5
A
RO
Switch Resistance, Select VPP OUT = 12V Switch Resistance, Select VPP OUT = 0V
0.6
1
RO
2500
3900
VPP SWITCHING TIME (See Figure 1) t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t14 t15 t16 t11 t12 t13 Output Turn-ON Delay (Note 3) VPP OUT = Hi-Z to 10% of 3.3V VPP OUT = Hi-Z to 10% of 5V VPP OUT = Hi-Z to 10% of 12V VPP OUT = 10% to 90% of 3.3V VPP OUT = 10% to 90% of 5V VPP OUT = 10% to 90% of 12V VPP OUT = 3.3V to 90% of 12V VPP OUT = 5V to 90% of 12V VPP OUT = 12V to 90% of 3.3V VPP OUT = 12V to 90% of 5V VPP OUT = 3.3V to Hi-Z VPP OUT = 5V to Hi-Z VPP OUT = 12V to Hi-Z VPP OUT = 90% to 10% of 3.3V VPP OUT = 90% to 10% of 5V VPP OUT = 90% to 10% of 12V 100 100 100 100 100 100 100 5 10 70 200 300 225 250 200 200 350 200 200 200 50 50 300 50 50 250 800 1000 800 1000 800 800 1200 1000 1000 1000 1000 1000 2000 s
Output Rise Time (Note 3)
s
Output Transition Timing (Note 3)
s
Output Turn-Off Delay Time (Note 3)
ns
Output Turn-OFF Fall Time (Note 3)
ns
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Electrical Characteristics (continued)
Symbol VCC OUTPUT ICCSC RO Short Circuit Current Limit Switch Resistance VCC OUT = 0 Select VCC OUT = 3.3V ICC OUT = -1A (Sourcing) Select VCC OUT = 5V ICC OUT = -1A (Sourcing) Select VCC OUT = clamped to ground ICC OUT = 0.1mA (Sinking) VCC SWITCHING TIME (See Figure 2) t1 t2 t3 t4 t7 t8 t5 t6 POWER SUPPLY ICC5 VCC5 IN Supply Current (5V) VCC OUT = 5V or 3.3V, ICC OUT = 0 VCC OUT = 0V (Sleep Mode) ICC3 VCC3 IN Supply Current (3.3V) (Note 6) IPP IN VPP IN Supply Current (12V) (Note 7) VCC OUT = 5V or 3.3V, ICC OUT = 0 VCC OUT = 0V (Sleep Mode) VPP OUT = 3.3V or 5V. IPP OUT = 0 VPP OUT = Hi-Z, 0 or VPP 8 0.2 40 0.1 0.3 0.3 50 10 100 10 4 4 A A A Output Fall Time (Note 4) Output Turn-Off Delay (Notes 4, 5) Output Turn ON Delay Time (Note 4) Output Rise Time (Note 4) VCC OUT = 0V to 10% of 3.3V VCC OUT = 0V to 10% of 5.0V VCC OUT = 10% to 90% of 3.3V VCC OUT = 10% to 90% of 5V VCC OUT = 3.3V VCC OUT = 5V VCC OUT = 90% to 10% of 3.3V VCC OUT = 90% to 10% of 5.0V 100 100 200 200 300 750 700 1500 2.4 2.8 240 600 1500 3000 2500 6000 8 8 1000 2000 s ms s s 1 1.5 100 150 A m Parameter Conditions Min Typ Max Units
70
100
m
500
3900
VCC5 VCC3 VPP IN
Operating Input Voltage (5V) Operating Input Voltage (3.3V) Operating Input Voltage (12V)
VCC5 IN not required for operation (Note 6) VPP IN not required for operation (Note 8)
-- 3.0 --
5.0 3.3 12.0
6 6 14.5
V V V
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Electrical Characteristics (continued)
Symbol Parameter Conditions Min Typ Max Units
THERMAL SHUTDOWN TSD Thermal Shutdown Temperature 130 C
FLAG OUTPUT VO OK FLAG Threshold Voltage (Note 9) FLAG High (OK) Threshold voltage VCC - 1 VPP - 1 V
NOTE 1: NOTE 2: NOTE 3: NOTE 4: NOTE 5: NOTE 6: NOTE 7: NOTE 8: NOTE 9:
Functional operation above the absolute maximum stress ratings is not implied. Static-sensitive device. Store only in conductive containers. Handling personnel and equipment should be grounded to prevent damage from static discharge. RL = 100 connected to ground. RL = 10 connected to ground. Delay from commanding Hi Z or 0V to beginning slope. Does not apply to current limit or overtemperature shutdown conditions. The MIC2562A uses VCC3 IN for operation. For single 5V supply systems, connect 5V to both VCC3 IN and VCC5IN. See Applications Information for further details. VPP IN is not required for operation. VPP IN must be either high impedance or greater than or approximately equal to the highest voltage VCC in the system. For example, if both 3.3V and 5V are connected to the MIC2562A, VPP IN must be either 5V, 12V, or high impedance. A 10k pull-up resistor is connected between FLAG and VCC3 IN.
A VPP Enable
0
B
C
D
E
F
G
H
J
K
VPP to 3.3V
VPP to 12V
VPP to 3.3V
VPP OFF
VPP to 5V
VPP to 12V
VPP to 5V
VPP OFF
VPP to 12V
VPP OFF
t13 t10
t7
t9
t8
t6
t16
12V
VPP Output
t1
t3 t2 t4 t11 t5 t15 t12
5V t14 3.3V
0
FLAG
Figure 1. MIC2562A VPP Timing Diagram. VPP Enable is shown generically: refer to the timing tables (below). At time "A" VPP = 3.3V is selected. At B, VPP is set to 12V. At C, VPP = 3.3V (from 12V). At D, VPP is disabled. At E, VPP is programmed to 5V. At F, VPP is set to 12V. At G, VPP is programmed to 5V. At H, VPP is disabled. At J, VPP is set to 12V. And at K, VPP is again disabled. RL = 100 for all measurements. Load capacitance is negligible. MIC2562A 58 July 1999
MIC2562A
A VCC Enable
0
Micrel
B C D
VCC to 3.3V
VCC OFF
VCC to 5V
VCC OFF
t1
t2 t4
t8 t6
5V
t3
t7 t5
3.3V
VCC Output
0
FLAG
0
Figure 2. MIC2562A VCC Timing Diagram. VCC Enable is shown generically: refer to the timing tables (below) for specific control logic input. At time A, VCC is programmed to 3.3V. At B, VCC is disabled. At C, VCC is programmed to 5V. And at D, VCC is disabled. RL = 10. FLAG pull-up resistor is 10k to VCC3 IN.
MIC2562A-0 Control Logic Table VCC5_EN
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
VCC3_EN
0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
EN1
0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
EN0
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
VCC OUT
Clamped to Ground Clamped to Ground Clamped to Ground Clamped to Ground 3.3 3.3 3.3 3.3 5 5 5 5 3.3 3.3 3.3 3.3
VPP OUT
High Z High Z High Z Clamped to Ground High Z 3.3 12 Clamped to Ground High Z 5 12 Clamped to Ground High Z 3.3 5 Clamped to Ground
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MIC2562A-1 Control Logic (compatible with Cirrus Logic CL-PD6710 & PD672x-series Controllers) VCC5_EN
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
VCC3_EN
0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
VPP_PGM
0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
VPP_VCC
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
VCC OUT
Clamped to Ground Clamped to Ground Clamped to Ground Clamped to Ground 5 5 5 5 3.3 3.3 3.3 3.3 Clamped to Ground Clamped to Ground Clamped to Ground Clamped to Ground
VPP OUT
Clamped to Ground High Z High Z High Z Clamped to Ground 5 12 High Z Clamped to Ground 3.3 12 High Z Clamped to Ground High Z High Z High Z
MIC2562A-2 Logic (Compatible with Databook Controllers) Pin 1
0 1 0 1 0 1 0 1
Pin 2
1 1 0 0 1 1 0 0
Pin 3
0 0 0 0 1 1 1 1
Pins 8, 10, 12
VCC OUT
Hi-Z 3.3V 3.3V 3.3V Hi-Z 5V 5V 5V
Pin 7
VPP OUT
Clamped to Ground 3.3V 12V Clamped to Ground Clamped to Ground 5V 12V Clamped to Ground
VCCSEL0(1) VPPSEL0(1) VCCSEL2(3)
The Databook DB86184 PCMCIA controller requires two 100k pull-down resistors from pins 5 and 7 to ground and a 100k pull-up resistor from pin 6 to +3.3V (or +5V). Connect MIC2560-2 pin 8 to ground.
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If no card is inserted or the system is in sleep mode, the slot logic controller outputs a (VCC3 IN, VCC5 IN) = (0,0) to the MIC2562A, which shuts down VCC. This also places the switch into a high impedance output shutdown (sleep) mode, where current consumption drops to nearly zero, with only tiny CMOS leakage currents flowing. Internal device control logic and MOSFET drive and bias voltage is powered from VCC3 IN. The high voltage bias is generated by an internal charge pump quadrupler. Systems without 3.3V may connect VCC3 IN to 5V. Input logic threshold voltages are compatible with common PC Card logic controllers using either 3.3V or 5V supplies. The PC Card Specification defines two VPP supply pins per card slot. The two VPP supply pins may be programmed to different voltages. VPP is primarily used for programming FLASH memory cards. Implementing two independent VPP voltages is easily accomplished with the MIC2562A and a MIC2557 PCMCIA VPP Switching Matrix. Figure 3 shows this full configuration, supporting independent VPP and both 5.0V and 3.3V VCC operation. However, few logic controllers support multiple VPP--most systems connect VPP1 to VPP2 and the MIC2557 is not required. This circuit is shown in Figure 4. During Flash memory programming with standard (+12V) Flash memories, the PC Card slot logic controller outputs a (0,1) to the EN0, EN1 control pins of the MIC2562A, which connects VPP IN (nominally +12V) to VPP OUT. The low ON resistance of the MIC2562A switch allows using a small bypass capacitor on the VPP OUT pins, with the main filtering action performed by a large filter capacitor on VPP IN (usually the main power supply filter capacitor is sufficient). Using a small-value capacitor such as 0.1F on the output causes little or no timing delays. The VPP OUT transition from VCC to 12.0V typically takes 250s. After programming is completed, the controller outputs a (EN1, EN0) = (0,1) to the MIC2562A, which then reduces VPP OUT to the VCC level. Break-before-make switching action and controlled rise times reduces switching transients and lowers maximum current spikes through the switch. Figure 5 shows MIC2562A configuration for situations where only a single +5V VCC is available. Output Current and Protection MIC2562A output switches are capable of passing the maximum current needed by any PC Card. The MIC2562A meets or exceeds all PCMCIA specifications. For system and card protection, output currents are internally limited. For full system protection, long term (millisecond or longer) output short circuits invoke overtemperature shutdown, protecting the MIC2562A, the system power supplies, the card socket pins, and the PC Card. A final protective feature is the error FLAG, which signals the PC Card slot logic controller when a fault condition exists, allowing the controller to notify the user that the card inserted has a problem. The open-drain FLAG monitors the voltage level on both VCC OUT and VPP OUT and activates (pulls low) when either output is 1V below its programmed level or an overtemperature fault exists. This FLAG signals output voltage transitions as well as fault conditions. Refer to Figures 1 and 2 for details. 61 MIC2562A
Applications Information
PC Card VCC and V control is easily accomplished using PP the MIC2562A PC Card/CardBus Slot VCC & VPP Power Controller IC. Four control bits determine VCC OUT and VPP OUT voltage and standby/operate mode condition. VCC outputs of 3.3V and 5V at the maximum allowable PC Card current are supported. VPP OUT output voltages of VCC (3.3V or 5V), VPP, 0V, or a high impedance state are available. When the VCC clamped to ground condition is selected, the device switches into "sleep" mode and draws only nanoamperes of leakage current. An error flag alerts the user if the output voltage is too low because of overtemperature or overcurrent faults. Protection from hot switching is provided which prevents feedback from the VCC OUT (from 5V to 3.3V, for example) by locking out the low voltage switch until the initial switch's gate voltage drops below the desired lower VCC. The MIC2562A operates from the computer system main power supply. Device logic and internal MOSFET drive is generated internally by charge pump voltage multipliers powered from VCC3 IN. Switching speeds are carefully controlled to prevent damage to sensitive loads and meet all PC Card Specification speed requirements. Supply Bypassing External capacitors are not required for operation. The MIC2562A is a switch and has no stability problems. For best results however, bypass VCC3 IN, VCC5 IN, and VPP IN inputs with 1F capacitors to improve output ripple. As all internal device logic and comparison functions are powered from the VCC3 IN line, the power supply quality of this line is the most important, and a bypass capacitor may be necessary for some layouts. Both VCC OUT and VPP OUT pins may use 0.01F to 0.1F capacitors for noise reduction and electrostatic discharge (ESD) damage prevention. Larger values of output capacitors are not necessary. PC Card Slot Implementation The MIC2562A is designed for full compatibility with the Personal Computer Memory Card International Association's (PCMCIA) PC Card Specification, (March 1995), including the CardBus option. One MIC2562A is required for each PC Card slot. When a memory card is initially inserted, it should receive VCC -- either 3.3V 0.3V or 5.0V 5%. The initial voltage is determined by a combination of mechanical socket "keys" and voltage sense pins. The card sends a handshaking data stream to the controller, which then determines whether or not this card requires VPP and if the card is designed for dual VCC. If the card is compatible with and desires a different VCC level, the controller commands this change by disabling VCC, waiting at least 100ms, and then re-enabling the other VCC voltage. VCC switches are turned ON and OFF slowly. If commanded to immediately switch from one VCC to the other (without turning OFF and waiting 100ms first), enhancement of the second switch begins after the first is OFF, realizing breakbefore-make protection. VPP switches are turned ON slowly and OFF quickly, which also prevents cross conduction. July 1999
MIC2562A
5V System Power 3.3V Supply 12V
VPPIN VCC3IN VCC5IN (opt)
Micrel
5V System Power 3.3V Supply
PCMCIA Card Slot VPP1 VPP2
12V
(opt)
VPPIN VCC3IN VCC5IN (opt)
VPP1 VPP2 PCMCIA Card Slot
EN0 EN1 MIC2562 VCC VCC5_EN VCC3_EN
EN0 EN1 MIC2562 VCC VCC5_EN VCC3_EN
PCMCIA Card Slot Controller
PCMCIA Card Slot Controller
VPP IN VDD
VCC
EN0 EN1
VPP OUT MIC2557
Figure 3. MIC2562A PC Card slot power control application with dual VCC (5V and 3.3V) and separate VPP1 and VPP2.
Figure 4. Typical MIC2562A PC Card slot power control application with dual VCC (5V and 3.3V). Note that VPP1 and VPP2 are driven together.
5V System Power Supply 12V
(opt)
VPPIN VCC3IN VCC5IN (opt)
VPP1 VPP2 PCMCIA Card Slot
EN0 EN1 MIC2562 VCC VCC5_EN VCC3_EN
PCMCIA Card Slot Controller
Figure 5. PC Card slot power control application without an available 3.3V VCC. Note that VCC3 IN and VCC5 IN are driven together. The MIC2562A is powered by the VCC3 IN line. In this configuration, VCC OUT will be 5V when either VCC3 or VCC5 is enabled from the logic table. Take advantage of the lower switch resistance of the VCC5 switch by using the VCC5_EN control as your main VCC switch.
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