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MIC2566
Micrel
MIC2566
Single-Slot PC Card/CardBus Power Controller
Preliminary
General Description
The MIC2566 single-slot PC Card / CardBus power controller is a VCC and VPP power switch matrix that supports 3.3V and 5V PC Card (PCMCIA) slot power supply pins. The MIC2566 can switch PC Card slot VCC voltages between 0V (ground), 3.3V and 5.0V and VPP voltages between 0V (ground), 3.3V, 5V, or high impedance at output currents of up to 1A for VCC and 200mA for VPP. The MIC2566 features well-controlled voltage rise and fall times. Each MIC2566 output voltage is switched by two digital inputs, typically controlled from a separate PC Card logic controller. The MIC2566 is designed for efficient operation. In standby (sleep) mode the device draws very little quiescent current, typically only 0.3A. The power controller includes thermal shutdown and protects itself and its PC Card ports with current limiting. Full cross-conduction lockout protects the system power supplies. The MIC2566 is available in 14-pin SOP and TSSOP packages.
Features
* * * * * * * * * * * * * * * * * * * * * * Complete single-slot power switch solution No external components required Output current limit and thermal shutdown Ultra-low power consumption Compatible with standard PC Card logic controllers Break-before-make switching (no transients) Digital VCC and VPP voltage selection > 1A VCC output current per slot > 120mA VPP output current per slot 14-pin SOP and TSSOP package Pb-free SO package UL recognized, file #179633 Single-slot PC Card power supply 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 Portable and desktop computer docking stations Power supply management Power analog switching
Applications
Typical Application
5V System Power Supply 3.3V
VCC3IN
VCC5 IN (optional)
VPP1 VPP2
EN0 EN1 MIC2566 VCC PCMCIA Card Slot Controller VCC5_EN VCC3_EN PCMCIA Card Slot
UL Recognized Component Micrel, Inc. * 1849 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 944-0970 * http://www.micrel.com
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MIC2566
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Ordering Information
Part Number MIC2566-0BM MIC2566-1BM MIC2566-0YM MIC2566-1YM MIC2566-0BTS MIC2566-1BTS Operating Temp. Range -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C Package 14-pin SOP 14-pin SOP 14-pin SOP 14-pin SOP 14-pin TSSOP 14-pin TSSOP X X Pb-Free
Pin Configuration
VCC5_EN VCC3_EN EN 0 EN 1 /FLAG NC VPP OUT 1 2 3 4 5 6 7*
MIC2566-0
14 13 12 11 10 9 *8
GND VCC5 IN VCC OUT VCC5 IN VCC OUT VCC3 IN VCC OUT
VCC5_EN VCC3_EN VPP VCC VPP PGM /FLAG NC VPP OUT
1 2 3 4 5 6 7*
MIC2566-1
14 13 12 11 10 9 *8
GND VCC5 IN VCC OUT VCC5 IN VCC OUT VCC3 IN VCC OUT
* Denotes pinout differences. Duplicate pins must be connected together for prober operation. Example: VCC5IN pins 11 & 13 must be externally connected together.
Pin Description
Pin Number MIC2566-0 1 2 3 3 4 4 5 6 7 9 8, 10, 12 11, 13 14 5 6 7 9 8, 10, 12 11, 13 14 Pin Number MIC2566-1 1 2 Pin Name VCC5 EN VCC3 EN EN0 VPP_VCC EN1 VPP_PGM /FLAG NC VPP OUT VCC3 IN VCC OUT VCC5 IN GND Pin Function VCC 5V Enable (Input). VCC 3.3V Enable (Input). Enable 0: Micrel standard logic-control signal. MIC2566-0 only. VPP_VCC Control: Cirrus Logic logic-controller compatible control signal. MIC2566-1 only. Enable 1: Micrel standard logic-control signal. MIC2566-0 only. Program: Cirrus Logic-compatible control signal. MIC2566-1 only. Error Flag: This pin requires a pull-up resistor (10k recommended) to VCC3IN or VCC5IN. Not internally connected. VPP Output: 0V (ground), 3.3V, 5V, or high-impedance output. 3.3V-Nominal Supply Input: Mandatory supply, switchable to VCC and VPP outputs. Also powers MIC2566 internal circuitry. VCC Output: 0V (ground), 3.3V, 5V, or high-impedance output. Pins 8, 10, and 12 must be externally connected. 5V-Nominal Supply Input: Optional supply, switchable to VCC and VPP outputs. Pins 11 and 13 must be externally connected. Ground.
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Absolute Maximum Ratings (Note 1)
VCC3 IN ....................................................................... +6.0V VCC5 IN ....................................................................... +6.0V VEN0, VEN1, VCC5EN, VCC3EN ............................ -0.3V to +6.0V VFLAG ......................................................................... +6.0V VPP OUT................................... >120mA, Internally Limited VCC OUT ......................................... >1A, Internally Limited Power Dissipation at TA 25C (PD) ....... Internally Limited Storage Temperature ............................... -65C to +150C Lead Temperature (5 sec.) ...................................... +260C ESD Rating, Note 3
Operating Ratings (Note 2)
VCC3 IN ........................................................ +3.0V to +5.5V VCC5 IN ............................................................. 0V to +5.5V VEN0, VEN1, VCC5EN, VCC3EN .................................. 0V to +5.5V VPP OUT............................................................ 0 to 120mA VCC OUT .................................................................. 0 to 1A Clock Frequency ................................................. 0 to 2MHz Ambient Temperature (TA) ......................... -40C to +85C Junction Temperature (TJ) ...................................... +125C Package Thermal Resistance (JA) SOP ................................................................. 90C/W TSSOP ............................................................ 83C/W
Electrical Characteristics (Note 4)
Specified over operating ambient temperature range of -40C to +85C with VCC3 IN = 3.3V, VCC5 IN = 5.0V, unless otherwise specified. Symbol Parameter Condition Min Typ Max Units
DIGITAL INPUTS (VEN0, VEN1, VCC3EN, VCC5EN) VIH VIL IIN VPP OUTPUT IPP OUT Hi-Z IPPSC RO High Impedance Output Leakage Current Short Circuit Current Limit Switch Resistance Shutdown Mode 0 VPP OUT 5V VPP OUT = 0V Select VPP OUT = 5V Select VPP OUT = 3.3V IPP OUT = -100mA (Sourcing) Select VPP OUT = clamped to ground IPP OUT = 50A (Sinking) VPP OUT = Hi-Z to 10% of 3.3V VPP OUT = Hi-Z to 10% of 5V VPP OUT = 10% to 90% of 3.3V VPP OUT = 10% to 90% of 5V VPP OUT = 3.3V to Hi-Z VPP OUT = 5V to Hi-Z VPP OUT = 90% to 10% of 3.3V VPP OUT = 90% to 10% of 5V VCC OUT = 0V 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 = 1mA (Sinking) 1 100 100 0.12 1 0.4 1.4 1.5 1300 3 4 3900 10 A A Logic 1 Input Voltage Logic 0 Input Voltage Input Current 0 V < VIN < 5.5V 0.7xVCC3IN -0.3 5.5 0.3xVCC3IN 2 V V A
RO
Switch Resistance, Select VPP OUT = 0V Output Turn-On Delay Note 5 Output Rise Time Note 5 Output Turn-Off Delay Time Note 5 Output Turn-Off Fall Time Note 5
VPP SWITCHING TIME (See Figure 1) t1 t2 t3 t4 t5 t6 t7 t8 VCC OUTPUT ICCSC RO Short Circuit Current Limit Switch Resistance 1.5 120 180 A m 5 10 200 300 400 400 50 50 50 50 800 1000 1000 1000 1000 1000 s s s s ns ns ns ns
90
135
m
1800
3900
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Electrical Characteristics (continued)
Symbol Parameter Condition Min Typ Max Units s s s ms ms s s A A A A V V C A V VCC SWITCHING TIME (See Figure 2) t9 t10 t11 t12 t13 t14 t15 t16 POWER SUPPLY ICC5 ICC3 VCC5 VCC3 TSD IFLAGLK VOL
Note 1. Note 2. Note 3. Note 4. Note 5. Note 6. Note 7. Note 8.
Output Turn On Delay Time Note 6 Output Rise Time Note 6 Output Turn-Off Delay Notes 6, 7 Output Fall Time Note 6
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
200 350 700 1500 0.65 0.7 300 600
1500 3000 2500 6000 2 2 1000 2000
VCC5 IN Supply Current (5V) VCC3 IN Supply Current (3.3V) Note 8 Operating Input Voltage (5V) Operating Input Voltage (3.3V)
VCC OUT = 5V or 3.3V, ICC OUT = 0 VCC OUT = 0V (Sleep Mode) VCC OUT = 5V or 3.3V, ICC OUT = 0 VCC OUT = 0V (Sleep Mode) VCC5 IN not required for operation Note 8 3.0
8 0.2 40 0.1 5.0 3.3
50 10 100 10 5.5 5.5
THERMAL SHUTDOWN Thermal Shutdown Temperature 130
FLAG OUTPUT Error FLAG Off Current FLAG Output Low Voltage VFLAG = 5V VCCx IN - VCC OUT > 1V 1mA pull-up from FLAG to VCCx IN 4 0.4
Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Specification for packaged product only. 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 MIC2566 uses VCC3 IN for operation. For single 5V supply systems, connect 5V to both VCC3 IN and VCC5IN. See "Applications Information" for further details.
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Timing Diagram
A VPP Enable 0 VPP to 3.3V B VPP OFF C VPP to 5V D VPP OFF
t5 VPP OUT t1 5V 3.3V t3 t7
t2 t4
t6 t8
0
FLAG 0
Figure 1. MIC2566 VPP Timing Diagram
Note. VPP Enable is shown generically. Refer to the logic tables on the next page for specific control logic input. At time A, VPP = 3.3V. At B, VPP is disabled. At C, VPP is programmed to 5V. At D, VPP is disabled. RL = 100 for all measurements. Load capacitance is negligible.
A VCC Enable 0 VCC to 3.3V
B VCC OFF
C VCC to 5V
D VCC OFF
t9 5V 3.3V VCC OUT t11 t15
t10
t12
t16
t14
t13
0
FLAG 0
Figure 2. MIC2566 VCC Timing Diagram
Note. VCC Enable is shown generically. Refer to the logic tables on the next page 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 = 100. FLAG pull-up resistor is 10k to VCC3 IN.
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MIC2566-0 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 High Z Clamped to Ground High Z 5 High Z Clamped to Ground High Z 3.3 5 Clamped to Ground
MIC2566-1 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 High Z High Z Clamped to Ground 3.3 High Z High Z Clamped to Ground High Z High Z High Z
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Functional Diagram
EN1 VPP OUT EN0
VCC5_EN
MIC2566 Control Logic VCC OUT
VCC5_EN
FLAG
VCC3 IN VCC5 IN
ILimit / Thermal Shut Down
Gate Drive Generator
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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. 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 MIC2566, 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. Figure 3 shows MIC2566 configuration for situations where only a single +5V VCC is available. Output Current and Protection MIC2566 output switches are capable of passing the maximum current needed by any PC Card. 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 MIC2566, 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.
Applications Information
PC Card VCC and VPP control is easily accomplished using the MIC2566 PC Card/CardBus Slot VCC and 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), 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 MIC2566 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 MIC2566 is a switch and has no stability problems. For best results however, bypass VCC3 IN and VCC5 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 MIC2566 is designed for PC Card applications, including the CardBus option, that do not require a 12V bias. One MIC2566 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
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System Power Supply
5V
VCC3IN
VCC5IN
VPP1 VPP2 PCMCIA Card Slot
EN0 EN1 MIC2566 VCC PCMCIA Card Slot Controller VCC5_EN VCC3_EN
Figure 3. PC Card Slot Power Control Application Without an Available 3.3V VCC
Note that VCC3 IN and VCC5 IN are driven together. The MIC2566 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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Package Information
PIN 1
0.154 (3.90)
DIMENSIONS: INCHES (MM)
0.026 (0.65) MAX)
0.050 (1.27) 0.016 (0.40) TYP TYP 0.006 (0.15)
0.193 (4.90) 45 3-6 0.244 (6.20) 0.228 (5.80)
0.057 (1.45) 0.049 (1.25)
0.344 (8.75) 0.337 (8.55)
SEATING PLANE
14-Pin SOP
4.50 (0.177) 6.4 BSC (0.252) 4.30 (0.169)
DIMENSIONS: MM (INCH)
0.30 (0.012) 0.19 (0.007) 5.10 (0.200) 4.90 (0.193) 1.10 MAX (0.043) 0.20 (0.008) 0.09 (0.003)
0.65 BSC (0.026)
0.15 (0.006) 0.05 (0.002)
8 0
1.00 (0.039) REF 0.70 (0.028) 0.50 (0.020)
14-Pin TSSOP
MICREL, INC.
TEL
1849 FORTUNE DRIVE SAN JOSE, CA 95131
FAX
USA
+ 1 (408) 944-0800
+ 1 (408) 944-0970
WEB
http://www.micrel.com
The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2003 Micrel, Incorporated.
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