MIC2562A Micrel MIC2562A PCMCIA/CardBus Socket Power Controller General Description Features 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 0.3µA. The device and PCMCIA port is protected by current limiting and overtemperature shutdown. Full crossconduction lockout protects the system power supply during switching operations. 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, and the -1 logic option is also available in 16-pin TSSOP All support documentation can be found on Micrel’s web site at www.micrel.com. • 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 VCC and VPP switch matrix 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 VCC and VPP voltages • Over 1A VCC output current • Over 200mA VPP output current • Pb-free SOIC packages • UL recognized, file #179633 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 Typical Application 5V System Power 3.3V Supply 12V (opt) VPP IN VCC3 IN VCC5 IN (opt) VPP1 EN0 VPP2 EN1 PCMCIA Card Slot MIC2562 VCC PCMCIA Card Slot Controller VCC5_EN VCC3_EN 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 June 2004 1 M9999-062204 MIC2562A Micrel Ordering Information(1) Part Number Temperature Range Package MIC2562A-0BM –40°C to +85°C 14-pin Narrow SOIC Pb-Free MIC2562A-1BM –40°C to +85°C 14-pin Narrow SOIC MIC2562A-0YM –40°C to +85°C 14-pin Narrow SOIC X MIC2562A-1YM –40°C to +85°C 14-pin Narrow SOIC X MIC2562A-1BTS –40°C to +85°C 16-pin TSSOP MIC2562A-1YTS –40°C to +85°C 16-pin TSSOP X Note. 1. See “MIC2562A-0 Control Logic” table for a description of the differences between the logic options. Pin Configuration VCC5_EN 1 16 GND VCC3_EN 2 15 VCC5 IN VCC5_EN 1 14 GND VCC3_EN 2 13 VCC5 IN * 3 14 VCC OUT * 3 12 VCC OUT * 4 13 VCC5 IN * 4 11 VCC5 IN /FLAG 5 12 VCC OUT /FLAG 5 10 VCC OUT VPP IN 6 11 VCC3 IN VPP IN 6 9 VCC3 IN NC 7 10 NC VPP OUT 7 8 VCC OUT VPP OUT 8 VCC OUT * See table below * See table below 14-Pin SOIC (M) 16-Pin TSSOP (TS) Both VCC5 IN pins must be connected. All three VCC OUT pins must be connected. Both VCC5 IN pins must be connected. All three VCC OUT pins must be connected. Pin 3 4 June 2004 9 MIC2562A Pin Assignments -0 -1 VPP_VCC EN0 VPP_PGM EN1 Pin 3 4 2 MIC2562A Pin Assignments -0 -1 VPP_VCC EN0 VPP_PGM EN1 M9999-062204 MIC2562A Micrel Absolute Maximum Ratings(1) Operating Ratings(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 Power Dissipation (PD), TA ≤ 25°C .......... Internally Limited SOIC ................................................................... 800mW Lead Temperature (5 sec.) ........................................ 260°C Storage Temperature (TS) ....................... –65°C to +150°C Ambient Temperature (TA) ......................... –40°C to +85°C Operating Temperature (Die) .................................... 125°C Package Thermal Resistance (θJA) SOIC ................................................................. 120°C/W TSSOP ....................................... (4 layer board) 83°C/W Electrical Characteristics(3) Over operating temperature range with VCC3 IN = 3.3V, VCC5 IN = 5.0V, VPP IN = 12V; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C; unless noted. Symbol Parameter Condition Min Typ Max Units Digital Inputs VIH Logic 1 Input Voltage 2.2 7.5 V VIL Logic 0 Input Voltage –0.3 0.8 V IIN Input Current 0V < VIN < 5.5V ±1 µA IPP OUT Hi-Z High Impedance Output Leakage Current Shutdown Mode 0 ≤ VPP OUT ≤ 12V 10 µA IPPSC Short Circuit Current Limit VPP OUT = 0 RO Switch Resistance Select VPP OUT = 5V Select VPP OUT = 3.3V IPP OUT = –100mA (Sourcing) 1.8 3.3 2.5 5 Ω Ω RO Switch Resistance, Select VPP OUT = 12V VPP IN = 12V IPP OUT = –100mA (Sourcing) 0.6 1 Ω RO Switch Resistance, Select VPP OUT = 0V Select VPP OUT = clamped to ground IPP OUT = 50µA (Sinking) 2500 3900 Ω VPP OUT = Hi-Z to 10% of 3.3V 5 50 µs VPP OUT = Hi-Z to 10% of 5V 10 50 µs VPP Output 1 0.2 0.4 A VPP Switching Time (See Figure 1) t1 Output Turn-On Delay(4) t2 70 250 µs VPP OUT = 10% to 90% of 3.3V 100 200 800 µs VPP OUT = 10% to 90% of 5V 100 300 1000 µs VPP OUT = 10% to 90% of 12V 100 225 800 µs VPP OUT = 3.3V to 90% of 12V 100 250 1000 µs t8 VPP OUT = 5V to 90% of 12V 100 200 800 µs t9 VPP OUT = 12V to 90% of 3.3V 100 200 800 µs t10 VPP OUT = 12V to 90% of 5V 100 350 1200 µs VPP OUT = 3.3V to Hi-Z 200 1000 ns t15 VPP OUT = 5V to Hi-Z 200 1000 ns t16 VPP OUT = 12V to Hi-Z 200 1000 ns t3 t4 VPP OUT = Hi-Z to 10% of 12V Output Rise Time(4) t5 t6 t7 t14 Output Transition Timing(4) Output Turn-Off Delay Time(4) Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. Devices are ESD sensitive. Handling precautions recommended. 3. Specification for packaged product only. 4. RL = 100Ω connected to ground. June 2004 3 M9999-062204 MIC2562A Symbol Micrel Parameter Condition Min Typ Max Units VPP OUT = 90% to 10% of 3.3V 50 1000 ns t12 VPP OUT = 90% to 10% of 5V 50 1000 ns t13 VPP OUT = 90% to 10% of 12V 300 2000 ns VPP Switching Time (See Figure 1) Continued t11 Output Turn-Off Fall Time(4) VCC Output ICCSC Short Circuit Current Limit VCC OUT = 0 1 1.5 A RO Switch Resistance Select VCC OUT = 3.3V ICC OUT = –1A (Sourcing) 100 150 mΩ Select VCC OUT = 5V ICC OUT = –1A (Sourcing) 70 100 mΩ Select VCC OUT = clamped to ground ICC OUT = 0.1mA (Sinking) 500 3900 Ω VCC OUT = 0V to 10% of 3.3V 300 1500 µs VCC OUT = 0V to 10% of 5.0V 750 3000 µs VCC Switching Time (See Figure 2) t1 Output Turn-On Delay Time(5) t2 t3 Output Rise Time(5) t4 t7 Output Turn-Off Delay(5, 6) t8 t5 Output Fall Time(5) t6 VCC OUT = 10% to 90% of 3.3V 200 700 2500 µs VCC OUT = 10% to 90% of 5V 200 1500 6000 µs VCC OUT = 3.3V 2.4 8 ms VCC OUT = 5V 2.8 8 ms VCC OUT = 90% to 10% of 3.3V 100 240 1000 µs VCC OUT = 90% to 10% of 5.0V 100 600 2000 µs 8 50 µA VCC OUT = 0V (Sleep Mode) 0.2 10 µA VCC OUT = 5V or 3.3V, ICC OUT = 0 40 100 µA VCC OUT = 0V (Sleep Mode) 0.1 10 µA VPP OUT = 3.3V or 5V. IPP OUT = 0 0.3 4 µA VPP OUT = Hi-Z, 0 or VPP 0.3 4 µA 5.0 6 V 3.3 6 V 12.0 14.5 V Power Supply ICC5 ICC3 IPP IN VCC5 IN Supply Current (5V) VCC3 IN Supply Current (3.3V)(7) VPP IN Supply Current (12V)(8) VCC OUT = 5V or 3.3V, ICC OUT = 0 VCC5 Operating Input Voltage (5V) VCC5 IN not required for operation VCC3 Operating Input Voltage (3.3V) Note 7 VPP IN Operating Input Voltage (12V) 3.0 VPP IN not required for operation(9) Thermal Shutdown TSD Thermal Shutdown Temperature 130 °C VCC –1 VPP –1 V FLAG Output VO OK FLAG Threshold Voltage(10) FLAG High (OK) Threshold Voltage Notes: 4. RL = 100Ω connected to ground. 5. RL = 10Ω connected to ground. 6. Delay from commanding Hi-Z or 0V to beginning slope. Does not apply to current limit or overtemperature shutdown conditions. 7. The MIC2562A uses VCC3 IN for operation. For single 5V supply systems, connect 5V to both VCC3 IN and VCC5 IN. See “Applications Information” section for further details. 8. VPP IN is not required for operation. 9. 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. 10. A 10kΩ pull-up resistor is connected between FLAG and VCC3 IN. June 2004 4 M9999-062204 MIC2562A Micrel A VPP Enable 0 B C VPP to 12V VPP to 3.3V D VPP to 3.3V E F VPP OFF G VPP to 5V VPP to 12V VPP to 5V H J VPP OFF K VPP to 12V VPP OFF t13 t9 t7 t8 t10 t6 t16 12V VPP Output t3 t2 t4 t1 t11 t15 t12 t5 5V t14 3.3V 0 /FLAG Figure 1. MIC2562A VPP Timing Diagram VPP Enable is shown generically: refer to the timing tables. 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 = 100Ω for all measurements. Load capacitance is negligible. A VCC Enable B C VCC to 3.3V D VCC OFF VCC to 5V VCC OFF 0 t2 t1 t8 t4 5V t3 t6 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 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 = 10Ω. FLAG pull-up resistor is 10kΩ to VCC3 IN. June 2004 5 M9999-062204 MIC2562A Micrel MIC2562A-0 Control Logic Table VCC5_EN VCC3_EN EN1 EN0 VCC OUT VPP OUT 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 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 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 1 1 1 1 3.3 Clamped to Ground MIC2562A-1 Control Logic Table (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 June 2004 VCC3_EN VPP_PGM VPP_VCC VCC OUT VPP OUT 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 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 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 6 M9999-062204 MIC2562A Micrel Logic Block Diagram VPP IN (optional) EN1 VPP OUT EN0 VCC5_EN MIC2562 Control Logic VCC OUT VCC3_EN /FLAG VCC3 IN VCC5 IN ILIMIT / Thermal Shutdown Gate Drive Generator June 2004 7 M9999-062204 MIC2562A Micrel 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, 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. Applications Information PC Card VCC and VPP control is easily accomplished using the MIC2562A 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), 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’s 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. 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 0.1µF on the output causes little or no timing delays. The VPP OUT transition from VCC to 12.0V typically takes 250µs. 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. 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 1µF 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 0.01µF to 0.1µF 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 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. 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. 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. June 2004 8 M9999-062204 MIC2562A Micrel 5V System Power 3.3V Supply 12V VPP IN VCC3 IN VCC5 IN (opt) PCMCIA Card Slot VPP1 EN0 VPP2 EN1 MIC2562 VCC PCMCIA Card Slot Controller VCC5_EN VCC3_EN VPP IN VDD EN0 EN1 VCC VPP OUT MIC2557 Figure 3. MIC2562A PC Card Slot Power Control Application with Dual VCC (5V and 3.3V) and Separate VPP1 and VPP2 5V System Power 3.3V Supply 12V (opt) VPP IN VCC3 IN VCC5 IN (opt) VPP1 EN0 VPP2 EN1 PCMCIA Card Slot MIC2562 VCC PCMCIA Card Slot Controller VCC5_EN VCC3_EN Figure 4. Typical MIC2562A PC Card Slot Power Control Application with Dual VCC (5V and 3.3V) Note: VPP1 and VPP2 are driven together. June 2004 9 M9999-062204 MIC2562A Micrel 5V System Power Supply 12V (opt) VPP IN VCC3 IN VCC5 IN (opt) VPP1 EN0 VPP2 EN1 PCMCIA Card Slot MIC2562 VCC PCMCIA Card Slot Controller VCC5_EN VCC3_EN Figure 5. PC Card Slot Power Control Application Without an Available 3.3V VCC Note: 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. June 2004 10 M9999-062204 MIC2562A Micrel Package Information PIN 1 DIMENSIONS: INCHES (MM) 0.154 (3.90) 0.026 (0.65) MAX) 0.193 (4.90) 0.050 (1.27) 0.016 (0.40) TYP TYP 45° 0.006 (0.15) 0.057 (1.45) 0.049 (1.25) 0.344 (8.75) 0.337 (8.55) SEATING PLANE 3°–6° 0.244 (6.20) 0.228 (5.80) 14-Pin Narrow SOIC (M) Rev. 01 16-Pin TSSOP (TS) June 2004 11 M9999-062204 MIC2562A Micrel MICREL, INC. 1849 FORTUNE DRIVE TEL + 1 (408) 944-0800 FAX SAN JOSE, CA 95131 + 1 (408) 474-1000 WEB USA http://www.micrel.com The information furnished by Micrel in this data sheet 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. © 2004 Micrel, Incorporated. June 2004 12 M9999-062204