MIC2568 Micrel MIC2568 Dual-Slot PC Card/CardBus Power Controller Preliminary General Description Features The MIC2568 dual-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 MIC2568 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 250mA for VPP. The MIC2568 features well-controlled voltage rise and fall times. Each MIC2568 output voltage is switched by two digital inputs, typically controlled from a separate PC Card logic controller. The MIC2568 is designed for efficient operation. In standby (sleep) mode the device draws very little quiescent current, typically only 0.3µA. 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 MIC2568 is available in 28-pin SSOP and TSSOP packages. Complete single-chip dual-slot power switch 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 > 200mA VPP output current per slot 28-pin SSO and TSSO package Pb-free 28-pin SSO package UL recognized, file #179633 Applications • • • • • • • • • • Dual-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 Typical Application Independent supply inputs can be used with two system power supplies. (Single system supply shown.) System Power Supply (OPTIONAL ) 5V 3.3V Slot A Address and data lines between logic controller and PCMCIA cards not shown. VPP1 A V CC3 IN VPP2 A V CC5 IN (OPTIONAL) A EN1 A V PP OUT A EN0 A V CC OUT A V CC5 EN Dual-Slot PC Card Logic Controller VCC A V CC3 EN B EN1 MIC2568 Power Controller B EN0 VCC Slot B GND VPP1 B VPP OUT B VCC5 EN VPP2 B VCC OUT B VCC3 EN VCC (OPTIONAL) PC Card B VCC B VCC5 IN B VCC3 IN PC Card A Motherboard Dual-Slot PC Card Power Control 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 May 2003 1 MIC2568 MIC2568 Micrel Ordering Information Operating Temperature Range Package MIC2568-0BSM –40°C to +85°C 28-pin SSOP MIC2568-1BSM –40°C to +85°C 28-pin SSOP MIC2568-0YSM –40°C to +85°C 28-pin SSOP X MIC2568-1YSM –40°C to +85°C 28-pin SSOP X MIC2568-0BTS –40°C to +85°C 28-pin TSSOP MIC2568-1BTS –40°C to +85°C 28-pin TSSOP Part Number Pb-Free Pin Configuration A V CC5 IN 1 28 A V CC OUT A V CC OUT 2 27 A V CC3 IN A V CC5 IN 3 26 A V CC OUT GND 4 25 NC A V CC5 EN 5 24 A V CC3 EN 6 23 A EN0 7 * * 22 A EN1 8 * * 21 NC 9 20 A V CC5 IN 1 28 A V CC OUT A V CC OUT 2 27 A V CC3 IN A V CC5 IN 3 26 A V CC OUT GND 4 25 NC A V PP OUT A V CC5 EN 5 24 A V PP OUT NC A V CC3 EN 6 23 NC B EN1 A V PP_VCC 7 * * 22 B VPP_PGM B EN0 * * 21 B VPP_VCC 20 B VCC3 EN A V PP_PGM 8 B VCC3 EN NC 9 B VPP OUT 10 19 B VCC5 EN NC 11 18 GND B VCC OUT 12 17 B VCC5 IN B VCC3 IN 13 16 B VCC OUT B VCC OUT 14 15 B VCC5 IN B VPP OUT 10 19 B VCC5 EN NC 11 18 GND B VCC OUT 12 17 B VCC5 IN B VCC3 IN 13 16 B VCC OUT B VCC OUT 14 15 B VCC5 IN MIC2568-0 MIC2568-1 * Denotes pinout differences. Duplicate pins must be connected together for proper operation. Example: "A VCC5IN" pins 1 and 3 must be connected. Pin Description Pin Number MIC2568-0 Pin Number MIC2568-1 Pin Name 1, 3 / 15, 17 1, 3 / 15, 17 A / B VCC5 IN 2,26,28/12,14,16 2,26,28/12,14,16 A / B VCC OUT Pin Function 5V Nominal Supply Input: Optional supply, switchable to VCC and VPP outputs. VCC Output: 0V (ground), 3.3V, 5V, or high-impedance output. Pins 2, 26, and 28 must be externally connected. Pins 12, 14, and 16 must be externally connected. 4, 18 4, 18 GND 5 / 19 5 / 19 A / B VCC5 EN VCC 5V Enable (Input). 6 / 20 6 / 20 A / B VCC3 EN VCC 3.3V Enable (Input). 7 / 21 A / B EN0 7 / 21 8 / 22 A / B VPP_VCC A / B EN1 Ground. Enable 0: Micrel standard logic-control signal. MIC2568-0 only. VPP_VCC Control: Cirrus Logic logic-controller compatible control signal. MIC2568-1 only. Enable 1: Micrel standard logic-control signal. MIC2568-0 only. 8 / 22 A / B VPP_PGM Program: Cirrus Logic-compatible control signal. MIC2568-1 only. 24 / 10 24 / 10 A / B VPP OUT VPP Output: 0V (ground), 3.3V, 5V, or high-impedance output. 9, 11, 23, 25 9, 11, 23, 25 NC 27 / 13 27 / 13 A / B VCC3 IN MIC2568 Not internally connected. 3.3V Nominal Supply Input: Mandatory supply, switchable to VCC and VPP outputs. Also powers MIC2568 internal circuitry. 2 May 2003 MIC2568 Micrel Absolute Maximum Ratings (Note 1) Operating Ratings (Note 2) VCC5 IN [5V] Supply Voltage (VCC5 IN) .......................... +6V VCC3 IN [3.3V] Supply Voltage (VCC3 IN) ....................... +6V Logic Input Voltages (VCCx EN, VENx) ............ –0.3V to +6V Storage Temperature (TS) ....................... –65°C to +150°C Lead Temperature (5 sec.) ........................................ 260°C ESD Rating, Note 3 VCC5 IN [5V] Supply Voltage (VCC5 IN), Note 5 ............................................................ +4.5V to +5.5V VCC3 IN [3.3V] Supply Voltage (VCC3 IN), Note 6 ............................................................ +3.0V to +5.5V Ambient Temperature Range (TA) ............. –40°C to +85°C Junction Temperature (TJ) ....................... Internally Limited Thermal Resistance SSOP (θJA) .......................................................... 84°C/W TSSOP (θJA) ..................................................... 100°C/W Electrical Characteristics (Note 4) VCC3 IN = 3.3V, VCC5 IN = 5.0V; specified over operating temperature range of –40°C to +85°C. Symbol Parameter Conditions Min Typ Max Units VIH Logic-1 Input Voltage VCC3 IN = 3.0V to 5.5V 0.7VCC3 IN 5.5 V VIL Logic-0 Input Voltage VCC3 IN = 3.0V to 5.5V –0.3 0.3VCC3 IN V IIN Input Current 0V ≤ VIN ≤ 5.5V ±2 µA IPP OUT Hi-Z High Impedance Output Leakage Current Shutdown mode 0 ≤ VPP OUT = 0V 10 µA IPPSC Short Circuit Current Limit VPP OUT = 0V RO Switch Resistance VPP OUT = 5V selected, IPP OUT = –100mA (sourcing) 1.4 4 Ω VPP OUT = 3.3V selected, IPP OUT = –100mA (sourcing) 1.5 4 Ω 1300 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 Digital Inputs VPP Output 1 0.12 VPP OUT = 0V [ground] selected, IPP OUT = 50µA (sinking) 0.3 A VPP Switching Time (See Figure 1) t1 Output Turn-On Delay, Note 7 t2 t3 Output Rise Time, Note 7 t4 t5 Output Turnoff Fall Time, Note 7 t6 t7 t8 Output Turnoff Delay Time, Notes 7, 8 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 = 90% to 10% of 3.3V 50 1000 ns VPP OUT = 90% to 10% of 5V 50 1000 ns VPP OUT = 3.3V to Hi-Z 400 1000 ns VPP OUT = 5V to Hi-Z 400 1000 ns VCC Output ICCSC Short Circuit Current Limit VCC OUT = 0V, normal mode, VCC3 or VCC5 switches RO Switch Resistance VCC OUT = 3.3V selected, ICC OUT = –1A (sourcing) 120 180 mΩ VCC OUT = 5V selected, ICC OUT = –1A (sourcing) 90 135 mΩ 1800 3900 Ω VCC OUT = 0V [ground] selected, ICC OUT = 0.1mA (sinking) May 2003 3 1.0 1.5 A MIC2568 MIC2568 Symbol Micrel Parameter Conditions Min Typ Max Units 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) t9 Output Turn-On Delay Time, Note 9 t10 t11 Output Rise Time, Note 9 t12 t13 Output Fall Time, Note 9 t14 t15 Output Turnoff Delay, Notes 8, 9 t16 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 = 90% to 10% of 3.3V 100 300 1000 µs VCC OUT = 90% to 10% of 5.0V 100 600 2000 µs VCC OUT = 3.3V 0.65 2 ms VCC OUT = 5V 0.7 2 ms 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 Power Supply ICC5 VCC5 IN Supply Current (5V) Note 5 ICC3 VCC3 IN Supply Current (3.3V) Note 6 VCC OUT = 5V or 3.3V, ICC OUT = 0 Thermal Shutdown TSD Thermal Shutdown Temperature 140 °C Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. The device is not guaranteed to function outside its operating rating. Note 3. Devices are ESD sensitive. Handling precautions recommended. Note 4. Specification for packaged product only. Note 5. VCC5 IN is not required for operation. Note 6. VCC3 IN powers all internal logic, bias, and drive circuitry, and is required for operation. Note 7. RL = 1kΩ connected to ground. Note 8. Measurement is from the Hi-Z- or 0V-state command to the beginning of the slope. Measurement does not apply when device is in current limit or thermal shutdown. Note 9. RL = 10Ω connected to ground. MIC2568 4 May 2003 MIC2568 Micrel Output Timing Diagrams A B VPP Enable 0 VPP to 3.3V C t3 VPP OFF VPP to 5V t2 t5 VPP OUT D VPP OFF t6 t4 t7 t8 t1 5V 3.3V 0 Figure 1. VPP Timing Diagram VPP EN is shown generically. RL = 100Ω. Load capacitance is negligible. Refer to “MIC2568-0 Logic Table” for specific control logic input. At time A) VPP = 3.3V, B) VPP is disabled, C) VPP is programmed to 5V, D) VPP is disabled. A VCC Enable 0 B C D VCC to 3.3V VCC OFF VCC to 5V t9 t15 t10 t11 t13 t12 VCC OFF t16 t14 5V VCC 3.3V OUT 0 FLAG 0 Figure 2. VCC Timing Diagram VCC EN is shown generically. RL = 10Ω. Refer to “MIC2568-0 Logic Table” for specific control logic input. At time A) VCC is programmed to 3.3V, B) VCC is disabled, C) VCC is programmed to 5V, D) VCC is disabled. May 2003 5 MIC2568 MIC2568 Micrel MIC2568-0 Logic Table VCC5 EN VCC3 EN EN1 EN0 VCC OUT VPP OUT 0 0 0 0 0V* Hi-Z 0 0 0 1 0V* Hi-Z 0 0 1 0 0V* Hi-Z 0 0 1 1 0V* 0V* 0 1 0 0 3.3V Hi-Z 0 1 0 1 3.3V 3.3V 0 1 1 0 3.3V Hi-Z 0 1 1 1 3.3V 0V* 1 0 0 0 5V Hi-Z 1 0 0 1 5V 5V 1 0 1 0 5V Hi-Z 1 0 1 1 5V 0V* 1 1 0 0 3.3V Hi-Z 1 1 0 1 3.3V 3.3V 1 1 1 0 3.3V 5V 1 1 1 1 3.3V 0V* MIC2568-1 Logic Table MIC2568-1 control logic is compatible with the Cirrus Logic CL-PD6710 and CL-PD672x-series logic controllers. VCC5 EN VCC3 EN VPP_PGM VPP_VCC VCC OUT VPP OUT 0 0 0 0 0V* 0V* 0 0 0 1 0V* Hi-Z 0 0 1 0 0V* Hi-Z 0 0 1 1 0V* Hi-Z 0 1 0 0 5V 0V* 0 1 0 1 5V 5V 0 1 1 0 5V Hi-Z 0 1 1 1 5V Hi-Z 1 0 0 0 3.3V 0V* 1 0 0 1 3.3V 3.3V 1 0 1 0 3.3V Hi-Z 1 0 1 1 3.3V Hi-Z 1 1 0 0 0V* 0V* 1 1 0 1 0V* Hi-Z 1 1 1 0 0V* Hi-Z 1 1 1 1 0V* Hi-Z * clamped to ground MIC2568 6 May 2003 MIC2568 Micrel Functional Diagram A V CC3 IN 3.3V A V CC5 IN 5V Gate-Drive Charge Pump A EN1 A V PP OUT A EN0 Control Logic A V CC5 EN A V CC OUT A V CC3 EN Current Limit Thermal Shutdown Thermal Shutdown Current Limit B V CC3 EN B V CC OUT B V CC5 EN Control Logic B EN0 B V PP OUT B EN1 Gate-Drive Charge Pump MIC2568-0 GND May 2003 B V CC3 IN 3.3V 7 B V CC5 IN 5V MIC2568 MIC2568 Micrel protection, output currents are internally limited. For full system protection, long-term output short circuits (millisecond or longer) invoke overtemperature shutdown, protecting the MIC2568, system power supplies, card socket pins, and PC Card. Bypass Capacitors Applications Information PC Card power control for two sockets is easily accomplished using the Micrel MIC2568 PC Card/CardBus Slot Power Controller IC. Output Voltage Selection Four control bits per socket determine VCC and VPP output voltages and standby- or operate-mode conditions. Input logic threshold voltages are compatible with common PC Card logic controllers using either 3.3V or 5V supplies. The VCC outputs can be individually switched between 0V (ground) or 3.3V and 5V at the maximum allowable PC Card current. The VPP outputs can be individually switched between 0V (ground), 3.3V or 5V (VCC3 or VCC5 voltages), or high impedance. When VCC = 0V (ground) is selected, the MIC2568 goes into sleep mode and draws only nanoamperes of leakage current. Both VCC3 IN and VCC5 IN pins should be bypassed with 1µF low-ESR surface-mount ceramic capacitors mounted near the MIC2568 chip. Both VCC OUT and VPP OUT pins may use 0.01µF to 0.1µF capacitors for noise reduction and to reduce the chance of (electrostatic discharge) ESD damage. PC Card Slot Implementation Switching speeds are controlled to prevent damage to sensitive loads and meet all PC Card Specification timing requirements. VCC switches are turned on and off slowly. If commanded to switch directly from one VCC to the other (without first turning off and waiting 100ms), enhancement of the second switch begins only after the first is off (break-beforemake protection). Supply Input The MIC2568 is designed for PC Card applications, including the CardBus option, that do not require a 12V supply. When a memory card is initially inserted, it must receive a VCC voltage (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. Each card sends handshaking data to the logic controller which determines whether that card requires a VPP voltage and whether the card is designed for dual VCC voltages. If the card is compatible with, and requests, a different VCC level, the controller disables VCC, waits at least 100ms, and then enables the new VCC voltage. The MIC2568 itself is powered from the VCC3 IN pin (3.3Vnominal supply input). Bias its internal MOSFETs is generated by a charge pump quadrupler. Refer to “5V-Only VCC Application” and Figure 4 for information on using the MIC2568 without a 3.3V supply. Output Current and Protection The MIC2568 meets or exceeds all PCMCIA current specifications. Its switches are capable of passing the maximum current needed by any PC Card. For system and card If no card is inserted, or the system is in sleep mode, the logic controller outputs a (VCC3 EN, VCC5 EN) = (0, 0) to the MIC2568, which shuts down VCC. This also places the switch into its high-impedance output sleep mode. Basic VPP and VCC Switch Application Refer to Figure 3. A single system power supply feeds both slot-A and slot-B supply inputs. Although the PC Card specification defines two VPP outputs (VPP 1 and VPP 2) per card, they are usually connected together. System Power Supply (OPTIONAL) 5V 3.3V Address and data lines between logic controller and PCMCIA cards not shown. VPP1 A⁄BV CC3 IN A⁄BV CC5 IN A EN1 A V PP OUT A EN0 A V CC OUT A V CC5 EN Dual-Slot PC Card Logic Controller Slot A A V CC3 EN B EN1 MIC2568-0 Power Controller B EN0 B V PP OUT B V CC5 EN B V CC OUT B V CC3 EN GND VPP2 VCC PC Card A VCC Slot B VPP1 VPP2 VCC PC Card B VCC Motherboard Figure 3. Basic VPP and VCC Switch MIC2568 8 May 2003 MIC2568 Micrel 5V-Only VCC Application To use the MIC2568 in applications where only a single 5V VCC is available (no 3.3V VCC), connect VCC5 (5V supply) to the VCC3 IN pin. Refer to Figure 4. In this configuration, VCC OUT will be 5V when either VCC3 switch or VCC5 switch is enabled. System Power Supply 5V Slot A Address and data lines between logic controller and PCMCIA cards not shown. VPP1 A⁄BV CC3 A⁄BV CC5 IN A EN1 A V PP OUT A EN0 A V CC OUT A V CC5 EN Dual-Slot PC Card Logic Controller IN A V CC3 EN B EN1 MIC2568-0 Power Controller B EN0 B V PP OUT B V CC5 EN B V CC OUT B V CC3 EN GND VPP2 VCC PC Card A VCC Slot B VPP1 VPP2 VCC PC Card B VCC Motherboard Figure 4. 5V-Only VCC Application May 2003 9 MIC2568 MIC2568 Micrel Package Information 5.40 (0.213) 5.20 (0.205) 7.90 (0.311) 7.65 (0.301) DIMENSIONS: MM (INCH) 0.875 (0.034) REF 10.33 (0.407) 10.07 (0.396) 2.00 (0.079) 1.73 (0.068) 0.38 (0.015) 0.25 (0.010) 0.65 (0.0260) BSC 10° 4° 0.21 (0.008) 0.05 (0.002) COPLANARITY: 0.10 (0.004) MAX 0.22 (0.009) 0.13 (0.005) 1.25 (0.049) REF 0° –8° 0.95 (0.037) 0.55 (0.022) 28-Pin SSOP (SM) DIMENSIONS: MM (INCH) 4.50 (0.177) 6.40 BSC (0.252) 4.30 (0.169) 0.30 (0.012) 0.19 (0.007) 9.80 (0.385) 9.60 (0.378) 0.65 BSC (0.026) 1.20 MAX (0.043) 0.15 (0.006) 0.05 (0.002) 0.20 (0.008) 0.09 (0.003) 0.75 (0.029) 0.45 (0.018) 8° 0° 28-Pin TSSOP (TS) MICREL, INC. TEL 1849 FORTUNE DRIVE SAN JOSE, CA 95131 + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB USA 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. © 2003 Micrel, Incorporated. MIC2568 10 May 2003