MIC2566 Micrel MIC2566 Single-Slot PC Card/CardBus Power Controller Preliminary General Description Features 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 0.3µA. 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 MIC2566 is available in 14-pin SOP and TSSOP packages. • • • • • • • • • • • • 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 Applications • • • • • • • • • • 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 Typical Application 5V System Power Supply 3.3V VCC3IN VCC5 IN (optional) VPP1 EN0 VPP2 EN1 PCMCIA Card Slot MIC2566 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 May 2003 1 MIC2566 MIC2566 Micrel Ordering Information Part Number Operating Temp. Range Package MIC2566-0BM –40°C to +85°C 14-pin SOP MIC2566-1BM –40°C to +85°C 14-pin SOP MIC2566-0YM –40°C to +85°C 14-pin SOP X MIC2566-1YM –40°C to +85°C 14-pin SOP X MIC2566-0BTS –40°C to +85°C 14-pin TSSOP MIC2566-1BTS –40°C to +85°C 14-pin TSSOP Pb-Free Pin Configuration VCC5_EN VCC3_EN EN 0 EN 1 /FLAG NC VPP OUT 1 2 3 4 5 6 7 * 14 13 12 11 10 9 * 8 GND VCC5_EN VCC5 IN VCC OUT VCC3_EN VPP Ð VCC VPP Ð PGM /FLAG NC VPP OUT VCC5 IN VCC OUT VCC3 IN VCC OUT MIC2566-0 1 2 3 4 5 6 7 * 14 13 12 11 10 9 * 8 GND VCC5 IN VCC OUT VCC5 IN VCC OUT VCC3 IN VCC OUT MIC2566-1 * 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 Pin Number MIC2566-1 Pin Name 1 1 VCC5 EN VCC 5V Enable (Input). 2 2 VCC3 EN VCC 3.3V Enable (Input). 3 EN0 3 4 VPP_VCC EN1 Pin Function 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. 4 VPP_PGM 5 5 /FLAG 6 6 NC 7 7 VPP OUT VPP Output: 0V (ground), 3.3V, 5V, or high-impedance output. 9 9 VCC3 IN 3.3V-Nominal Supply Input: Mandatory supply, switchable to VCC and VPP outputs. Also powers MIC2566 internal circuitry. 8, 10, 12 8, 10, 12 VCC OUT VCC Output: 0V (ground), 3.3V, 5V, or high-impedance output. Pins 8, 10, and 12 must be externally connected. 11, 13 11, 13 VCC5 IN 14 14 GND MIC2566 Program: Cirrus Logic-compatible control signal. MIC2566-1 only. Error Flag: This pin requires a pull-up resistor (10kΩ recommended) to VCC3IN or VCC5IN. Not internally connected. 5V-Nominal Supply Input: Optional supply, switchable to VCC and VPP outputs. Pins 11 and 13 must be externally connected. Ground. 2 May 2003 MIC2566 Micrel Absolute Maximum Ratings (Note 1) Operating Ratings (Note 2) 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 ≤ 25°C (PD) ....... Internally Limited Storage Temperature ............................... –65°C to +150°C Lead Temperature (5 sec.) ...................................... +260°C ESD Rating, Note 3 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) ......................... –40°C to +85°C Junction Temperature (TJ) ...................................... +125°C Package Thermal Resistance (θJA) SOP ................................................................. 90°C/W TSSOP ............................................................ 83°C/W Electrical Characteristics (Note 4) Specified over operating ambient temperature range of –40°C to +85°C 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 Logic 1 Input Voltage 0.7xVCC3IN 5.5 V VIL Logic 0 Input Voltage –0.3 0.3xVCC3IN V IIN Input Current 0 V < VIN < 5.5V ±2 µA IPP OUT Hi-Z High Impedance Output Leakage Current Shutdown Mode 0 ≤ VPP OUT ≤ 5V 10 µA IPPSC Short Circuit Current Limit VPP OUT = 0V RO Switch Resistance Select VPP OUT = 5V Select VPP OUT = 3.3V IPP OUT = –100mA (Sourcing) RO Switch Resistance, Select VPP OUT = 0V Select VPP OUT = clamped to ground IPP OUT = 50µA (Sinking) VPP OUTPUT 1 0.12 0.4 A 1.4 1.5 3 4 Ω Ω 1300 3900 Ω 5 10 50 50 µs µs 200 300 800 1000 µs µs VPP SWITCHING TIME (See Figure 1) t1 t2 Output Turn-On Delay Note 5 VPP OUT = Hi-Z to 10% of 3.3V VPP OUT = Hi-Z to 10% of 5V t3 t4 Output Rise Time Note 5 VPP OUT = 10% to 90% of 3.3V VPP OUT = 10% to 90% of 5V t5 t6 Output Turn-Off Delay Time Note 5 VPP OUT = 3.3V to Hi-Z VPP OUT = 5V to Hi-Z 400 400 1000 1000 ns ns t7 t8 Output Turn-Off Fall Time Note 5 VPP OUT = 90% to 10% of 3.3V VPP OUT = 90% to 10% of 5V 50 50 1000 1000 ns ns ICCSC Short Circuit Current Limit VCC OUT = 0V RO Switch Resistance Select VCC OUT = 3.3V ICC OUT = –1A (Sourcing) 120 180 mΩ Select VCC OUT = 5V ICC OUT = –1A (Sourcing) 90 135 mΩ 1800 3900 Ω 100 100 VCC OUTPUT Select VCC OUT = clamped to ground ICC OUT = 1mA (Sinking) May 2003 3 1 1.5 A MIC2566 MIC2566 Micrel Electrical Characteristics (continued) Symbol Parameter Condition Min Typ Max Units 200 350 1500 3000 µs VCC SWITCHING TIME (See Figure 2) t9 t10 Output Turn On Delay Time Note 6 VCC OUT = 0V to 10% of 3.3V VCC OUT = 0V to 10% of 5.0V t11 Output Rise Time Note 6 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 0.65 2 ms VCC OUT = 5V 0.7 2 ms t12 Output Turn-Off Delay Notes 6, 7 t13 t14 t15 Output Fall Time Note 6 t16 VCC OUT = 90% to 10% of 3.3V 100 300 1000 µs VCC OUT = 90% to 10% of 5.0V 100 600 2000 µs POWER SUPPLY ICC5 VCC5 IN Supply Current (5V) VCC OUT = 5V or 3.3V, ICC OUT = 0 VCC OUT = 0V (Sleep Mode) 8 0.2 50 10 µA µA ICC3 VCC3 IN Supply Current (3.3V) Note 8 VCC OUT = 5V or 3.3V, ICC OUT = 0 VCC OUT = 0V (Sleep Mode) 40 0.1 100 10 µA µA VCC5 Operating Input Voltage (5V) VCC5 IN not required for operation 5.0 5.5 V VCC3 Operating Input Voltage (3.3V) Note 8 3.3 5.5 V 3.0 THERMAL SHUTDOWN TSD Thermal Shutdown Temperature °C 130 FLAG OUTPUT IFLAGLK Error FLAG Off Current VFLAG = 5V VOL FLAG Output Low Voltage VCCx IN – VCC OUT > 1V 1mA pull-up from FLAG to VCCx IN 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. Human body model, 1.5k in series with 100pF. Note 4. Specification for packaged product only. Note 5. RL = 100Ω connected to ground. 4 µA 0.4 V Note 6. RL = 10Ω connected to ground. Note 7. Delay from commanding Hi Z or 0V to beginning slope. Does not apply to current limit or overtemperature shutdown conditions. Note 8. 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. MIC2566 4 May 2003 MIC2566 Micrel Timing Diagram A B VPP Enable 0 C VPP to 3.3V t3 VPP OFF VPP to 5V t2 t5 VPP OUT D VPP OFF t6 t4 t7 t8 t1 5V 3.3V 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 = 100Ω for all measurements. Load capacitance is negligible. A VCC Enable 0 B VCC to 3.3V C VCC OFF t9 5V t11 t15 D VCC to 5V VCC OFF t10 t16 t12 t14 t13 3.3V VCC OUT 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 = 100Ω. FLAG pull-up resistor is 10kΩ to VCC3 IN. May 2003 5 MIC2566 MIC2566 Micrel MIC2566-0 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 1 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 3.3 3.3 3.3 3.3 5 5 5 5 3.3 3.3 3.3 3.3 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 VCC3_EN VPP_PGM VPP_VCC VCC OUT VPP OUT 0 0 0 0 0 0 0 1 Clamped to Ground Clamped to Ground Clamped to Ground High Z 0 0 0 0 0 0 1 0 0 1 1 1 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 Clamped to Ground Clamped to Ground 5 5 5 5 3.3 High Z High Z Clamped to Ground 5 High Z High Z Clamped to Ground 1 1 1 1 1 1 1 0 0 0 1 1 1 1 0 1 1 0 0 1 1 1 0 1 0 1 0 1 3.3 3.3 3.3 Clamped to Ground Clamped to Ground Clamped to Ground Clamped to Ground 3.3 High Z High Z Clamped to Ground High Z High Z High Z MIC2566 6 May 2003 MIC2566 Micrel 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 May 2003 7 MIC2566 MIC2566 Micrel 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. 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. 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. 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 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. 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. 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 MIC2566 8 May 2003 MIC2566 Micrel System Power Supply 5V VCC3IN VCC5IN VPP1 EN0 VPP2 EN1 PCMCIA Card Slot 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. May 2003 9 MIC2566 MIC2566 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) 3°–6° 0.244 (6.20) 0.228 (5.80) 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) 0.20 (0.008) 0.09 (0.003) 1.10 MAX (0.043) 0.65 BSC (0.026) 1.00 (0.039) REF 8° 0° 0.15 (0.006) 0.05 (0.002) 0.70 (0.028) 0.50 (0.020) 14-Pin TSSOP 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. MIC2566 10 May 2003