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| IMP252 4/2 7 POWER MANAGEMENT ADVANCE PRODUCT INFORMATION Key Features N N N N N N N N N USB Rev. 1.1 and 2.0 Compliant Four independent switches 2.7V to 5.5V input operation Low MOSFET ON resistance - IMP2524: 0.1, 0.14 maximum - IMP2527: 0.2, 0.3 maximum 500mA continuos load current per switch Low supply current - 110A ON-state current, 0.75A OFF-state current 1.25A maximum current limit, 750mA typical Thermal shutdown 2.4V undervoltage lockout (UVLO) Open-drain flag output - Undervoltage - Current limit - Thermal shutdown Output can be force higher than input Active HIGH(-1) and active LOW(-2) enable 16-pin SO and DIP packages, Die available Pin compatible with the Micrel MIC2524 and MIC2527 Quad USB High-Side Power Switch with Fault Detection The IMP2524 and IMP2527 are complete power management solutions for bus-powered and self-powered USB hubs. Each device contains four independent power switches and fault detection logic. The IMP2524 channel resistance is a low 140m maximum and the IMP2527 channel resistance is 300 maximum. Both device operate with voltage inputs from 2.7V to 5.5V The IMP2524/2527 conform to the new USB 1.1 standard. Fault current is limited to 750mA typically, and a flag output for each switch conveys fault information to the local USB controller. The IMP252x "Soft-Start" function ramps the ON-current to eliminate any excessive voltage drop on the input side that could occur when capacitive loads are charged. Self-monitoring features include thermal shutdown to prevent catastrophic switch failure from high-current loads and undervoltage lockout (UVLO) that insures that the device remains OFF unless there is sufficient supply voltage present. The switch Enable input logic can interface with both 3.3V and 5V logic. Both active-HIGH (-1 devices) and active-LOW (-2 devices) enable logic versions are available. Supply current is a low 0.75A when disabled and just 110A when enabled The quad IMP2524/7 devices are available in 16-pin DIP and 16-pin SO packages and are pin compatible replacements for the Micrel MIC2524-1/-2 and MIC2527-1/2 devices. IMP offers a complete family of USB power management products. For single-switch applications see the IMP2525 and IMP2525A data sheets. The single-switch IMP2525A features a 0.07 switch resistance. For dual-switch applications, refer to the IMP2526 data sheet. N N N N Applications N USB host and self-powered hubs N USB video monitors N USB printers VBUS Typical Application IMP2527 5.1V 3% 5V 1% or IMP2524 5V 3% 4.7mF Ferrite Bead 10k 27k 2 1 3 4 5 6 IMP2524 IMP2527 ENA ENB INA/B OUTA 16 15 14 13 12 11 10 9 33mF* + D+ 0.01mF D- GND + IN OUT LDO GND V+ ON/OFF OVERCURRENT USB Controller D+ D- 1mF GND FLGA INC/D FLGB OUTB ENC OUTC FLGC OUTD END FLGD GND GND Downstream USB Port 1 500mA max. 0.1mF 33mF* VBUS + D+ 0.01mF D- GND VBUS Data 7 8 Downstream USB Port 2 500mA max. 33mF* Bold/Blue lines indicate 0.1" wide, 1-oz. copper high-current traces. *33mF, 16V tantalum or 100mF, 10V electrolytic per port + D+ 0.01mF D- GND VBUS Downstream USB Port 3 500mA max. 33mF* + D+ 0.01mF D- GND Downstream USB Port 4 500mA max. 2524/27_01.eps (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com 1 IMP252 4/2 7 Pin Configuration SO/DIP FLGA ENA OUTA GND INC/D OUTC ENC FLGC 1 2 3 4 5 6 7 8 IMP2524/27 16 FLGB 15 ENB 14 OUTB 13 INA/B 12 GND 11 OUTD 10 END 9 FLGD 2524/27_02.eps FLGA ENA FLGB ENB 1 2 16 15 3 Logic, Charge Pump Logic, Charge Pump IMP2524/27 OUTA 13 INA/B 14 6 OUTB OUTC ENC FLGC FLGD END 7 8 9 10 Logic, Charge Pump Logic, Charge Pump 4 GND 12 GND 5 INC/D 11 OUTD Pin Descriptions Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2524/27_03.eps Name FLGA ENA OUTA GND INC/D OUTC ENC FLGC FLGD END OUTD GND INA/B OUTB ENB FLGB Function Fault Flag A output. This open-drain output goes into an active-LOW state in response to undervoltage, current limit or thermal shutdown conditions. Enable A Input. This pin is the Channel B MOSFET switch driver control logic input. Both active-HIGH (-1 suffix) and active-LOW (-2 suffix) logic devices are available. Channel-A switch output (MOSFET Source). The output pin drives the load into ON and OFF states. Ground. Power supply return for the internal circuitry of the IC. Connect both pins 4 and 6 together. Channel C and D positive power supply input voltage. This is the switching MOSFET drain connection. It is the channel C and channel D supply voltage input for the logic and the charge-pump circuit. Channel-C switch output (MOSFET Source). The output pin drives the load into ON and OFF states. Enable C Input. This pin is the Channel B MOSFET switch driver control logic input. Both active-HIGH (-1 suffix) and active-LOW (-2 suffix) logic devices are available. Fault Flag C output. This open-drain output goes into an active-LOW state in response to undervoltage, current limit or thermal shutdown conditions. Fault Flag D output. This open-drain output goes into an active-LOW state in response to undervoltage, current limit or thermal shutdown conditions. Enable D Input. This pin is the Channel B MOSFET switch driver control logic input. Both active-HIGH (-1 suffix) and active-LOW (-2 suffix) logic devices are available. Channel-D switch output (MOSFET Source). The output pin drives the load into ON and OFF states. Ground. Power supply return for the internal circuitry of the IC. Connect both pins 4 and 6 together. Channel A and B positive power supply input voltage. This is the switching MOSFET drain connection. It is the channel A and channel B supply voltage input for the logic and the charge-pump circuit. Channel-B switch output (MOSFET Source). The output pin drives the load into ON and OFF states. Enable B Input. This pin is the Channel-B MOSFET switch driver control logic input. Both active-HIGH (-1 suffix) and active-LOW (-2 suffix) logic devices are available. Fault Flag B output. This open-drain output goes into an active-LOW state in response to undervoltage, current limit or thermal shutdown conditions. 2524/27t01 Ordering Information Pin Number IMP2524-1BWM IMP2524-2BWM IMP2524-1BN IMP2524-2BN IMP2527-1BWM IMP2527-2BWM IMP2527-1BN IMP2527-2BN Enable Logic Active HIGH Active LOW Active HIGH Active LOW Active HIGH Active LOW Active HIGH Active LOW Typical "ON" Resistance 100m 100m 100m 100m 200m 200m 200m 200m 408-432-9100/www.impweb.com Temperature Range -40 -40 -40 -40 -40 -40 -40 -40 C to +85 C to +85 C to +85 C to +85 C to +85 C to +85 C to +85 C to +85 C C C C C C C C Pins-Package 16-SO 16-SO 16-DIP 16-DIP 16-SO 16-SO 16-DIP 16-DIP 2524/27t02 2 (c) 1999 IMP, Inc. IMP252 4/2 7 Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . +8.0V Fault Flag Voltage . . . . . . . . . . . . . . . . . . . . . . +8.0V Fault Flag Current . . . . . . . . . . . . . . . . . . . . . . 50mA Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . +8.0V Output Current . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited Enable Input . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 12V Storage Temperature . . . . . . . . . . . . . . . . . . . . . -65C to +150C Lead Temperature (Soldering, 5 sec.) . . . . . . . 260C Package Thermal Resistance SO (JA ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160C/W DIP(JA ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130C/W Note: All voltages are referenced to GND. These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. Electrical Characteristics Unless otherwise noted, VIN = 5V and TA = 25C. Parameter Supply Voltage Range Operating Temperature Range Supply Current Switch OFF Supply Current Switch ON Enable Input Threshold Enable Input Current Enable Input Capacitance Switch ON Resistance Continuous Load Current Output Turn-On Delay Output Turn-On Rise Time Output Turn-Off Delay Output Turn-Off Fall Time Output Leakage Current Short-circuit Current Limit Overtemperature Shutdown Threshold Error Flag Output Resistance Error Flag Output Current UVLO Threshold Symbol Conditions VIN TA IIN OFF Switch OFF, No load VENOFF 0.8V, VENON 2.4V IMP2524/27-1 VENON 0.8V, VENOFF 2.4V IMP2524/27-2 Switch ON, No load VENOFF 0.8V, VENON 2.4V IMP2524/27-1 VENON 0.8V, VENOFF 2.4V IMP2524/27-2 LOW to HIGH ("0" to "1") Enable Voltage, Note 1 HIGH to LOW ("1" to "0") Enable Voltage, Note 1 VEN = 2.4V VEN = 0.8V CEN RON IL TDON TRON TDOFF TFOFF IOFF ISC TJ increasing TJ decreasing RFLAG IFLAG VUVLO VIN = 5V, IL = 10mA VIN = 3.3V, IL = 10mA VFLAG = 5V VIN Increasing VIN Decreasing IMP2524: IOUT = 500mA each switch IMP2527: IOUT = 500mA each switch Each output RL = 10 each output RL = 10 each output RL = 10 each output RL = 10 each output TA = - 40C to +85C Min 2.7 - 40 Typ Max 5.5 85 Units V C A 0.75 10 IIN ON 110 320 A VENH VENL IEN 2.1 0.8 1.9 0.01 0.01 1 0.10 0.20 0.5 0.25 1 1 1 0.50 0.75 135 125 10 15 0.01 2.5 2.3 2.4 1 1 V A pF 0.14 0.30 A ms ms 20 20 10 1.25 s s A A C 1 A V Notes 1. Switch OFF is VEN 0.8V and Switch ON is VEN 2.4V for the IMP2524/27-1. Switch OFF is VEN 2.4V and Switch ON is VEN 0.8V for the IMP2524/27-2. The Enable input has approximately 200mV of hysteresis. (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com 3 IMP252 4/2 7 Package Dimensions Plastic DIP (16-Pin) D1 N Inches Min Max 0.200 ---- -- 0.175 0.022 0.065 0.012 0.765 0.080 0.325 0.310 ---- -- ---- -- 0.400 0.150 Millimeters Min ---- -- 0.38 3.18 0.41 1.14 0.20 18.92 0.13 7.62 6.10 2.54 7.62 ---- -- 2.92 Max 5.08 ---- -- 4.45 0.56 1.65 0.30 19.43 2.03 8.26 7.87 ---- -- ---- -- 10.16 3.81 Plastic DIP (16-Pin)* E1 E D A2 A A1 L e B B1 0-15 C eA eB Plastic DIP (16-Pin).eps SO (16-Pin) A A1 A2 B B1 C D D1 E E1 e eA eB L ---- -- 0.015 0.125 0.016 0.045 0.008 0.745 0.005 0.300 0.240 0.100 0.300 ---- -- 0.115 SO (16-Pin)** A 0.926 0.1043 A1 0.0040 0.0118 B 0.013 0.020 C 0.0091 0.0125 D 0.3977 0.4133 E 0.2914 0.2662 e 0.050 BSC H 0.394 0.419 L 0.016 0.050 * JEDEC Drawing MO-058AB ** JEDEC Drawing MS-013AA 2.35 2.65 0.10 0.30 0.33 0.51 0.23 0.32 10.10 10.50 7.40 7.60 1.27 BSC 10.00 10.65 0.40 1.27 2524/26_t03.at3 E H D 0- 8 A C e B A1 L 16-Pin (SO).eps IMP, Inc. Corporate Headquarters 2830 N. First Street San Jose, CA 95134-2071 Tel: 408-432-9100 Tel: 800-438-3722 Fax: 408-434-0335 e-mail: info@impinc.com http://www.impweb.com The IMP logo is a registered trademark of IMP, Inc. All other company and product names are trademarks of their respective owners. (c) 1999 IMP, Inc. Printed in USA Publication #: 5005 Revision: B Issue Date: 05/17/00 Type: Preliminary |
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