IMP2525-1BM | DigiCamel IC Datasheet

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IMP2524 A1PROS | Alldatasheet

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Technical content

408-432-9100/www.impweb.com IMP252IMP252 4/24/277 Quad USB High-Side Power Switch with Fault Detection IMP2525IMP2525 USB High-Side Power Switch IMP2525AIMP2525A Low-Resistance, USB High-Side Power Switch IMP2526IMP2526 Dual USB High-Side Power Switch

USB PUSB P oo ww er Switcer Switc h Prh Pr oduct Guideoduct Guide 408-432-9100/www.impweb.com © 2000 IMP , Inc. 6 Product Selection Guide rebmuNtraPe pyTe gakcaP "NO"hctiwS ecnatsiseR elbanE cigoL egatlovrednU tuokcoL tnerruC timiL lamrehT nwodtuhSg alFtluaF MWB1-4252PMI dauQO S,nip-610 . 41 Ω HGIH • ••• MWB2-4252PMI dauQO S,nip-610 . 41 Ω WOL • ••• NB1-4252PMI dauQP ID,nip-610 . 41 Ω HGIH • ••• NB2-4252PMI dauQP ID,nip-610 . 41 Ω WOL • ••• MB1-A5252PMI elgniSO S,nip-80 70.0 Ω HGIH • ••• MB2-A5252PMI elgniSO S,nip-80 70.0 Ω WOL • ••• NB1-A5252PMI elgniSP ID,nip-80 70.0 Ω HGIH • ••• NB2-A5252PMI elgniSP ID,nip-80 70.0 Ω WOL • ••• MB1-5252PMI elgniSO S,nip-84 1.0 Ω HGIH • ••• MB2-5252PMI elgniSO S,nip-84 1.0 Ω WOL • ••• NB1-5252PMI elgniSP ID,nip-84 1.0 Ω HGIH • ••• NB2-5252PMI elgniSP ID,nip-84 1.0 Ω WOL • ••• MB1-6252PMI lauDO S,nip-84 1.0 Ω HGIH • ••• MB2-6252PMI lauDO S,nip-84 1.0 Ω WOL • ••• NB1-6252PMI lauDP ID,nip-84 1.0 Ω HGIH • ••• NB2-6252PMI lauDP ID,nip-84 1.0 Ω WOL • ••• MWB1-7252PMI dauQO S,nip-610 . 03 Ω HGIH • ••• MWB2-7252PMI dauQO S,nip-610 . 03 Ω WOL • ••• NB1-7252PMI dauQP ID,nip-610 . 03 Ω HGIH • ••• NB2-7252PMI dauQP ID,nip-610 . 03 Ω WOL • ••• 10LESBSU All devices are pin-compatible with the MIC2525/2526 devices. Compared to the Micrel MIC2525, the enhanced IMP2525A has a 50% lower "ON" resistance. Product Cross Reference Guide rebmuNtraPlerciMr ebmuNtraPPMIe pyTe gakcaPe cnatsiseR"NO"hctiwS CIMM WB1-4252 MWB1-4252PMI dauQO S,nip-610 . 41 Ω CIMM WB2-4252 MWB2-4252PMI dauQO S,nip-610 . 41 Ω CIMN B1-4252 NB1-4252PMI dauQP ID,nip-610 . 41 Ω CIMN B2-4252 NB2-4252PMI dauQP ID,nip-610 . 41 Ω MB1-A5252CIM MB1-A5252PMI elgniSO S,nip-80 70.0 Ω 41.0.sv Ω 5252lerciMrof MB2-A5252CIM MB2-A5252PMI elgniSO S,nip-80 70.0 Ω 41.0.sv Ω 5252lerciMrof NB1-A5252CIM NB1-A5252PMI elgniSP ID,nip-80 70.0 Ω 41.0.sv Ω 5252lerciMrof NB2-A5252CIM NB2-A5252PMI elgniSP ID,nip-80 70.0 Ω 41.0.sv Ω 5252lerciMrof MB1-5252CIM MB1-5252PMI elgniSO S,nip-84 1.0 Ω MB2-5252CIM MB2-5252PMI elgniSO S,nip-84 1.0 Ω NB1-5252CIM NB1-5252PMI elgniSP ID,nip-84 1.0 Ω NB2-5252CIM NB2-5252PMI elgniSP ID,nip-84 1.0 Ω MB1-6252CIM MB1-6252PMI lauDO S,nip-84 1.0 Ω MB2-6252CIM MB2-6252PMI lauDO S,nip-84 1.0 Ω NB1-6252CIM NB1-6252PMI lauDP ID,nip-84 1.0 Ω NB2-6252CIM NB2-6252PMI lauDP ID,nip-84 1.0 Ω MWB1-7252CIM MWB1-7252PMI dauQO S,nip-610 . 03 Ω MWB2-7252CIM MWB2-7252PMI dauQO S,nip-610 . 03 Ω NB1-7252CIM NB1-7252PMI dauQP ID,nip-610 . 03 Ω NB2-7252CIM NB2-7252PMI dauQP ID,nip-610 . 03 Ω 20ferXBSU

Applications

N USB host and self-powered hubs N USB video monitors N USB printers N USB Rev. 1.1 and 2.0 Compliant N Four independent switches N 2.7V to 5.5V input operation N Low MOSFET ON resistance – IMP2524: 0.1Ω, 0.14Ω maximum – IMP2527: 0.2Ω, 0.3Ω maximum N 500mA continuos load current per switch N Low supply current – 110µA ON-state current, 0.75µA OFF-state current N 1.25A maximum current limit, 750mA typical N Thermal shutdown 2.4V undervoltage lockout (UVLO) N Open-drain flag output – Undervoltage – Current limit – Thermal shutdown N Output can be force higher than input N Active HIGH(-1) and active LOW(-2) enable N 16-pin SO and DIP packages, Die available N Pin compatible with the Micrel MIC2524 and MIC2527 Typical Application Quad USB High-Side PQuad USB High-Side Poowwerer SwitcSwitch with with Fh Fault Detault Detectionection 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 Ω maximum and the IMP2527 channel resistance is 300 Ω 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 0.75µA when disabled and just 110µA 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 0.07Ω switch resistance. For dual-switch applications, refer to the IMP2526 data sheet. Data Ferrite Bead INA/B INC/D OUTA OUTB OUTC OUTD GND GND ENA FLGA ENB FLGB ENC FLGC END FLGD IMP2524 IMP2527 USB Controller ON/OFF OVERCURRENTLDO OUTIN GND GND 27k 1/K6D F 0.01/K6D F 0.1/K6D F 10k 2524/27_01.eps 33/K6D F* GND D+ Downstream USB Port 1 500mA max. V BUS IMP2527 5.1V /KB1 3% 5V /KB1 1% or IMP2524 5V /KB1 3% 0.01/K6D F33/K6D F* GND D+ Downstream USB Port 2 500mA max. V BUS 4.7/K6D F + 0.01/K6D F33/K6D F* GND D+ Downstream USB Port 3 500mA max. V BUS 0.01/K6D F33/K6D F* GND D+ Downstream USB Port 4 500mA max. V BUS Bold/Blue lines indicate 0.1" wide, 1-oz. copper high-current traces. *33/K6D F, 16V tantalum or 100/K6D F, 10V electrolytic per port Key Features

Ordering Information

13 INA/B

14 OUTB

15 ENB

16 FLGB

9 FLGD

10 END

11 OUTD

12 GND

2524/27_02.eps IMP2524/27 SO/DIP 2524/27_03.eps OUTA3 INA/B GND GND FLGA ENA

1 Logic,

FLGB 16 Logic, Charge Pump OUTC6 INC/D5FLGC 8 ENC 7 Logic, Charge Pump OUTD11END 10 FLGD 9 Logic, Charge Pump IMP2524/27 rebmuNniPe maNn oitcnuF 1A GLF -rednuotesnopsernietatsWOL-evitcanaotniseogtuptuoniard-neposihT.tuptuoAgalFtluaF .snoitidnocnwodtuhslamrehtrotimiltnerruc,egatlov 2A NE HGIH-evitcahtoB.tupnicigollortnocrevirdhctiwsTEFSOMBlennahCehtsinipsihT.tupnIAelbanE .elbaliavaerasecivedcigol)xiffus2-(WOL-evitcadna)xiffus1-( 3A TUO .setatsFFOdnaNOotnidaolehtsevirdniptuptuoehT.)ecruoSTEFSOM(tuptuohctiwsA-lennahC 4D NG .rehtegot6dna4sniphtobtcennoC.CIehtfoyrtiucriclanretniehtrofnruterylppusrewoP.dnuorG 5D /CNI .noitcennocniardTEFSOMgnihctiwsehtsisihT.egatlovtupniylppusrewopevitisopDdnaClennahC .tiucricpmup-egrahcehtdnacigolehtroftupniegatlovylppusDlennahcdnaClennahcehtsitI 6C TUO .setatsFFOdnaNOotnidaolehtsevirdniptuptuoehT.)ecruoSTEFSOM(tuptuohctiwsC-lennahC 7C NE HGIH-evitcahtoB.tupnicigollortnocrevirdhctiwsTEFSOMBlennahCehtsinipsihT.tupnICelbanE .elbaliavaerasecivedcigol)xiffus2-(WOL-evitcadna)xiffus1-( 8C GLF -rednuotesnopsernietatsWOL-evitcanaotniseogtuptuoniard-neposihT.tuptuoCgalFtluaF .snoitidnocnwodtuhslamrehtrotimiltnerruc,egatlov 9D GLF -rednuotesnopsernietatsWOL-evitcanaotniseogtuptuoniard-neposihT.tuptuoDgalFtluaF .snoitidnocnwodtuhslamrehtrotimiltnerruc,egatlov 01D NE HGIH-evitcahtoB.tupnicigollortnocrevirdhctiwsTEFSOMBlennahCehtsinipsihT.tupnIDelbanE .elbaliavaerasecivedcigol)xiffus2-(WOL-evitcadna)xiffus1-( 11D TUO .setatsFFOdnaNOotnidaolehtsevirdniptuptuoehT.)ecruoSTEFSOM(tuptuohctiwsD-lennahC 21D NG .rehtegot6dna4sniphtobtcennoC.CIehtfoyrtiucriclanretniehtrofnruterylppusrewoP.dnuorG 31B /ANI .noitcennocniardTEFSOMgnihctiwsehtsisihT.egatlovtupniylppusrewopevitisopBdnaAlennahC .tiucricpmup-egrahcehtdnacigolehtroftupniegatlovylppusBlennahcdnaAlennahcehtsitI 41B TUO .setatsFFOdnaNOotnidaolehtsevirdniptuptuoehT.)ecruoSTEFSOM(tuptuohctiwsB-lennahC 51B NE HGIH-evitcahtoB.tupnicigollortnocrevirdhctiwsTEFSOMB-lennahCehtsinipsihT.tupnIBelbanE .elbaliavaerasecivedcigol)xiffus2-(WOL-evitcadna)xiffus1-( 61B GLF -rednuotesnopsernietatsWOL-evitcanaotniseogtuptuoniard-neposihT.tuptuoBgalFtluaF .snoitidnocnwodtuhslamrehtrotimiltnerruc,egatlov 10t72/4252 rebmuNniPc igoLelbanEe cnatsiseR”NO“lacipyTe gnaRerutarepmeTe gakcaP-sniP MWB1-4252PMIH GIHevitcAm 001 Ω C°58+otC°04– OS-61 MWB2-4252PMIW OLevitcAm 001 Ω C°58+otC°04– OS-61 NB1-4252PMIH GIHevitcAm 001 Ω C°58+otC°04– PID-61 NB2-4252PMIW OLevitcAm 001 Ω C°58+otC°04– PID-61 MWB1-7252PMIH GIHevitcAm 002 Ω C°58+otC°04– OS-61 MWB2-7252PMIW OLevitcAm 002 Ω C°58+otC°04– OS-61 NB1-7252PMIH GIHevitcAm 002 Ω C°58+otC°04– PID-61 NB2-7252PMIW OLevitcAm 002 Ω C°58+otC°04– PID-61 20t72/4252

Electrical Characteristics

Package Thermal Resistance SO (θ 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. Parameter Symbol ConditionsMin Typ Max Units Supply Voltage Range V IN TA = – 40°C to +85°C 2.7 5.5 V Operating Temperature Range T A – 40 85 °C Supply Current I IN OFF Switch OFF, No load 0.75 10 µA Switch OFF V ENOFF ≤ 0.8V, VENON ≥ 2.4V IMP2524/27-1 VENON ≤ 0.8V, VENOFF ≥ 2.4V IMP2524/27-2 Supply Current I IN ON Switch ON, No load 110 320 µA Switch ON V ENOFF ≤ 0.8V, VENON ≥ 2.4V IMP2524/27-1 VENON ≤ 0.8V, VENOFF ≥ 2.4V IMP2524/27-2 Enable Input Threshold V ENH LOW to HIGH (“0” to “1”) Enable Voltage, Note 1 2.1 2.4 V VENL HIGH to LOW (“1” to “0”) Enable Voltage, Note 1 0.8 1.9 Enable Input Current I EN VEN = 2.4V 0.01 1 µA VEN = 0.8V 0.01 1 Enable Input Capacitance C EN 1p F Switch ON Resistance R ON IMP2524: IOUT = 500mA each switch 0.10 0.14 Ω IMP2527: IOUT = 500mA each switch 0.20 0.30 Continuous Load Current I L Each output 0.5 A Output Turn-On Delay T DON RL = 10Ω each output 0.25 ms Output Turn-On Rise Time T RON RL = 10Ω each output 1 ms Output Turn-Off Delay T DOFF RL = 10Ω each output 1 20 µs Output Turn-Off Fall Time T FOFF RL = 10Ω each output 1 20 µs Output Leakage Current I OFF 10 µA Short-circuit Current Limit I SC 0.50 0.75 1.25 A Overtemperature Shutdown T J increasing 135 °C Threshold T J decreasing 125 Error Flag Output Resistance R FLAG VIN = 5V, IL = 10mA 10 Ω VIN = 3.3V, IL = 10mA 15 Error Flag Output Current I FLAG VFLAG = 5V 0.01 1 µA UVLO Threshold V UVLO VIN Increasing 2.5 V VIN Decreasing 2.3 Unless otherwise noted, VIN = 5V and TA = 25°C. VEN ≤ 0.8V for the IMP2524/27-2. The Enable input has approximately 200mV of hysteresis.

N D E eA eB C 0°–15° A e B1 B LA1 Plastic DIP (16-Pin).eps Plastic DIP (16-Pin) HE eB D A L 0°– 8° C 16-Pin (SO).eps SO (16-Pin) sehcnIs retemilliM niMx aMn iMx aM *)niP-61(PIDcitsalP 2A5 21.05 71.08 1.35 4.4 B6 10.02 20.01 4.06 5.0 1B5 40.05 60.04 1.15 6.1 C8 00.02 10.00 2.00 3.0 D5 47.05 67.02 9.813 4.91 1D5 00.00 80.03 1.03 0.2 E0 03.05 23.02 6.76 2.8 1E0 42.00 13.00 1.67 8.7 L5 11.00 51.02 9.21 8.3 **)niP-61(OS A6 29.03 401.05 3.25 6.2 1A0 400.08 110.00 1.00 3.0 B3 10.00 20.03 3.01 5.0 C1 900.05 210.03 2.02 3.0 D7 793.03 314.00 1.010 5.01 E4 192.02 662.00 4.70 6.7 eC SB050.0C SB72.1 H4 93.09 14.00 0.015 6.01 L6 10.00 50.00 4.07 2.1 BA850-OMgniwarDCEDEJ* AA310-SMgniwarDCEDEJ** 3ta.30t_62/4252 Package Dimensions IMP252IMP252 4/24/2 77 4 408-432-9100/www.impweb.com © 2000 IMP , Inc. 6

© 2000 IMP , Inc. 408-432-9100/www.impweb.com 1 IMP2525IMP2525 POWER MANAGEMENT N USB hosts and self-powered hubs N Battery-charger circuits and power supplies N Meets or exceeds USB Rev. 1.1 and 2.0 specification N Low MOSFET RON (0.14Ω at 3V) N 2.7V to 5.5V input operation N Current limiting N Soft-start turn-on (1ms) prevents turn-on glitches N 500mA continuous load current N MOSFET short-circuit current limit (1.25A max) N Low supply current – 110µA ON state current, 1µA OFF state current N Active-LOW or Active-HIGH Enable input N 3.3V or 5V logic compatibility N Fault Flag indicates three fault conditions: – Undervoltage – Current limit – Thermal shutdown N Open-drain Fault Flag output N 2.4V Undervoltage Lockout (UVLO) N Pin compatible with the Micrel MIC2525 Block Diagrams USB High-Side PUSB High-Side Poowwer Switcer Switchh – Sing– Single switcle switchh – 0.– 0.1144ΩΩ "ON" r"ON" resisesisttance at 3Vance at 3V – MIC2525 pin com– MIC2525 pin compatiblepatible The IMP2525 high-side power switch IC is designed for self-powered and bus-powered Universal Serial Bus (USB) power supply and power management applications. The IMP2525 conforms to USB standards with a low output switch ON-resistance (R ON) and minimal voltage drop across the switch. The fault current is limited to 750mA typically, and a flag output conveys fault conditions to the local USB controller. The IMP2525 provides a “Soft-Start” function that ramps up the ON- current to eliminate any excessive voltage drop on the input side that could occur due to charging a capacitive load in bus-powered applica- tions. 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 a valid supply voltage present. The Enable input logic can be interfaced with both 3.3V and 5V logic. Both active-HIGH and active-LOW enable logic versions are available. The IMP2525 devices are available in 8-pin DIP and 8-pin SO packages. IMP offers a complete family of USB power management products. For dual-switch applications see the IMP2526 data sheet and for quad-switch application, see the IMP2524. The single-switch IMP2525A features a 50% lower switch resistance, 0.07Ω. 2525_01.eps OUT NC/OUT FLG2 GND3 IMP2525 Power Switch Gate Control Current Limit 1.2V Reference UVLO Thermal Shutdown Oscillator EN 1 IN 7 Charge Pump Key Features

6 NC/OUT

*Connect pins 6 and 8 for MIC2525 compatibility 7I N *8 OUT 2525_02.eps IMP2525 SO/DIP 2525_03.eps OUT8 IN GND FLG 2 EN 1 Logic, Charge Pump Pin Number Name Function 1 EN Enable input. This pin is the MOSFET switch driver logic input. Both active-HIGH (-1 suffix) and active-LOW (-2 suffix) logic devices are available. 2 FLG Fault flag output. This open-drain output goes into an active-LOW state in response to undervoltage, current limit or thermal shutdown conditions. 3 GND Ground. Power supply return for the internal circuitry of the IC. 4, 5 NC No connection. These pins have no internal connections to the device. 6 NC/OUT No connection. This pin has no internal connection to the device. Connect pins 6 and 8 to maintain pin-compatibility with the MIC2525. 7 IN Positive power supply voltage input. This is the switching MOSFET drain connection as well as the positive supply for the IC. 8 OUT MOSFET source. The output pin supplies power to the load. Part Number Enable Logic Temperature Range Pins-Package IMP2525-1BM Active HIGH – 40°C to +85°C 8-SO IMP2525-2BM Active LOW – 40°C to +85°C 8-SO IMP2525-1BN Active HIGH – 40°C to +85°C 8-DIP IMP2525-2BN Active LOW – 40°C to +85°C 8-DIP Pin Configuration

© 2000 IMP , Inc. USB High-Side Power Switches 3 Package Thermal Resistance SO (θ 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. Parameter Symbol ConditionsMin Typ Max Units Supply Voltage Range V IN TA = – 40°C to +85°C 2.7 5.5 V Operating Temperature Range T A – 40 85 °C Supply Current I IN OFF Switch OFF, No load 0.75 5 µA Switch OFF V ENOFF ≤ 0.8V, VENON ≥ 2.4V IMP2525-1 VENON ≤ 0.8V, VENOFF ≥ 2.4V IMP2525-2 Supply Current I IN ON Switch ON, No load 110 160 µA Switch ON V ENOFF ≤ 0.8V, VENON ≥ 2.4V IMP2525-1 VENON ≤ 0.8V, VENOFF ≥ 2.4V IMP2525-2 Enable Input Threshold V ENH LOW to HIGH (“0” to “1”) Enable Voltage, Note 1, 2 2.1 2.4 V VENL HIGH to LOW (“1” to “0”) Enable Voltage, Note 1, 2 0.8 1.9 Enable Input Current I EN VEN = 0V to 5.5V –1 ±0.01 1 µA Enable Input Capacitance C EN 1p F Switch ON Resistance R ON VIN = 5V, IOUT = 500mA 0.1 0.14 Ω VIN = 3.3V, IOUT = 500mA 0.14 0.18 Output Turn-On Delay T DON RL = 10Ω 0.25 ms Output Turn-On Rise Time T RON RL = 10Ω 1m s Output Turn-Off Delay T DOFF RL = 10Ω, Note 2 1 20 µs Output Turn-Off Fall Time T FOFF RL = 10Ω, Note 2 1 20 µs Output Leakage Current I OFF 10 µA Short-circuit Current Limit I SC 0.50 0.75 1.25 A Overtemperature Shutdown T J increasing 135 °C Threshold T J decreasing 125 Error Flag Output Resistance R FLAG VIN = 5V, IL = 10mA 10 25 Ω VIN = 3.3V, IL = 10mA 15 40 Error Flag Output Current I FLAG VFLAG = 5V 0.01 1 µA UVLO Threshold V UVLO VIN Increasing 2.5 V VIN Decreasing 2.3 Unless otherwise noted, VIN = 5V and TA = 25° C. for the IMP2525-2. The Enable input has approximately 200mV of hysteresis. 2. Over operating temperature range, –40 °C ≤ TA ≤ 85°C. Absolute Maximum Ratings

power MOSFET has been turned OFF. flows through the switch from IN to OUT toward the load. the FLG and OUT pins when a fault condition is detected. detection is active only if the chip is enabled. old is exceeded the power MOSFET is turned OFF. Table 1. Fault Flag Conditions - Switch Enabled

Application Information

IMP strongly recommends the use of a 0.1µF to 1µF bypass capac- itor to control transients on the power supply pin. This capacitor, connected from IN to GND, should be in close proximity to the IMP2525 for maximum transient suppression. The lack of suitable bypassing can result in ringing on the IN input when transients occur. This ringing, due to supply lead inductance, could damage IMP2525 control circuitry if the 8V maximum input rating is exceeded. Figure 1. Supply Bypassing spurious operation. Do not drive EN below GND. this high-load, soft-start operation.

3 OUT

Figure 2. Soft-Start Application

6 408-432-9100/www.impweb.com © 2000 IMP , Inc. 6 2525_05.eps 10k 10k 0.1µF FLG IMP2525 OVERCURRENT USB Controller Figure 4. Transient Filter Figure 3. Inrush Current-Limit Application Figure 5. Single-Port Self-Powered Hub Application the fault flag circuit will prevent this momentary flag ( Figure 4).

© 2000 IMP , Inc. USB High-Side Power Switches 7 E D eA eB C 0°–15° A e b2 b L A1 Plastic DIP (8-Pin)a.eps Plastic DIP (8-Pin) L 0°– 8° C HE e D B A1 A SO (8-Pin).eps InchesMillimeters Min Max Min Max Plastic DIP (8-Pin)* A2 0.115 0.195 2.92 4.95 b 0.014 0.022 0.36 0.56 b2 0.045 0.070 1.14 1.78 b3 0.030 0.045 0.80 1.14 D 0.355 0.400 9.02 10.16 E 0.300 0.325 7.62 8.26 E1 0.240 0.280 6.10 7.11 L 0.115 0.150 2.92 3.81 SO (8-Pin)** A 0.053 0.069 1.35 1.75 A1 0.004 0.010 0.10 0.25 B 0.013 0.020 0.33 0.51 C 0.007 0.010 0.19 0.25 e 0.050 1.27 E 0.150 0.157 3.80 4.00 H 0.228 0.244 5.80 6.20 L 0.016 0.050 0.40 1.27 D 0.189 0.197 4.80 5.00 SO (8-Pin) * JEDEC Drawing MS-001BA ** JEDEC Drawing MS-012AA Package Dimensions

© 2000 IMP , Inc. 408-432-9100/www.impweb.com 1 IMP2525AIMP2525A POWER MANAGEMENT Key Features N USB hosts and self-powered hubs N Battery-charger circuits and power supplies N Meets or exceeds USB Rev. 1.1 and 2.0 specification N Low MOSFET RON (0.07Ω at 3V) N Pin compatible with the Micrel MIC2525 – 50% lower than MIC2525 N 2.7V to 5.5V input operation N Current limiting N Soft-start turn-on (1ms) prevents turn-on glitches N 500mA continuous load current N MOSFET short-circuit current limit (2.5A max) N Low supply current – 110µA ON state current, 1µA OFF state current N Active-LOW or Active-HIGH Enable input N 3.3V or 5V logic compatibility N Open-drain Fault Flag indicates three fault conditions: – Undervoltage – Current limit – Thermal shutdown N 2.4V Undervoltage Lockout (UVLO) Block Diagrams LoLoww-R-Resisesisttanceance USB High-Side PUSB High-Side Poowwer Switcer Switchh - Sing- Single switcle switchh - 0.0- 0.077ΩΩ "ON" r"ON" resisesisttance at 3Vance at 3V - 50% lo- 50% lowwer rer resisesisttance tance than MIC2525han MIC2525 - MIC2525 pin com- MIC2525 pin compatiblepatible The IMP2525A high-side power switch IC is designed for self-powered and bus-powered Universal Serial Bus (USB) power supply and power management applications. The IMP2525A conforms to USB standards with a low output switch ON-resistance (R ON) and minimal voltage drop across the switch. Switch resistance is 50% lower than the MIC2525. The fault current is limited to 1.5A typically, and a flag output conveys fault conditions to the local USB controller. The IMP2525A provides a “Soft-Start” function that ramps up the ON-current to eliminate any excessive voltage drop on the input side that could occur due to charg- ing a capacitive load in bus-powered applications. 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 a valid supply voltage present. The Enable input logic can be interfaced with both 3.3V and 5V logic. Both active-HIGH and active-LOW enable logic versions are available. The IMP2525A devices are available in 8-pin DIP and 8-pin SO packages. IMP offers a complete family of USB power management products. For dual-switch applications see the IMP2526 data sheet and for quad-switch application, see the IMP2524. The single-switch IMP2525 matches the performance of the Micrel MIC2525. 2525A_01.eps OUT OUT FLG2 GND3 IMP2525A Power Switch Gate Control Current Limit 50% Lower Resistance Than MIC25251.2V Reference UVLO Thermal Shutdown Oscillator EN 1 IN 7 Charge Pump

6 OUT

8 OUT

2525A_02.eps IMP2525A SO/DIP 2525A_03.eps OUT8 IN GND FLG 2 EN 1 Logic, Charge Pump Part Number Enable Logic Temperature Range Pins-Package IMP2525A-1BM Active HIGH – 40°C to +85°C 8-SO IMP2525A-2BM Active LOW – 40°C to +85°C 8-SO IMP2525A-1BN Active HIGH – 40°C to +85°C 8-DIP IMP2525A-2BN Active LOW – 40°C to +85°C 8-DIP Pin Number Name Function 1 EN Enable input. This pin is the MOSFET switch driver logic input. Both active-HIGH (-1 suffix) and active-LOW (-2 suffix) logic devices are available. 2 FLG Fault flag output. This open-drain output goes into an active-LOW state in response to undervoltage, current limit or thermal shutdown conditions. 3 GND Ground. Power supply return for the internal circuitry of the IC. 4, 5 NC No connection. These pins have no internal connections to the device. 6 OUT MOSFET source. The output pin supplies power to the load. 7 IN Positive power supply voltage input. This is the switching MOSFET drain connection as well as the positive supply for the IC. 8 OUT MOSFET source. The output pin supplies power to the load. Pin Configuration

© 2000 IMP , Inc. USB High-Side Power Switches 3 Package Thermal Resistance SO (θ 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. Parameter Symbol ConditionsMin Typ Max Units Supply Voltage Range V IN TA = – 40°C to +85°C 2.7 5.5 V Operating Temperature Range T A – 40 85 °C Supply Current I IN OFF Switch OFF, No load 0.75 5 µA Switch OFF V ENOFF ≤ 0.8V, VENON ≥ 2.4V IMP2525A-1 VENON ≤ 0.8V, VENOFF ≥ 2.4V IMP2525A-2 Supply Current I IN ON Switch ON, No load 110 160 µA Switch ON V ENOFF ≤ 0.8V, VENON ≥ 2.4V IMP2525A-1 VENON ≤ 0.8V, VENOFF ≥ 2.4V IMP2525A-2 Enable Input Threshold V ENH LOW to HIGH (“0” to “1”) Enable Voltage, Note 1, 2 2.1 2.4 V VENL HIGH to LOW (“1” to “0”) Enable Voltage, Note 1, 2 0.8 1.9 Enable Input Current I EN VEN = 0V to 5.5V –1 ±0.01 1 µA Enable Input Capacitance C EN 1p F Switch ON Resistance R ON VIN = 5V, IOUT = 500mA 0.05 0.07 Ω VIN = 3.3V, IOUT = 500mA 0.07 0.09 Output Turn-On Delay T DON RL = 10Ω 0.25 ms Output Turn-On Rise Time T RON RL = 10Ω 1m s Output Turn-Off Delay T DOFF RL = 10Ω, Note 2 1 20 µs Output Turn-Off Fall Time T FOFF RL = 10Ω, Note 2 1 20 µs Output Leakage Current I OFF 10 µA Short-circuit Current Limit I SC 1.0 1.5 2.5 A Overtemperature Shutdown T J increasing 135 °C Threshold T J decreasing 125 Error Flag Output Resistance R FLAG VIN = 5V, IL = 10mA 10 25 Ω VIN = 3.3V, IL = 10mA 15 40 Error Flag Output Current I FLAG VFLAG = 5V 0.01 1 µA UVLO Threshold V UVLO VIN Increasing 2.5 V VIN Decreasing 2.3 Unless otherwise noted, VIN = 5V and TA = 25° C. VEN ≤ 0.8V for the IMP2525A-2. The Enable input has approximately 200mV of hysteresis. 2. Over operating temperature range, –40°C ≤ TA ≤ 85°C. Absolute Maximum Ratings

the power MOSFET has been turned OFF. flows through the switch from IN to OUT toward the load. the FLG and OUT pins when a fault condition is detected. detection is active only if the chip is enabled. old is exceeded the power MOSFET is turned OFF.

© 2000 IMP , Inc. USB High-Side Power Switches 5 IMP strongly recommends the use of a 0.1µF to 1µF bypass capac- itor to control transients on the power supply pin. This capacitor, connected from IN to GND, should be in close proximity to the IMP2525A for maximum transient suppression. The lack of suitable bypassing can result in ringing on the IN input when transients occur. This ringing, due to supply lead inductance, could damage IMP2525A control circuitry if the 8V maximum input rating is exceeded. spurious operation. Do not drive EN below GND. this high-load, soft-start operation.

© 2000 IMP , Inc. USB High-Side Power Switches 7 E D eA eB C 0°–15° A e b2 b L A1 Plastic DIP (8-Pin)a.eps Plastic DIP (8-Pin) L 0°– 8° C HE e D B A1 A SO (8-Pin).eps InchesMillimeters Min Max Min Max Plastic DIP (8-Pin)* A2 0.115 0.195 2.92 4.95 b 0.014 0.022 0.36 0.56 b2 0.045 0.070 1.14 1.78 b3 0.030 0.045 0.80 1.14 D 0.355 0.400 9.02 10.16 E 0.300 0.325 7.62 8.26 E1 0.240 0.280 6.10 7.11 L 0.115 0.150 2.92 3.81 SO (8-Pin)** A 0.053 0.069 1.35 1.75 A1 0.004 0.010 0.10 0.25 B 0.013 0.020 0.33 0.51 C 0.007 0.010 0.19 0.25 e 0.050 1.27 E 0.150 0.157 3.80 4.00 H 0.228 0.244 5.80 6.20 L 0.016 0.050 0.40 1.27 D 0.189 0.197 4.80 5.00 SO (8-Pin) * JEDEC Drawing MS-001BA ** JEDEC Drawing MS-012AA Package Dimensions

© 2000 IMP , Inc. 408-432-9100/www.impweb.com 1 IMP2526IMP2526 POWER MANAGEMENT Key Features N USB host and self-powered hubs N Bus-powered hubs N Hot plug-in power supplies N Battery chargers N USB Rev. 1.1 and 2.0 compliant N 2.7V to 5.5V input operation N Low MOSFET ON resistance (0.1Ω at 5V) N Low supply current – 110µA ON state current, 1µA OFF state current N 500mA continuous load current per switch N 1.25A maximum current limit, 750mA typical N Thermal shutdown 2.4V undervoltage lockout (UVLO) N Open-drain flag output – Undervoltage – Current limit – Thermal shutdown N Active HIGH(-1) and active LOW(-2) enable N Pin compatible with the Micrel MIC2526 Block Diagrams Dual USB High-Side PDual USB High-Side Poowwerer SwitcSwitchh – Dual switc– Dual switchh – – 0.0.1144ΩΩ /0./0.11ΩΩ “ON” r“ON” resisesisttance at 3/5Vance at 3/5V – MIC2526 pin com– MIC2526 pin compatiblepatible The IMP2526 dual high-side power switch IC is designed for self- powered and bus-powered Universal Serial Bus (USB) power supply and general purpose power management applications. ON resistance is a low 100mΩ at 5V input and 140mΩ at 3V input. The IMP2526 conforms to the new USB Revision 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 IMP2526 “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 a 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 0.75µA when disabled and just 110µA when enabled. The IMP2526 devices are available in 8-pin DIP and 8-pin SO packages and are pin compatible replacements for the Micrel MIC2526-1/-2. IMP 2526_01.eps FLGB OUTB GND IN OUTA FLGA IMP2526 1.2V Reference Thermal Shutdown Gate Control UVLO Current Limit Gate Control Current Limit Charge Pump Charge Pump Oscillator ENB 4 ENA 1 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 50% lower switch resistance, 0.07 Ω. For quad- switch applications, refer to the IMP2524 data sheet.

5 OUTB

6 GND

8 OUTA

2526_02.eps IMP2526 SO/DIP 2526_03.eps OUTA8 IN GND FLGA 2 ENA 1 Logic, Charge Pump OUTB5ENB 4 FLGB 3 Logic, Charge Pump IMP2526 Pin Number Name Function 1, 4 ENA, ENB Enable input. This pin is the MOSFET switch driver logic input. Both active-HIGH (-1 suffix) and active-LOW (-2 suffix) logic devices are available. 2, 3 FLGA, FLGB Fault flag output. This open-drain output goes into an active-LOW state in response to undervoltage, current limit or thermal shutdown conditions. 6 GND Ground. Power supply return for the internal circuitry of the IC. 7 IN Positive power supply voltage input. This is the switching MOSFET drain connection as well as the positive supply for the IC. 8, 5 OUTA, OUTB MOSFET source. The output pin supplies power to the load. Part Number Enable Logic Temperature Range Pins-Package IMP2526-1BM Active HIGH – 40°C to +85°C 8-SO IMP2526-2BM Active LOW – 40°C to +85°C 8-SO IMP2526-1BN Active HIGH – 40°C to +85°C 8-DIP IMP2526-2BN Active LOW – 40°C to +85°C 8-DIP

© 2000 IMP , Inc. USB High-Side Power Switches 3 Absolute Maximum Ratings Package Thermal Resistance SO (θ 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. Parameter Symbol ConditionsMin Typ Max Units Supply Voltage Range V IN TA = – 40°C to +85°C 2.7 5.5 V Operating Temperature Range T A – 40 85 °C Supply Current I IN OFF Switch OFF, No load 0.75 5 µA Switch OFF V ENOFF ≤ 0.8V, VENON ≥ 2.4V IMP2526-1 VENON ≤ 0.8V, VENOFF ≥ 2.4V IMP2526-2 Supply Current I IN ON Switch ON, No load 110 160 µA Switch ON V ENOFF ≤ 0.8V, VENON ≥ 2.4V IMP2526-1 VENON ≤ 0.8V, VENOFF ≥ 2.4V IMP2526-2 Enable Input Threshold V ENH LOW to HIGH (“0” to “1”) Enable Voltage, Note 1 2.1 2.4 V VENL HIGH to LOW (“1” to “0”) Enable Voltage, Note 1 0.8 1.9 Enable Input Current I EN VEN = 0V to 5.5V –1 ±0.01 1 µA Enable Input Capacitance C EN 1p F Switch ON Resistance R ON VIN = 5V, IOUT = 500mA 0.10 0.14 Ω VIN = 3.3V, IOUT = 500mA 0.14 0.18 Output Turn-On Delay T DON RL = 10Ω each output 0.25 ms Output Turn-On Rise Time T RON RL = 10Ω each output 1 ms Output Turn-Off Delay T DOFF RL = 10Ω each output 1 20 µs Output Turn-Off Fall Time T FOFF RL = 10Ω each output 1 20 µs Output Leakage Current I OFF 10 µA Short-circuit Current Limit I SC 0.50 0.75 1.25 A Overtemperature Shutdown T J increasing 135 °C Threshold T J decreasing 125 Error Flag Output Resistance R FLAG VIN = 5V, IL = 10mA 10 25 Ω VIN = 3.3V, IL = 10mA 15 40 Error Flag Output Current I FLAG VFLAG = 5V 0.01 1 µA UVLO Threshold V UVLO VIN Increasing 2.5 V VIN Decreasing 2.3 Unless otherwise noted, VIN = 5V and TA = 25° C. for the IMP2526-2. The Enable input has approximately 200mV of hysteresis.

power MOSFET has been turned OFF. current can flow in either direction. wire-NORed to a common pull-up resistor. detection is active only if the chip is enabled. old is exceeded the power MOSFET is turned OFF. fault conditions gives additional information.

© 2000 IMP , Inc. USB High-Side Power Switches 5 IMP strongly recommends the use of a 0.1µF to 1µF bypass capac- itor to control transients on the power supply pin. This capacitor, connected from IN to GND, should be in close proximity to the IMP2526 for maximum transient suppression. The lack of suitable bypassing can result in ringing on the IN input when transients occur. This ringing, due to supply lead inductance, could damage IMP2526 control circuitry if the 8V maximum input rating is exceeded. this high-load, soft-start operation.

3 GND

© 2000 IMP , Inc. USB High-Side Power Switches 7 E D eA eB C 0°–15° A e b2 b L A1 Plastic DIP (8-Pin)a.eps Plastic DIP (8-Pin) L 0°– 8° C HE e D B A1 A SO (8-Pin).eps InchesMillimeters Min Max Min Max Plastic DIP (8-Pin)* A2 0.115 0.195 2.92 4.95 b 0.014 0.022 0.36 0.56 b2 0.045 0.070 1.14 1.78 b3 0.030 0.045 0.80 1.14 D 0.355 0.400 9.02 10.16 E 0.300 0.325 7.62 8.26 E1 0.240 0.280 6.10 7.11 L 0.115 0.150 2.92 3.81 SO (8-Pin)** A 0.053 0.069 1.35 1.75 A1 0.004 0.010 0.10 0.25 B 0.013 0.020 0.33 0.51 C 0.007 0.010 0.19 0.25 e 0.050 1.27 E 0.150 0.157 3.80 4.00 H 0.228 0.244 5.80 6.20 L 0.016 0.050 0.40 1.27 D 0.189 0.197 4.80 5.00 SO (8-Pin) * JEDEC Drawing MS-001BA ** JEDEC Drawing MS-012AA Package Dimensions

IMP , Inc. Corporate Headquarters 2830 N. First Street San Jose, CA 95134-2071 Tel: 408-432-9100 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. 2000 © IMP, Inc. Printed in USA Publication #: 5001 Revision: C Issue Date: 07/13/00 Type: Preliminary

Product Information

IMP2525-1BM specifications and overview.

Summary

Quad USB Hiigh--Siide Power Swiittch wiitth Faulltt Dettecttiion

Description

Quad USB Hiigh--Siide Power Swiittch wiitth Faulltt Dettecttiion

Source title IMP2525-1BM Datasheet(PDF) - A1 PROs co., Ltd.

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