IMP2526 Dual USB High-Side Power Switch
●0.14Q /0.1Q “0N” resistance at 3/5V
●MIC2526 pin compatible
■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 0.75μAwhen 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 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, 0.07Ω. For quad-switch applications, refer to the IMP2524 data sheet.
●Key Features
■USB Rev. 1.1 compliant
■2.7V to 5.5V input operation
■Low MOSFET ON resistance (0.1Ω at 5V)
■Low supply current
◆110μA ON state current, 1μA OFF state current
■500mA continuous load current per switch
■1.25A maximum current limit, 750mA typical
■Thermal shutdown 2.4V undervoltage lockout (UVLO)
■Open-drain flag output
◆Undervoltage
◆Current limit
◆Thermal shutdown
■Active HIGH(-1) and active LOW(-2) enable
■Pin compatible with the Micrel MIC2526
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IMP2526-1BM 、 IMP2526-2BM 、 IMP2526-1BN 、 IMP2526-2BN 、 IMP2526 、 MIC2526-1 、 MIC2526-2 、 IMP2526-1 、 IMP2526-2 |
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Dual USB High-Side Power Switch 、 dual high-side power switch IC |
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[ USB host ][ self-powered hubs ][ Bus-powered hubs ][ Hot plug-in power supplies ][ Battery chargers ] |
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Datasheet |
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Please see the document for details |
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SO;DIP |
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English Chinese Chinese and English Japanese |
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08/08/05 |
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Revision:A |
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187 KB |
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