General Description

The uP7534 is a current limited high-side switch designed

for applications where heavy capacitive loads and shortcircuits are likely to be met. This device operates with

inputs from 2.7V to 5.5V for both 3V and 5V systems. Its

low quiescent current (25uA) and standby current (<1uA)

conserve battery power in portable.

The power switch is controlled by a logic enable input and

driven by an internal charge pump circuit. When the output

load exceeds the current-limit threshold or a short is

present, the uP7534 asserts overcurrent protection and

limits the output current to a safe level by driving the power

switch into saturation mode.

The uP7534 features glitch-blank fault flag that is asserted

by overcurrent, overtemperature, or input undervoltage

lockout. The 8ms glitch-blanking time allows momentary

faults to be ignored, thus preventing false alarms to the

host system.

Other features include soft-start to limit inrush current

during plug-in, thermal shutdown to prevent catastrophic

switch failure from high-current loads, under-voltage lockout

(UVLO) to ensure that the device remains off unless there

is a valid input voltage present. The uP7534 is available in

SOP-8 , SOT23-5, MSOP-8, and PMSOP-8 packages.

特性 Features

Compliant to USB Specifications

Operating Range: 2.7 V to 5.5 V

75mΩ (5VIN MSOP) High Side MOSFET Switch

25uA Typical Quiescent Current

<1uA Typical Shutdown Current

Over Current/ Short Circuit Protect

Thermal Shutdown Protection

Deglitched Open Drain Fault Flag

Slow Turn On and Fast Turn Off

Enable Active-High or Active-Low

UL Approved-E316940

TuV EN60950-1 Certification

CB IEC60950-1 Certification

RoHS Compliant and Halogen Free