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MAX5008 Regulated 5V USB Charge Pump with Programmable Current Limit

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Status

Active: In Production.

Description

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The MAX5008 charge-pump regulator generates a regulated 5V output up to 125mA with a 2.95V to 5.5V input voltage range. The device includes resistor-programmable overcurrent limit. The MAX5008 requires a minimum number of external components for normal operation. The high 1MHz switching frequency allows the use of small surface-mount ceramic capacitors.

The fault-protection circuitry limits the output current when it exceeds the limit set by an external resistor. The output current can range from 1mA to 150mA to accommodate circuit requirements. A FAULT-bar output indicates when the device is in current limit or the output is out of regulation.

A low-power shutdown mode reduces supply current to less than 1µA and places the output in a high-impedance state. The MAX5008 is offered in a space-saving 10-pin µMAX® package that is only 1.1mm high.

Key Features Applications/Uses

Regulated 5V Output Up to 125mA
Indefinite Short-Circuit Protection
Adjustable Output Current Limit
No Inductors Required
0.1µA Shutdown Current
Thermal Shutdown
Fault Output Indicates Overcurrent or Output Voltage Out of Regulation
2.95V to 5.5V Input Voltage Range
10-Pin µMAX Package

3.3V to 5V Local Conversion Applications
Battery-Powered Applications
Flash Memory Supplies
USB Host Devices