General Description

The MAX1822 high-side supply, using a regulated charge pump, generates a regulated output voltage 11V greater than the input supply voltage to power high-side switching and control circuits. The MAX1822 allows low-resistance N-channel MOSFETs (FETs) to be used in circuits that normally require costly, less efficient P-channel FETs and PNP transistors. The high side output also eliminates the need for logic FETs in +5V and other low-voltage switching circuits.

Features

♦ +3.5V to +16.5V Operating Supply Voltage Range

♦ Output Voltage Regulated to VCC + 11V (typ)

♦ 150µA (typ) Quiescent Current

♦ Power-Ready Output

Applications

High-Side Power Control with N-Channel FETs

Low-Dropout Voltage Regulators

Power Switching from Low Supply Voltages

H-Switches

Stepper Motor Drivers

Battery-Load Management

Portable Computers