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