General Description

The G5934 is a high-voltage switched-capacitor charge pump that provides the regulated output voltage of 1.5x input voltage. Input voltages ranging from 8V to 24V can be converted into a 12V to 36V output supply. The device is ideal for battery-powered conversion applications in notebook computers with a typical operating current of 150μA at 8V supply and 190μA at 24V supply.

The G5934 has a NMOS open-drain output pin for power good indication. When VOUT > 1.5 x VIN x 90, the NMOS will be turned off immediately and PG pin will be pulled high by external resistor.

The G5934 contains an embedded 12-V LDO to provide the supply voltage to the drivers controlled by ON signals. The discharging networks are connected to the 22Ω resistor to shut down the low-voltage system while control input signals ON are not ready.

The G5934 contains an over-temperature circuit to protect the device under continuous output short circuit conditions.

The G5934 is available in TQFN3X3-20 package (thermal pad included).

特性 Features

■ Input Range: 8V to 24V

■ Output Range: 12V to 36V

■ 150μA Quiescent Current at 8V Supply Voltage and 190μA Quiescent Current at 24V Supply Voltage

■ ±3 Regulated Output

■ Power Good Function

■ Power Good of Open Drain (Monitor AC VIN Only)

■ Embedded a 12-V LDO

■ 4 Control Signal Inputs

■ 4 12V-Drivers for external NMOS switches

■ 4 Discharging Networks for 22Ω

■ Over-Temperature Protection

■ Output Short Circuit Protection

■ TQFN3X3-20 Package

Applications

■ Notebook Computers