General Description

The AS1302 is a 30mA inductorless boost converter using a double H-bridge charge-pump topology with two external flying capacitors. The AS1302 charge pump features 1:2 and 2:3 operation modes as well as a 1:1 operation mode where the input is directly connected to the output.

Key Features

Up to 90% Efficiency

2.9V to 5.15V Input Voltage

Regulated 5V Output

Automatic Mode Switching

<1µA Shutdown Current

Startup with Full Load (within 1ms)

Up to 30mA Load Current

Short Circuit Protection

Output Disconnected During Shutdown

Soft-Start

No Inductor Required

Small External Components Required

(COUT=2.2µF, CFLY=220nF)

Low Noise Fixed Frequency (1.2MHz, 49kHz) Charge Pump:

- 1:1 Battery Feed Through Mode

- 2:3 Single Phase Mode

- 1:2 Single Phase Mode

Package Options:

- TDFN (3x3x0.8mm) 10-pin

- WL-CSP 8-bumps with 0.4mm Pitch