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