1 Features

1• 2.9-V to 4.5-V Input Voltage Range

• Fixed 4.6-V Positive Output Voltage

• 0.5% VPOS Accuracy from 25ºC to 85ºC

• Separate VPOS Output Sense Pin

• Negative Output Voltage Digitally Programmable

from –1.4 V to –4.4 V (–4 V Default)

• Output Currents up to 250 mA Supported

• Excellent Line Transient Regulation

• Short-Circuit Protection

• Thermal Shutdown

• Available in 3.00-mm × 3.00-mm, 12-Pin QFN

Package

2 Applications

AMOLED Displays

3 Description

The TPS65631 is designed to drive AMOLED (Active

Matrix Organic Light Emitting Diode) displays requiring positive and negative supply rails. The

device integrates a boost converter for VPOS and an

inverting buck boost converter for VNEG and is

suitable for battery-operated products. The digital

control pin (CTRL) allows programming the negative output voltage in digital steps. The TPS65631 uses a

novel technology enabling excellent line transient

performance.