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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.