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.