1FEATURES

• 2.5 V to 4.8 V Input Voltage Range

• 0.8% Output Voltage Accuracy V POS

• Excellent Line Transient Regulation

• 250 mA Output Current

• Fixed 4.6 V V POS Output Voltage

• Digitally Programmable VNEG, –2.2V to –5.2V

• –4.9V Default Value for VNEG

• Short Circuit Protection

• Thermal Shutdown

• 3mm × 3mm 10-Pin QFN Package

APPLICATIONS

• Active Matrix OLED

DESCRIPTION

The TPS65137AS is designed to drive AMOLED

displays (Active Matrix Organic Light Emitting Diode)

requiring positive and negative voltage supply rails.

The device integrates a boost converter with LDO

post regulator and an inverting buckboost converter

suitable for battery operated products. The digital

control pin (CTRL) allows programming the negative

output voltage in digital steps. The TPS65137AS

uses a novel technology enabling excellent line and

load regulation. This is required to avoid disturbance of the AMOLED display by the input voltage

disturbances occurring during transmit periods in

mobile phones.