Texas Instruments 200 mA dual output power supply

A 200 mA dual output power supply designed to provide improved picture quality for active matrix OLED (AMOLED) displays that require positive and negative supply rails has been released. The TPS65137 uses a low dropout post regulator for line and load transient response with minimum output voltage ripples to provide stable picture quality.

With its input range of 2.3 to 5.5 V and small solution size of 3 x 3 mm QFN package and small external component count, it is suitable for AMOLED displays in portable devices, such as mobile phones and smartphones.

Key features include: wide input voltage range allows the device to accept higher positive input voltages than the positive output voltage and still maintain accurate regulation of 1% of the positive output voltage; LDO post regulator for positive output to provide line and load transient response with minimum output voltage ripples to provide stable picture quality; power-save mode with out-of-audio control reduces switching frequency as the load current decreases and maintains high efficiency over the entire load current range without audible noise; digitally programmable negative output voltage from -2.2 to -4.9 in digital steps.