TI’s Dual-output 200-ma Power Supply Improves Picture Quality In AMOLED Displays
Texas Instruments introduced a new 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. The TPS65137 uses a low dropout (LDO) post regulator for line and load transient response with minimum output voltage ripples to provide stable picture quality.
With its wide input range of 2.3 V to 5.5 V and small solution size of 3-mm x 3-mm QFN package and small external component count, the TPS65137 is suited for AMOLED displays in portable devices, such as mobile phones and smartphones. Order samples of the TPS65137 today: www.ti.com/tps65137-preu.
Key features and benefits of the TPS65137
· Wide input voltage range of 2.3 V to 5.5 V allows the device to accept higher positive input voltages than the positive output voltage and still maintain accurate regulation of one percent 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.
· Advanced 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 V to -4.9 V in digital step.
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