TPS65124RGT Datasheet PDF - TI

●DESCRIPTION

●The TPS6512x DC-DC converter supplies all three voltages required by amorphous-silicon (a-Si) and low-temperature poly-silicon (LTPS) TFT-LCD displays. The compact layout of the TPS6512x uses a single

●inductor to generate independently-regulated positive and negative outputs. A free-running variable peak current PWM control scheme time-multiplexes the inductor between outputs. This control architecture operates at a pseudo-fixed-frequency to provide fast response to line and load transients while maintaining a relatively constant switching frequency and high efficiency over a wide range of input and output voltages. Due to the high switching frequency capability of the device, inexpensive and ultra-thin 8.2 or 10 µH inductors can be used.

●FEATURES

●• Main Output, VMAIN

●– Adjustable Voltage, 3.0 V to 5.6 V/25 mA

●– Post-Regulated for Low Ripple (5mVPP)

●– ±0.8% Typical Accuracy

●– Efficiency up to 83%

●• Positive Output, VGH

●– Adjustable Voltage up to 20 V/2 mA

●– ±3% Typical Accuracy

●• Negative Output, VGL

●– Adjustable Voltage down to -18 V/2 mA

●– ±3% Typical Accuracy

●• Auxiliary 1.8 V/3.3 V Linear Regulator

●• Automatic or Programmable Power Sequencing

●• Complete 1 mm Component Profile Solution

●• 2.5 V to 5.5 V Input Voltage Range

●• Output Short Circuit Protected

●• 16-Pin QFN Package (3 × 3 × 0,9 mm)

●APPLICATIONS

●• Small Form Factor a-Si and LTPS TFT LCD

●• Cell Phones, Smart Phones

●• PDAs, Pocket PCs

●• Portable DVD

●• Digital-Still Cameras, Camcorders

●• Handheld Instruments

●• Portable GPS

●• Car Navigation Systems