●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
