Catalog(1 parts)
| Part | Voltage - Output▲▼ | Voltage - Output▲▼ | Supplier Device Package | Number of Outputs▲▼ | Applications | Mounting Type | Package / Case | Operating Temperature▲▼ | Operating Temperature▲▼ | Voltage - Input▲▼ | Voltage - Input▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|
-18 V, 3 V | 5.599999904632568 V, 20 V | 16-VQFN (3x3) | 4 ul | Converter, TFT LCD | Surface Mount | 16-VFQFN Exposed Pad | -40 °C | 85 °C | 2.5 V | 5.5 V |
Key Features
• Main Output, VMAINAdjustable Voltage, 3.0 V to 5.6 V/25 mAPost-Regulated for Low Ripple (5mVPP)±0.8% Typical AccuracyEfficiency up to 83%Positive Output, VGHAdjustable Voltage up to 20 V/2 mA±3% Typical AccuracyNegative Output, VGLAdjustable Voltage down to -18 V/2 mA±3% Typical AccuracyAuxiliary 1.8 V/3.3 V Linear RegulatorAutomatic or Programmable Power SequencingComplete 1 mm Component Profile Solution2.5 V to 5.5 V Input Voltage RangeOutput Short Circuit Protected16-Pin QFN Package (3 × 3 × 0,9 mm)APPLICATIONSSmall Form Factor a-Si and LTPS TFT LCDCell Phones, Smart PhonesPDAs, Pocket PCsPortable DVDDigital-Still Cameras, CamcordersHandheld InstrumentsPortable GPSCar Navigation SystemsMain Output, VMAINAdjustable Voltage, 3.0 V to 5.6 V/25 mAPost-Regulated for Low Ripple (5mVPP)±0.8% Typical AccuracyEfficiency up to 83%Positive Output, VGHAdjustable Voltage up to 20 V/2 mA±3% Typical AccuracyNegative Output, VGLAdjustable Voltage down to -18 V/2 mA±3% Typical AccuracyAuxiliary 1.8 V/3.3 V Linear RegulatorAutomatic or Programmable Power SequencingComplete 1 mm Component Profile Solution2.5 V to 5.5 V Input Voltage RangeOutput Short Circuit Protected16-Pin QFN Package (3 × 3 × 0,9 mm)APPLICATIONSSmall Form Factor a-Si and LTPS TFT LCDCell Phones, Smart PhonesPDAs, Pocket PCsPortable DVDDigital-Still Cameras, CamcordersHandheld InstrumentsPortable GPSCar Navigation Systems
Description
AI
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.
The main output, VMAIN, is post-regulated to provide a low-ripple source drive voltage for the LCD display. The auxiliary outputs generate a boosted output voltage, VGH, up to 20 V, and a negative output voltage, VGL, down to -18 V for the LCD gate drive. The device has internal current limiting for high reliability under fault conditions. Additionally, the device offers a fixed output linear regulator for the LCD logic circuitry.
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.
The main output, VMAIN, is post-regulated to provide a low-ripple source drive voltage for the LCD display. The auxiliary outputs generate a boosted output voltage, VGH, up to 20 V, and a negative output voltage, VGL, down to -18 V for the LCD gate drive. The device has internal current limiting for high reliability under fault conditions. Additionally, the device offers a fixed output linear regulator for the LCD logic circuitry.