TPS65148RHBR
Active4-CH LCD BIAS W/ GPM, VCOM, RESET, LCD DISCHARGE, HVS, EXT. ISOLATION SWITCH & LDO FOR GAMMA
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TPS65148RHBR
Active4-CH LCD BIAS W/ GPM, VCOM, RESET, LCD DISCHARGE, HVS, EXT. ISOLATION SWITCH & LDO FOR GAMMA
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Technical Specifications
Parameters and characteristics for this part
| Specification | TPS65148RHBR |
|---|---|
| Applications | TFT LCD, Converter |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 32-VFQFN Exposed Pad |
| Supplier Device Package | 32-VQFN (5x5) |
| Voltage - Input [Max] | 6 V |
| Voltage - Input [Min] | 2.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 3.20 | |
| Digi-Reel® | 1 | $ 3.20 | ||
| Tape & Reel (TR) | 3000 | $ 1.61 | ||
| 6000 | $ 1.55 | |||
| Texas Instruments | LARGE T&R | 1 | $ 2.42 | |
| 100 | $ 2.12 | |||
| 250 | $ 1.49 | |||
| 1000 | $ 1.20 | |||
Description
General part information
TPS65148 Series
The TPS65148 offers a compact power supply solution designed to supply the LCD bias voltages required by TFT (Thin Film Transistor) LCD panels running from a typical 5 V supply rail. The device integrates a high power step-up converter for VS(Source Driver voltage), an accurate voltage rail using an integrated LDO to supply the Gamma Buffer (VREG_O) and a Vcom buffer driving the LCD backplane. In addition to that, a gate voltage shaping block is integrated. The VGHsignal (Gate Driver High voltage) supplied by an external positive charge pump, is modulated into VGHMwith high flexibility by using a logic input VFLK and an external discharge resistor connected to the RE pin. Also, an external negative charge pump can be set using the boost converter of the TPS65148 to generate VGL(Gate Driver Low voltage). The integrated reset function together with the LCD discharge function available in the TPS65148 provide the signals enabling the discharge of the LCD TFT pixels when powering-off. The device includes safety features like overcurrent protection (OCP) and short-circuit protection (SCP) achieved by an external input-to-output isolation switch, as well as overvoltage protection (OVP) and thermal shutdown.
The TPS65148 offers a compact power supply solution designed to supply the LCD bias voltages required by TFT (Thin Film Transistor) LCD panels running from a typical 5 V supply rail. The device integrates a high power step-up converter for VS(Source Driver voltage), an accurate voltage rail using an integrated LDO to supply the Gamma Buffer (VREG_O) and a Vcom buffer driving the LCD backplane. In addition to that, a gate voltage shaping block is integrated. The VGHsignal (Gate Driver High voltage) supplied by an external positive charge pump, is modulated into VGHMwith high flexibility by using a logic input VFLK and an external discharge resistor connected to the RE pin. Also, an external negative charge pump can be set using the boost converter of the TPS65148 to generate VGL(Gate Driver Low voltage). The integrated reset function together with the LCD discharge function available in the TPS65148 provide the signals enabling the discharge of the LCD TFT pixels when powering-off. The device includes safety features like overcurrent protection (OCP) and short-circuit protection (SCP) achieved by an external input-to-output isolation switch, as well as overvoltage protection (OVP) and thermal shutdown.