TPS65100PWPR

Product Summary

The TPS65100PWPR triple output lcd supply offers a compact and small power supply solution that provides all three voltages required by thin film transistor (TFT) LCD displays. The auxiliary linear regulator controller can be usedto generate a 3.3-V logic power rail for systemspowered by a 5-V supply rail only. The main output, Vo1, is a 1.6-MHz, fixed-frequencyPWM boost converter providing the source drivevoltage for theLCD display. The TPS65100PWPR is available in two versions with different internal switch current limits to allow the use of asmaller external inductorwhen lower output power is required. The TPS65100PWPR has a typical switch current limit of 2.3 A. An externally adjustable negative charge pump provides the negative gate drive voltage. Dueto the high 1.6-MHz switching frequency of thecharge pumps, inexpensive and small 220-nF capacitors can be used. The TPS65100PWPR has an integrated VCOM buffer to power the LCD backplane. For LCD panels powered by 5 V only, the TPS65100PWPR has a linear regulatorcontroller using an external transistor to provide aregulated 3.3-V output for the digital circuits. Formaximum safety, the entire device goes into shut- down as soon as one of the outputs is out of regulation. The TPS65100PWPR can be enabled again bytoggling the input or the enable (EN) pin to GND.

Parametrics

TPS65100PWPR absolute maximum ratings: (1)Voltages on pin VIN: -0.3 V to 6 V; (2)Voltages on pin VO1, SUP, PG: -0.3 V to 15.5 V; (3)Voltages on pin EN, MODE, ENR: -0.3 V to VI + 0.3 V; (4)Voltage on VCOMIN: 14 V; (5)Voltage on pin SW: 20 V; (6)Operating junction temperature range: -40℃ to 150℃; (7)Storage temperature range: -65℃ to 150℃; (8)Lead temperature (soldering, 10 sec): 260℃.

Features

TPS65100PWPR features: (1)2.7-V to 5.8-V Input Voltage Range; (2)1.6-MHz Fixed Switching Frequency; (3)3 Independent Adjustable Outputs; (4)Main Output of up to 15 V With < 1% Output Voltage Accuracy ; (5)Negative Output Voltage Down to -12 V/20 mA; (6)Positive Output Voltage up to 30 V/20 mA; (7)Integrated VCOM Buffer; (8)Auxiliary 3.3-V Linear Regulator Controller; (9)Internal Soft Start; (10)Internal Power-On Sequencing; (11)Fault Detection of all Outputs; (12)Thermal Shutdown; (13)Available in TSSOP-24 and QFN-24PowerPAD Packages.

Diagrams