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Texas Instruments TPS65120RGTT — Power Management (PMIC / Gate Driver)

TPS65120RGTT – TI TFT LCD Bias Supply, 4-Output PMIC, 16-QFN

MPNTPS65120RGTT
Active

Texas Instruments TPS65120RGTT, Power Management (PMIC / Gate Driver), 4-output converter for TFT LCD, 2.5V~5.5V input, adjustable positive to 20V and negative to -18V, 16-VFQFN (3x3 mm) exposed pad, -40°C~85°C.

$3.1900Ref. price · indicative, final on quote
Texas Instruments TPS65120RGTT datasheet (PDF)
Packaging16-VFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS65120RGTT specifications
ParameterValue
MountingSurface Mount
Voltage - input2.5V ~ 5.5V
Voltage - output3V ~ 5.6V, Adj up to 20V, Adj down to -18V
I/O channels4
Operating temperature-40°C~85°C
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsConverter, TFT LCD
Case16-VFQFN Exposed Pad

Product details

Four-rail TFT bias generator in a 3x3 mm QFN

The TPS65120RGTT is a four-output DC-DC converter designed specifically for TFT LCD panel bias. It takes a 2.5V to 5.5V input and generates the three or four supply rails a TFT display needs: a main output adjustable up to 20V, a negative rail adjustable down to -18V, and two auxiliary regulated outputs (3V to 5.6V). Without it, the junction temperature climbs fast under load.

Industrial temp range and adjustable rails

The wide input range (2.5V to 5.5V) lets it run from a single lithium cell or a 3.3V/5V system rail without a separate pre-regulator. The negative rail capability (adjustable down to -18V) is what separates this from single-output DDR converters like the TPS53317RGBR or TPS51100DGQ. Those parts are DDR memory termination regulators — one output, no negative rail.

Package rework and pad layout

The centre pad is the main heat path and the ground return — lift the part by heating from underneath the board, not by prying.

Frequently asked questions

Can TPS65120RGTT generate a negative output voltage?

Yes. The TPS65120RGTT includes a negative rail adjustable down to -18V, alongside a positive rail adjustable up to 20V and two auxiliary outputs in the 3V to 5.6V range. This makes it suitable for TFT LCD gate and source bias where a negative VGL rail is required.

Is TPS65120RGTT a replacement for TPS53317RGBR or TPS51100DGQ?

No. The TPS53317RGBR and TPS51100DGQ are single-output DDR memory termination regulators (VTT). The TPS65120RGTT is a four-output TFT LCD bias converter with positive and negative rails. They are not functional equivalents and cannot be swapped without a complete board redesign.