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Texas Instruments TPS61043DRBT — Power Management (PMIC / Gate Driver)

TPS61043DRBT LED Driver, DC-DC Boost Regulator, 1 MHz, 60 mA

MPNTPS61043DRBT
Active

Texas Instruments TPS61043DRBT, DC DC Regulator, Step-Up (Boost), 1 MHz, 1 Output, 60 mA, 8-VDFN Exposed Pad, -40°C~85°C.

$1.5800Ref. price · indicative, final on quote
Texas Instruments TPS61043DRBT datasheet (PDF)
Packaging8-VDFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS61043DRBT specifications
ParameterValue
TypeDC DC Regulator
MountingSurface Mount
Voltage - output16.9V
Voltage1.8V
Current - output (Channel)60mA
Frequency1MHz
I/O channels1
Operating temperature-40°C~85°C(TA)
DimmingPWM
PackageTape & Reel (TR); Cut Tape (CT)
TopologyStep-Up (Boost)
ApplicationsBacklight
Case8-VDFN Exposed Pad
Internal switchYes

Product details

Boost regulator for small-panel LED backlights

The TPS61043DRBT is a DC-DC boost regulator for LED backlight strings. It integrates the switching FET internally, uses a fixed 16.9 V output, and supports PWM dimming.

Switching at 1 MHz — inductor sizing and layout

The 1 MHz switching frequency suits a small inductor. The 8-SON package is surface-mount. At 60 mA per channel, power dissipation is modest.

Supply range and output compliance

The 16.9 V output is fixed. The 60 mA per channel is the current limit; actual LED current is set by the sense resistor.

The 8-SON (3x3 mm) package is surface-mount only — no through-hole option. ROHS3 compliance is current; no lead or halide exemptions to track for end-of-life reporting.

Lifecycle status is Active — no NRND or EOL flags on this base product number.

Frequently asked questions

Does TPS61043DRBT have an internal switch?

Yes, the device integrates the switching FET internally, so no external MOSFET is needed for the boost stage.

How to dim an LED using TPS61043DRBT?

Dimming is done via PWM on the control pin. Applying a PWM signal to the enable or dimming input modulates the LED current on/off at the PWM frequency, adjusting perceived brightness without audible inductor noise.

What is the TPS61043DRBT equivalent part?

A functional peer is the LM2703MF-ADJ/NOPB from TI — also a step-up DC-DC regulator with internal switch for backlight applications, but with an adjustable output and 0.35 A current capability. The TPS61043DRBT has a fixed 16.9 V output and 60 mA per channel, so the two are not drop-in replacements; verify the output voltage and current requirements before substituting.