Skip to main content
Log in
Texas Instruments TPS61040DRVR — Power Management (PMIC / Gate Driver)

TPS61040DRVR Texas Instruments LED Driver, DC DC Regulator

MPNTPS61040DRVR
Active

Texas Instruments TPS61040DRVR, DC DC Regulator, Step-Up (Boost) topology, 350 mA switch current, 28 V output, 1 MHz switching frequency, PWM dimming, 6-WSON (2x2) package.

$1.6900Ref. price · indicative, final on quote
Texas Instruments TPS61040DRVR datasheet (PDF)
Packaging6-WDFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS61040DRVR specifications
ParameterValue
TypeDC DC Regulator
MountingSurface Mount
Voltage - output28V
Voltage1.8V
Current - output (Channel)350mA (Switch)
Frequency1MHz
I/O channels1
Operating temperature-40°C~85°C(TA)
DimmingPWM
PackageTape & Reel (TR); Cut Tape (CT)
TopologyStep-Up (Boost)
ApplicationsBacklight
Case6-WDFN Exposed Pad
Internal switchYes

Product details

What this boost LED driver does on your board

The TPS61040DRVR is a DC DC Regulator built for driving LEDs in backlight applications — it steps up a low input voltage to a regulated 28 V output, switching at 1 MHz to keep the inductor small. The internal switch handles 350 mA peak, which means you can drive a string of series-connected white LEDs without adding an external transistor. PWM dimming is supported directly on the enable pin, so the microcontroller can control brightness without an extra DAC or PWM generator.

Supply rails and temperature range

Input voltage spans 1.8 V to 6 V, covering single-cell Li-Ion, two alkaline cells, or a 3.3 V / 5 V rail — the minimum 1.8 V lets it run from a nearly depleted battery.

Surface-mount only; no through-hole variant exists. The small footprint makes it a fit for compact portable or display assemblies.

Frequently asked questions

What is the maximum output current of TPS61040DRVR?

The internal switch is rated for 350 mA peak. That is the current the switch can handle, not the LED current — the actual LED current depends on the external sense resistor and the boost ratio. For a typical white-LED string at 28 V, expect around 20-30 mA per channel.

Does TPS61040DRVR require external switching transistors?

No — the device has an internal switch (listed as Internal Switch(s): Yes), so the boost converter is self-contained. Only the inductor, diode, output capacitor, and sense resistor are needed externally.

What is the closest functional second-source to TPS61040DRVR?

The LM2703MF-ADJ/NOPB is a pin-to-pin functional alternate: same boost topology, same 350 mA switch current, same single-output configuration. Check the package footprint match before swapping.