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Texas Instruments TPS61169DCKR — DC-DC Power Modules

TPS61169DCKR LED Backlight Driver, Boost, 1.2 MHz, SC-70-5

MPNTPS61169DCKR
Active

Texas Instruments TPS61169DCKR, DC-DC boost regulator, 1.2 MHz switching frequency, 1.8 A integrated switch, PWM dimming, SC-70-5 package, -40°C to 125°C operating temperature.

$1.0000Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS61169DCKR specifications
ParameterValue
TypeDC DC Regulator
MountingSurface Mount
Supply voltage5.5V
Current - output (Channel)1.8A (Switch)
Frequency1.2MHz
I/O channels1
Operating temperature-40°C~125°C(TJ)
DimmingPWM
PackageTape & Reel (TR); Cut Tape (CT)
TopologyStep-Up (Boost)
ApplicationsBacklight
Case5-TSSOP, SC-70-5, SOT-353
Internal switchYes

Product details

Boost regulator for single-string LED backlight

The Texas Instruments TPS61169DCKR is a current-mode step-up (boost) DC-DC regulator designed to drive a single string of white LEDs for display backlight applications. PWM dimming input allows direct brightness control from a microcontroller or PWM source, eliminating the need for an external DAC or analog dimming circuit.

1.2 MHz switching frequency and inductor selection

The 1.2 MHz switching frequency keeps the inductor small and pushes switching noise above the audible band.

Frequently asked questions

What is the switching frequency of TPS61169?

The switching frequency is 1.2 MHz. This allows small inductor values and keeps switching noise above the audio band.

How many outputs does TPS61169 support?

The TPS61169DCKR has a single output — it drives one LED string. For multi-string backlights, multiple devices or a multi-channel driver would be needed.