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Texas Instruments TPS61177ARGRR — Power Management (PMIC / Gate Driver)

TPS61177ARGRR LED Driver, DC DC Regulator, 6-Ch, 30mA

MPNTPS61177ARGRR
Active

Texas Instruments TPS61177ARGRR, DC DC Regulator, Step-Up (Boost) LED driver, 6 outputs, 30mA per channel, 4.5V to 39V output, 1.2MHz switching, Analog and PWM dimming, -40°C to 85°C, 20-VFQFN Exposed Pad package.

$2.1300Ref. price · indicative, final on quote
Texas Instruments TPS61177ARGRR datasheet (PDF)
Packaging20-VFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS61177ARGRR specifications
ParameterValue
TypeDC DC Regulator
MountingSurface Mount
Voltage - output4.5V ~ 39V
Voltage2.5V
Current - output (Channel)30mA
Frequency1.2MHz
I/O channels6
Operating temperature-40°C~85°C(TA)
DimmingAnalog, PWM
PackageTape & Reel (TR); Cut Tape (CT)
TopologyStep-Up (Boost)
ApplicationsBacklight
Case20-VFQFN Exposed Pad
Internal switchYes

Product details

Six-channel boost LED driver for backlight panels

The TPS61177ARGRR is a DC DC Regulator LED driver using a step-up (boost) topology. It integrates six regulated current sinks, each rated for 30 mA, and an internal switch. Output voltage spans 4.5 V to 39 V, which covers the forward-voltage stack of typical LCD backlight strings — six to ten series LEDs per channel depending on the LED Vf. Switching frequency is fixed at 1.2 MHz, keeping the inductor and output capacitor small enough for slim panel assemblies. Dimming is supported through both analog and PWM methods, giving the system designer a choice between continuous current adjustment and duty-cycle-based brightness control.

What the output count and current mean for the BOM

Six independent channels at 30 mA each can handle up to six separate LED strings.

Surface-mount assembly is standard; the package is a QFN-style with wettable flanks for solder-joint inspection.

Frequently asked questions

Does TPS61177ARGRR support analog dimming?

Yes, the TPS61177ARGRR supports both analog and PWM dimming methods. Analog dimming adjusts the LED current continuously, while PWM dimming switches the current on and off at a duty cycle for brightness control.

Is TPS61177ARGRR RoHS compliant?

Yes, the TPS61177ARGRR is ROHS3 compliant, meeting the latest RoHS directive requirements for lead-free and restricted-substance limits.

Can TPS61177ARGRR replace TPS61175?

The TPS61177ARGRR and TPS61175 are different devices. The TPS61177ARGRR is a six-channel, 30 mA per channel LED driver with a 39 V output ceiling. The TPS61175 is a different part number — verify the pinout, output count, and current rating before substituting. No direct replacement claim is made by the manufacturer.