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STMicroelectronics STP4CMPQTR — DC-DC Power Modules

STP4CMPQTR LED Driver, DC-DC Regulator, 4-Ch 30mA PWM

MPNSTP4CMPQTR
End of Life

STMicroelectronics STP4CMPQTR, DC-DC Regulator LED Driver, Switched Capacitor (Charge Pump), 4 Outputs, 30mA per channel, PWM Dimming, 2.7V-5.5V Supply, 3.8V Output, Surface Mount 20-QFN (3.2x1.8), -40°C to 85°C.

$2.24Ref. price · indicative, final on quote
STMicroelectronics STP4CMPQTR datasheet (PDF)
Packaging20-UFQFN
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STP4CMPQTR specifications
ParameterValue
TypeDC DC Regulator
MountingSurface Mount
Voltage - output3.8V
Voltage5.5V
Current - output (Channel)30mA
I/O channels4
Operating temperature-40°C ~ 85°C (TA)
DimmingPWM
PackageTape & Reel (TR); Cut Tape (CT)
TopologySwitched Capacitor (Charge Pump)
ApplicationsBacklight
Case20-UFQFN
Internal switchYes

Product details

The STP4CMPQTR is a 4-channel LED driver using a switched-capacitor (charge pump) DC-DC regulator. It delivers up to 30 mA per channel at 3.8 V output, with PWM dimming.

Four outputs at 30 mA each. For a 3.8 V backlight string, each channel drives a single LED or small parallel group. The 30 mA per channel is the ceiling; PWM dimming reduces brightness without wasting power.

The 20-QFN package is a standard surface-mount footprint; reflow profile follows the usual lead-free (ROHS3,) curve. No special handling beyond standard MSL precautions.

Sourcing and lifecycle reality

Frequently asked questions

How does STP4CMPQTR compare to TPS61165?

TPS61165 is a single-channel boost converter with a 40 V output switch, targeting larger backlight strings or series-LED arrays. STP4CMPQTR is a 4-channel charge-pump regulator at 3.8 V fixed output — it fits smaller, low-voltage parallel-LED backlights where board area and inductor elimination matter more than high-voltage drive.