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Texas Instruments TPS61103RGER — Power Management (PMIC / Gate Driver)

TPS61103RGER Dual-Output PMIC: Boost + LDO, 500kHz, Obsolete

MPNTPS61103RGER
Obsolete

Texas Instruments TPS61103RGER, dual-output power management IC: step-up boost synchronous converter (3.3V/1.8A) plus linear LDO (0.9-3.6V/500mA), 500kHz switching, -40°C to 85°C, 24-VQFN (4x4) package.

$2.1400Ref. price · indicative, final on quote
Texas Instruments TPS61103RGER datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS61103RGER specifications
ParameterValue
MountingSurface Mount
Supply voltage0.8V ~ 3.3V
Voltage/Current - output 13.3V, 1.8A
Voltage/Current - output 20.9V ~ 3.6V, 500mA
Frequency - switching500kHz
I/O channels2
Operating temperature-40°C~85°C
PackageTape & Reel (TR); Cut Tape (CT)
TopologyStep-Up (Boost) Synchronous (1), Linear (LDO) (1)
W (Sequencer)No
W (LED driver)No
W (Supervisor)No
Case24-VFQFN Exposed Pad

Product details

Dual-rail power manager for battery-operated designs

The Texas Instruments TPS61103RGER is a dual-output power management IC combining a synchronous step-up (boost) converter and a linear LDO regulator in a single 24-VQFN (4x4) package. The boost output delivers a regulated 3.3V at up to 1.8A, while the LDO provides a second adjustable rail from 0.9V to 3.6V at 500mA — enough for a small sensor node or portable instrument needing two supply voltages from one battery.

Boost rail: 3.3V at 1.8A, synchronous rectification

LDO rail: adjustable 0.9V to 3.6V at 500mA

The second output is a linear regulator with an adjustable output from 0.9V up to 3.6V. At 500mA it provides a clean, low-noise rail for analog or RF sections where the boost converter's ripple would be problematic. The LDO's input is taken from the boost output, so both rails share the same battery source.

Obsolete — plan for a replacement now

Confirm BOM fit and quantity before committing; the 24-VQFN footprint may be shared with other TI power devices in the same package, but pin compatibility should be verified against the target application.

Frequently asked questions

What is the replacement for TPS61103RGER?

No official replacement order code is listed. The part is obsolete, so for new designs evaluate current TI power management ICs with a boost converter plus LDO in a similar 24-VQFN package. Pin compatibility must be verified against the specific application circuit.