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Texas Instruments TPS2231MRGPR-1 — Power Management (PMIC / Gate Driver)

TPS2231MRGPR-1 ExpressCard Power Switch, 45 mOhm, Obsolete

MPNTPS2231MRGPR-1
Obsolete

Texas Instruments TPS2231MRGPR-1 ExpressCard™ power switch, 3 high-side outputs, 1.3 A max per channel, 45 mOhm typical Rds(on), 1.5 V / 3.3 V load, 20-QFN (4x4) package, -40°C to 85°C.

$1.2400Ref. price · indicative, final on quote
Texas Instruments TPS2231MRGPR-1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS2231MRGPR-1 specifications
ParameterValue
TypeExpressCard™ Switch
MountingSurface Mount
Voltage - load1.5V, 3.3V
Voltage - supply (Vcc (Vdd))Not Required
Output current1.3A
I/O channels3
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR)
FeaturesPower Good, Status Flag
Rds on45mOhm
Case20-VFQFN Exposed Pad
Fault protectionCurrent Limiting (Fixed), Over Temperature
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

ExpressCard power switch — what this part does

The Texas Instruments TPS2231MRGPR-1 is a high-side power-distribution switch designed specifically for ExpressCard™ slots. It integrates three outputs rated at 1.3 A each, with a typical on-resistance of 45 mOhm, and handles the dual-rail load of 1.5 V and 3.3 V that ExpressCard cards require. Built-in fault protection includes fixed current limiting and over-temperature shutdown, plus a power-good output and a status flag for system monitoring.

No official replacement or successor part is listed by the manufacturer. Any pin-compatible substitute will need to be validated against the ExpressCard power sequence and the 45 mOhm Rds(on) target, particularly the 1.3 A per-output current rating and the 1.5 V / 3.3 V rail combination.

Package and footprint — QFN rework notes

Frequently asked questions

What is the replacement for TPS2231MRGPR-1?

No official replacement or successor part is listed by Texas Instruments. A pin-compatible substitute would need to match the ExpressCard switch function, three high-side outputs at 1.3 A, 45 mOhm Rds(on), and dual 1.5 V / 3.3 V load rails. Validate any candidate against the original power-good and status-flag timing.

What are the key features of the TPS2231MRGPR-1?

The TPS2231MRGPR-1 is an ExpressCard power switch with three high-side outputs, each rated at 1.3 A. It includes power-good and status-flag outputs, fixed current limiting, and over-temperature protection.

What package does the TPS2231MRGPR-1 come in?

The TPS2231MRGPR-1 is supplied in a 20-VFQFN with exposed pad, also designated as 20-QFN (4x4). The only listed packaging option is Tape & Reel.