Comparison page

TP4056 vs ULN2003

Side-by-side selection notes for specs, ecosystem readiness, known issues, and data confidence. This page is generated from structured component fields instead of a hand-written article.

TP4056

Projects needing Li-ion charger and Cheap module with a commonly available power part.

ULN2003

Projects needing Driver array and Stepper kit with a commonly available power part.

Specification Matrix

DimensionTP4056 ULN2003

CategoryPowerPower

MakerNanJing Top PowerTexas Instruments

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesNeeds verificationArduino

Price$0.10 - $0.50$0.10 - $0.60

Known Tradeoffs

TP4056

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

ULN2003

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

Open Individual Model Pages

TP4056

NanJing Top Power

Very common single-cell lithium battery linear charger used in low-cost charging modules.

China-madePower78% confidence

ULN2003

Texas Instruments

Darlington transistor array often sold with 28BYJ-48 stepper motor kits.

China-madePower82% confidence