component
INA253A3IPWR
Public Made by Adomby adom
Texas Instruments Current Sense Amplifiers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownINA253A3IPWR
Texas Instruments · Current Sense Amplifiers · TSSOP-20
INA253A3IPWR from Texas Instruments, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | IS- | input | Analog input connected to the load side of the internal shunt; connect to the load. |
| 2 | IS- | input | Analog input connected to the load side of the internal shunt; connect to the load. |
| 3 | IS- | input | Analog input connected to the load side of the internal shunt; connect to the load. |
| 4 | SH- | output | Kelvin connection to the internal shunt; connect to IN- if no filtering is needed. |
| 5 | IN- | input | Voltage input from the load side of the shunt resistor. |
| 6 | GND | power_in | Ground reference for the device. |
| 7 | DNC1 | unconnected | Do not connect this pin to any potential; leave it floating. |
| 8 | NC | unconnected | No connect. |
| 9 | VS | power_in | Analog power supply, 2.7 V to 5.5 V. |
| 10 | REF2 | input | Reference voltage 2 input, 0 V to VS; do not connect to any voltage below GND or above VS. |
| 11 | REF1 | input | Reference voltage 1 input, 0 V to VS; do not connect to any voltage below GND or above VS. |
| 12 | NC | unconnected | No connect. |
| 13 | OUT | output | Analog output voltage. |
| 14 | DNC2 | unconnected | Do not connect this pin to any potential; leave it floating. |
| 15 | NC | unconnected | Reserved analog pin; the datasheet says to connect it to ground. |
| 16 | IN+ | input | Voltage input from the supply side of the shunt resistor. |
| 17 | SH+ | output | Kelvin connection to the internal shunt; connect to IN+ if no filtering is needed. |
| 18 | IS+ | input | Analog input; connect to the supply. |
| 19 | IS+ | input | Analog input; connect to the supply. |
| 20 | IS+ | input | Analog input; connect to the supply. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-20 |
| Category | Amplifiers/Comparators |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
INA253A3IPWR - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
ina253a3ipwr-etched.step/ina253a3ipwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina253a3ipwr.step/ina253a3ipwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (36 pp, sha256
aac4f0956c4235a7, retrieved 2026-10-08, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).