component
INA209AIPWR
Public Made by Adomby adom
Texas Instruments Current Sense Amplifiers, TSSOP-16. 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
markdownINA209AIPWR
Texas Instruments · Current Sense Amplifiers · TSSOP-16
INA209AIPWR from Texas Instruments, in a TSSOP-16. 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 | VIN+ | power_in | Positive differential shunt voltage input; connect to positive side of shunt resistor; voltage range ±40mV to ±320mV depending on PGA gain setting; common-mode range 0V to 26V. |
| 2 | VIN- | power_in | Negative differential shunt voltage input; connect to negative side of shunt resistor; bus voltage measured from this pin to ground; common-mode range 0V to 26V. |
| 3 | Convert | input | Digital input to trigger conversions in triggered mode; normally held high, take low for minimum 4µs to initiate conversion; tie high if unused. |
| 4 | GND | power_in | Ground connection; must be connected together with pin 11 to system ground. |
| 5 | VS+ | power_in | Power supply input; supply voltage range 3V to 5.5V; draw maximum 1.5mA quiescent current; connect together with pin 10. |
| 6 | GPIO | bidirectional | General-purpose input/output with totem-pole output topology; user-programmable via Critical DAC+ register; default state is high-impedance input; can be configured as output 0, output 1, or Hi-Z. |
| 7 | Critical | tri_state | Open-drain critical watchdog output; active-low; transparent (non-latched) by default; responds to Critical DAC comparator within 5µs of overload condition detection. |
| 8 | Overlimit | tri_state | Open-drain over-limit watchdog output; active-low; transparent (non-latched) by default; responds to over-limit comparator thresholds for bus voltage and power limits. |
| 9 | Warning | tri_state | Open-drain warning watchdog output; active-low; transparent (non-latched) by default; responds to warning comparator thresholds with programmable delay 0 to 1.5s. |
| 10 | VS+ | power_in | Power supply input; supply voltage range 3V to 5.5V; draw maximum 1.5mA quiescent current; connect together with pin 5. |
| 11 | GND | power_in | Ground connection; must be connected together with pin 4 to system ground. |
| 12 | SCL | bidirectional | I²C serial bus clock line; open-drain; supports fast (400kHz) and high-speed (3.4MHz) modes; integrated spike suppression and Schmitt trigger; 28ms SMBus timeout. |
| 13 | SDA | bidirectional | I²C serial bus data line; open-drain; supports fast (400kHz) and high-speed (3.4MHz) modes; integrated spike suppression and Schmitt trigger; 28ms SMBus timeout. |
| 14 | A0 | input | Address input pin; sets slave address bits A0 for I²C bus addressing; sampled at start of each communication; configure via pull-up to VS+ or pull-down to GND. |
| 15 | A1 | input | Address input pin; sets slave address bits A1 for I²C bus addressing; sampled at start of each communication; configure via pull-up to VS+ or pull-down to GND. |
| 16 | SMBus Alert | tri_state | Open-drain SMBus alert output; active-low; responds to warning, over-limit, critical faults, or conversion ready states; latched and cleared by status register read or alert response; controlled via SMBus Alert Mask/Enable Control Register. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Amplifiers/Comparators |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
INA209AIPWR - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
ina209aipwr-etched.step/ina209aipwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina209aipwr.step/ina209aipwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (50 pp, sha256
fc088bc8d26a494f, retrieved 2026-09-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).