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TPA3138D2PWPR
Public Made by Adomby adom
Texas Instruments Audio Amplifiers, TSSOP-28-EP. 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
markdownTPA3138D2PWPR
Texas Instruments · Audio Amplifiers · TSSOP-28-EP
TPA3138D2PWPR from Texas Instruments, in a TSSOP-28-EP. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No Connect Pin; can be shorted to PVCC, shorted to GND, or left open. |
| 2 | SD/FAULT | bidirectional | Shutdown control and fault reporting output with TTL logic compliance to AVCC; LOW disables outputs to Hi-Z and enters low-current shutdown state, HIGH enables normal operation and reports Over-Temp, Over-Current, DC Detect faults with auto-recovery. |
| 3 | LINP | input | Positive audio input for left channel, biased at 2.5 V; connect to GND for PBTL mode operation. |
| 4 | LINN | input | Negative audio input for left channel, biased at 2.5 V; connect to GND for PBTL mode operation. |
| 5 | GAIN_SEL | input | Gain select least significant bit with TTL logic compliance to AVDD; LOW sets 20 dB gain, HIGH sets 26 dB gain, floating defaults to 26 dB gain. |
| 6 | MODE_SEL | input | Mode select least significant bit with TTL logic compliance to AVDD; LOW sets BD Mode with 7.5 V UVP threshold, HIGH or floating sets 1SPW mode with 3.4 V UVP threshold. |
| 7 | AVCC | power_in | Analog power supply, 3.5 V to 14.4 V; add 1 μF decoupling capacitor to ground. |
| 8 | GND | power_in | Analog signal ground. |
| 9 | GVDD | power_out | FET gate drive supply output with nominal 5 V; add 1 μF capacitor to ground at this pin. |
| 10 | PLIMIT | input | Power limiter level control input; connect resistor divider from GVDD to GND to set power limit, or connect directly to GVDD for no power limiting. |
| 11 | RINN | input | Negative audio input for right channel, biased at 2.5 V. |
| 12 | RINP | input | Positive audio input for right channel, biased at 2.5 V. |
| 13 | NC | unconnected | No Connect Pin; can be shorted to PVCC, shorted to GND, or left open. |
| 14 | AGND | power_in | Analog signal ground; must be connected to the thermal pad for best thermal and electrical performance. |
| 15 | PVCCR | power_in | Power supply for right channel H-bridge, 3.5 V to 14.4 V; internally connected with left channel PVCC. |
| 16 | PVCCR | power_in | Power supply for right channel H-bridge, 3.5 V to 14.4 V; internally connected with left channel PVCC. |
| 17 | BSPR | power_in | Bootstrap supply for right channel positive high-side FET; connect 0.22 μF capacitor from OUTPR to BSPR. |
| 18 | OUTPR | output | Class-D H-bridge positive output for right channel. |
| 19 | GND | power_in | Power ground for the H-bridges. |
| 20 | OUTNR | output | Class-D H-bridge negative output for right channel. |
| 21 | BSNR | power_in | Bootstrap supply for right channel negative high-side FET; connect 0.22 μF capacitor from OUTNR to BSNR. |
| 22 | BSNL | power_in | Bootstrap supply for left channel negative high-side FET; connect 0.22 μF capacitor from OUTNL to BSNL. |
| 23 | OUTNL | output | Class-D H-bridge negative output for left channel. |
| 24 | GND | power_in | Power ground for the H-bridges. |
| 25 | OUTPL | output | Class-D H-bridge positive output for left channel. |
| 26 | BSPL | power_in | Bootstrap supply for left channel positive high-side FET; connect 0.22 μF capacitor from OUTPL to BSPL. |
| 27 | PVCCL | power_in | Power supply for left channel H-bridge, 3.5 V to 14.4 V; internally connected with right channel PVCC. |
| 28 | PVCCL | power_in | Power supply for left channel H-bridge, 3.5 V to 14.4 V; internally connected with right channel PVCC. |
| 29 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-28-EP |
| Category | Amplifiers/Comparators |
| Pins | 29 |
CAD (KiCad official)
- Symbol:
TPA3138D2PWPR - Footprint:
Package_SO:TSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP2.85x6.7mm - 3D model: TSSOP-28-EP (KiCad packages3D, STEP)
- 3D model files:
tpa3138d2pwpr-etched.step/tpa3138d2pwpr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpa3138d2pwpr.step/tpa3138d2pwpr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (37 pp, sha256
281fbddb49687ce9, retrieved 2026-09-23, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).