component

LM317LIPW

Public Made by Adom

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Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM317LIPW

Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TSSOP-8

LM317LIPW from Texas Instruments, in a TSSOP-8. 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 INPUT power_in Unregulated supply input; the datasheet recommends an input-to-output differential of 2.5 V to 37 V and gives an absolute maximum input-to-output differential of 45 V for the new die (CSO: RFB).
2 NC unconnected No internal connection; the datasheet recommends grounding this pin for better thermal performance but states it is not required.
3 NC unconnected No internal connection; the datasheet recommends grounding this pin for better thermal performance but states it is not required.
4 ADJUSTMENT input Feedback (adjust) terminal that sets the output voltage through an external two-resistor divider, with the output held 1.22 V to 1.292 V above this pin for the new die (1.25 V nominal) and an adjustment current typically 44 µA.
5 NC unconnected No internal connection; the datasheet recommends grounding this pin for better thermal performance but states it is not required.
6 OUTPUT power_out Regulated output that supplies 2.5 mA to 100 mA of load current across the 1.25 V to 37 V output range, with the output pins internally connected to one another.
7 NC unconnected No internal connection; the datasheet recommends grounding this pin for better thermal performance but states it is not required.
8 NC unconnected No internal connection; the datasheet recommends grounding this pin for better thermal performance but states it is not required.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-8
Category Power Management (PMIC)
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Line regulation 0.01 0.02 %/V VI – VO = 5V 至 35V, TJ = 25°C 5
Line regulation 0.02 0.05 %/V VI – VO = 5V 至 35V, IO = 2.5mA 至 100mA 5
Ripple rejection 55 dB VO = 10V, f = 120Hz 5
Ripple rejection 66 80 dB VO = 10V，在调节端与接地端之间使用 10μF 电容器，f = 120Hz 5
Output voltage regulation (VO ≤ 5 V) 25 mV VI – VO = 5V 至 35V，TJ = 25°C，IO = 2.5mA 至 100mA，VO ≤ 5 V 6
Output voltage regulation (VO ≥ 5 V) 5 mV/V VI – VO = 5V 至 35V，TJ = 25°C，IO = 2.5mA 至 100mA，VO ≥ 5 V 6
Output voltage regulation (VO ≤ 5 V) 50 mV VI – VO = 5V 至 35V，IO = 2.5mA 至 100mA，VO ≤ 5 V 6
Output voltage regulation (VO ≥ 5 V) 10 mV/V VI – VO = 5V 至 35V，IO = 2.5mA 至 100mA，VO ≥ 5 V 6
Output voltage change with temperature 10 mV/V TJ = 0°C 至 125°C 6
Long-term drift 3 10 mV/V 1000 小时后，TJ = 125°C 且 VI – VO = 35V 6
Output noise voltage 10 µV/V f = 10Hz 至 10kHz，TJ = 25°C 6
Minimum output current to maintain regulation 1.5 2.5 mA VI – VO = 35V 6
Peak output current 100 200 mA VI – VO ≤ 35V 6
Adjustment pin current 50 100 µA 6
Adjustment pin current change 0.2 5 µA VI – VO = 2.5V 至 35V，IO = 2.5mA 至 100mA 6
Reference voltage (output to adjust) 1.2 1.25 1.3 V VI – VO = 5.0V 至 35V，IO = 2.5mA 至 100mA，P ≤ 额定耗散 6
Output voltage VO Vo 1.25 32 V 旧芯片 (CSO:SHE) 4
Input-to-output differential voltage VI - VO 2.5 32 V 旧芯片 (CSO:SHE) 4
Output current IO 2.5 100 mA 4
Operating junction temperature TJ -40 125 °C LM317LI 4
Input-to-output differential voltage VI - VO 35 V 旧芯片 (CSO:SHE) 4
Operating junction temperature TJ 150 °C 4
Storage temperature Tstg -65 150 °C 旧芯片 (CSO:SHE) 4
Junction-to-ambient thermal resistance (TSSOP, 8-pin, PW) RθJA 149.4 °C/W 旧芯片 (CSO:SHE) 5

CAD (KiCad official)

  • Symbol: LM317LIPW
  • Footprint: Package_SO:TSSOP-8_3x3mm_P0.65mm
  • 3D model: TSSOP-8 (KiCad packages3D, STEP)
  • 3D model files: lm317lipw-etched.step / lm317lipw-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm317lipw.step / lm317lipw.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (39 pp, sha256 d5c5d34eb4738e79, retrieved 2026-10-11, 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF