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LDK320AM120R

Public Made by Adom

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STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Contents

README

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LDK320AM120R

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

LDK320AM120R from STMicroelectronics, in a SOT-23-5. 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 IN power_in Input voltage supply with operating range from 2.5 to 18 V.
2 GND power_in Common ground reference.
3 EN input Enable pin logic input; low for shutdown, high for active mode.
4 ADJ/NC unconnected Not connected on fixed output version.
5 OUT power_out Fixed output voltage of 12 V with maximum output current of 200 mA.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-23-5
Category Power Management (PMIC)
Pins 5

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Operating input voltage VIN 2.5 18 V 6
VOUT accuracy, LDK320A VOUT -0.5 0.5 % TJ = 25 °C 6
VOUT accuracy, LDK320A VOUT -1.5 1.5 % -40 °C < TJ < 125 °C 6
Static line regulation ΔVOUT 0.001 0.05 %/V VOUT +1 V ≤ VIN ≤ 18 V 6
Static load regulation (SOT23-5L) ΔVOUT 0.001 0.003 %/mA IOUT = 1 mA to 200 mA, VOUT > 2 V 6
Dropout voltage VDROP 100 mV IOUT = 100 mA, VOUT = 3.3 V 6
Dropout voltage VDROP 200 350 mV IOUT = 200 mA, VOUT = 3.3 V, 40 °C < TJ < 125 °C 6
Output noise voltage eN 63 μVRMS/V 10 Hz to 100 kHz, IOUT = 10 mA 6
Supply voltage rejection SVR 88 dB f = 120 Hz, IOUT = 10 mA, VOUT = 3.3 V 6
Supply voltage rejection SVR 65 dB f = 1 kHz, IOUT = 10 mA, VOUT = 3.3 V 6
Supply voltage rejection SVR 48 dB f = 10 kHz, IOUT = 10 mA, VOUT = 3.3 V 6
Quiescent current IQ 60 90 μA VOUT +1 V ≤ VIN ≤ 18 V, IOUT = 0 mA, -40 °C < TJ < 125 °C 6
Quiescent current IQ 70 100 μA VIN = VOUT +1 V, IOUT = 200 mA, -40 °C < TJ < 125 °C 6
VIN input current in OFF mode 0.2 1 μA VEN = GND, TJ = 25 °C 6
Short-circuit current ISC 330 mA RL = 0 7
Short-circuit current ISC 200 mA RL = 0, VIN = 16 V 7
Enable input logic low VEN 0.4 V VIN = 2.5 V to 18 V, -40 °C < TJ < 125 °C 7
Enable input logic high VEN 1.2 V VIN = 2.5 V to 18 V, -40 °C < TJ < 125 °C 7
Enable pin input current IEN 0.1 100 nA VEN = VIN 7
Thermal shutdown TSHDN 160 °C 7
Thermal shutdown hysteresis 20 °C 7
Output capacitor capacitance COUT 1 22 µF Capacitance (see Section 6 Typical characteristics) 7
DC input voltage VIN -0.3 20 V 5
DC output voltage VOUT -0.3 V Upper limit printed as VI + 0.3 V 5
Enable input voltage VEN -0.3 V Upper limit printed as VI + 0.3 V 5
Storage temperature range TSTG -65 150 °C 5
Operating junction temperature range TOP -40 125 °C 5
Thermal resistance junction-ambient (SOT23-5L) RthJA 160 °C/W SOT23-5L 5
Thermal resistance junction-case (SOT23-5L) RthJC 68 °C/W SOT23-5L 5

CAD (KiCad official)

  • Symbol: LDK320AM120R
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ldk320am120r-etched.step / ldk320am120r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ldk320am120r.step / ldk320am120r.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (29 pp, sha256 37e7d72595decf69, retrieved 2026-09-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-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).

Datasheet PDF