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HLM337IMP

Public Made by Adom

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HXY MOSFET Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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HLM337IMP

HXY MOSFET · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

HLM337IMP from HXY MOSFET, in a SOT-223. 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 ADJ input Adjustment pin; the output voltage is set by two external resistors (120 Ω and R2) with this pin and a 10 µF CADJ may be connected from it to ground for ripple rejection.
2 VIN power_in Negative input voltage; the input-output differential
3 VOUT power_out Negative regulated output voltage from -1.25 V to -37 V at up to 1.5 A, requiring an output capacitor of at least 1 µF tantalum or 10 µF aluminum electrolytic for stability.

Key specifications

Parameter Value
Manufacturer HXY MOSFET
Package SOT-223
Category Power Management (PMIC)
Pins 3

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 (Note1) Rline 0.01 0.05 %/V TA = +25°C; 3V ≤ /VI - VO/ ≤ 40V 3
Line Regulation (Note1) Rline 0.02 0.07 %/V 3V ≤ /VI - VO/ ≤ 40V 3
Load Regulation (Note1) Rload 0.3 1 % TA = +25°C; 10mA ≤ IO ≤ 0.5A 3
Load Regulation (Note1) Rload 0.3 1.5 % 10mA ≤ IO ≤ 1.5A 3
Adjustable Pin Current IADJ 65 100 µA 3
Adjustable Pin Current Change ΔIADJ 2 5 µA TA = +25°C; 10mA ≤ IO ≤ 1.5A; 3V ≤ /VI - VO/ ≤ 40V 3
Reference Voltage VREF -1.225 -1.25 -1.275 V 3V ≤ /VI - VO/ ≤ 40V; 10mA ≤ IO ≤ 1.5A 3
Reference Voltage VREF -1.2 -1.25 -1.3 V 3V ≤ /VI - VO/ ≤ 40V; 10mA ≤ IO ≤ 1.5A 3
Minimum Load Current to Maintain Regulation IL(MIN) 2.5 5 mA 3V ≤ /VI - VO/ ≤ 40V 3
Minimum Load Current to Maintain Regulation IL(MIN) 1.2 3 mA 3V ≤ /VI - VO/ ≤ 10V 3
Ripple Rejection Ratio RR 66 77 dB VO = -10V, f = 120Hz; CADJ = 10µF (Note2) 3
Long Term Stability ST 0.3 1 % TJ = 125°C, 1000 Hours 3
Temperature Stability ST 0.6 % 0°C ≤ TJ ≤ +125°C 3
Output Noise eN 0.003 V/106 TA = +25°C; 10Hz ≤ f ≤ 10KHz 3
Ripple Rejection Ratio RR 60 dB VO = -10V, f = 120Hz 3
Thermal Resistance Junction to Case RθJC 4 °C/W 3
Input-Output Voltage Differential /VI - VO/ 40 V 2
Operating Temperature Range TOPR 0 125 °C 2
Storage Temperature Range TSTG -65 125 °C 2

CAD (KiCad official)

  • Symbol: HLM337IMP
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: hlm337imp-etched.step / hlm337imp-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hlm337imp.step / hlm337imp.glb are the bare package body.

Provenance

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

  • Datasheet: HXY MOSFET datasheet (6 pp, sha256 0fe810a7f01a36ac, retrieved 2026-10-20, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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