component

HLM337BTG

Public Made by Adom

by adom

HXY MOSFET Linear Voltage Regulators (LDO), TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icshlm337btgfactory-2.0.0extractor-text
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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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Contents

README

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HLM337BTG

HXY MOSFET · Linear Voltage Regulators (LDO) · TO-220

HLM337BTG from HXY MOSFET, in a TO-220. 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 from ADJ to VOUT and R2 from ADJ to ground), with a typical ADJ pin current of 65 µA.
2 VIN power_in Negative input voltage pin; the input-output voltage differential
3 VOUT power_out Regulated negative output voltage pin, adjustable from -1.25 V to -37 V at up to 1.5 A, and it needs an output capacitor for stability (C1 = 1 µF solid tantalum or 10 µF aluminum electrolytic).

Key specifications

Parameter Value
Manufacturer HXY MOSFET
Package TO-220
Category Power Management ICs
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 Rline 0.01 0.05 %/V TA = +25°C, 3V ≤ /VI - VO/ ≤ 40V 3
Line Regulation Rline 0.02 0.07 %/V 3V ≤ /VI - VO/ ≤ 40V 3
Load Regulation Rload 0.3 1 % TA = +25°C, 10mA ≤ IO ≤ 0.5A 3
Load Regulation 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 10mA ≤ IO ≤ 1.5A, 3V ≤ /VI - VO/ ≤ 40V, TA = +25°C 3
Reference Voltage VREF -1.275 -1.25 -1.225 V TA = +25°C, 3V ≤ /VI - VO/ ≤ 40V 3
Reference Voltage VREF -1.3 -1.25 -1.2 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
Long Term Stability ST 0.3 1 % TJ = 125°C, 1000Hours 3
Ripple Rejection Ratio RR 66 77 dB VO = -10V, f = 120Hz, CADJ = 10µF 3
Ripple Rejection Ratio RR 60 dB VO = -10V, f = 120Hz 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
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
Temperature Coefficient 50 ppm/°C 1

CAD (KiCad official)

  • Symbol: HLM337BTG
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: hlm337btg-etched.step / hlm337btg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hlm337btg.step / hlm337btg.glb are the bare package body.

Provenance

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

  • Datasheet: HXY MOSFET datasheet (6 pp, sha256 f1c1a9a38ef0bd28, retrieved 2026-10-27, 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