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LM2576S-ADJRG

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HANSCHIP semiconductor DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM2576S-ADJRG

HANSCHIP semiconductor · DC-DC Converters · TO-263-5

LM2576S-ADJRG from HANSCHIP semiconductor, in a TO-263-5. 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 VIN power_in Unregulated supply input; maximum 40 V for LM2576 and 55 V for LM2576HV.
2 Output output Switch output of the regulator; output voltage to ground (steady state) is limited to -1 V.
3 Ground power_in Ground pin; the package tab is also ground.
4 Feedback input Feedback input for the adjustable version with a 1.23 V reference, with bias current typically 50 nA.
5 ON/OFF input Active-low shutdown input, TTL compatible, with 50 uA typical standby current and input range -0.3 V to VIN.
6 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer HANSCHIP semiconductor
Package TO-263-5
Category Power Management (PMIC)
Pins 6

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage (adjustable, VIN=12V, Iload=0.5A) VOUT 1.217 1.23 1.243 V VIN = 12V, I load = 0.5A, VOUT = 5V 6
Output voltage (LM2576, 25°C) VOUT 1.193 1.23 1.267 V 8V ≤ VIN ≤ 40V, 0.5A ≤ I load ≤ 3A, VOUT = 5V; TJ=25°C 6
Output voltage (LM2576, full operating junction temperature range) VOUT 1.18 1.23 1.28 V 8V ≤ VIN ≤ 40V, 0.5A ≤ I load ≤ 3A, VOUT = 5V; full operating junction temperature range 6
Feedback bias current (25°C) Ib 50 100 nA VOUT = 5V (adjustable models only); TJ=25°C 7
Feedback bias current (full temperature range) Ib 50 500 nA VOUT = 5V (adjustable models only); full operating junction temperature range 7
Oscillator frequency (25°C) fO 47 52 58 kHz note 11; TJ=25°C 7
Oscillator frequency (full temperature range) fO 42 52 63 kHz note 11; full operating junction temperature range 7
Saturation voltage (25°C) VSAT 1.4 1.8 V IOUT = 3A (note 4); TJ=25°C 7
Saturation voltage (full temperature range) VSAT 1.4 2 V IOUT = 3A (note 4); full operating junction temperature range 7
Duty cycle, maximum (on) DC 93 98 % note 5: feedback pin disconnected from output and tied to 0V 7
Current limit (25°C) ICL 4.2 5.8 6.9 A notes 4, 11; TJ=25°C 7
Current limit (full temperature range) ICL 3.5 5.8 7.5 A notes 4, 11; full operating junction temperature range 7
Quiescent current IQ 5 10 mA note 6 7
Standby quiescent current ISTBY 50 200 µA ON/OFF pin = 5V (OFF) 7
ON/OFF control logic input level high (25°C) VIH 2.2 1.4 V VOUT = 0V; TJ=25°C 7
ON/OFF control logic input level high (full temperature range) VIH 2.4 1.4 V VOUT = 0V; full operating junction temperature range 7
ON/OFF control logic input level low (25°C) VIL 1.2 1 V VOUT = nominal input voltage; TJ=25°C 7
ON/OFF control logic input level low (full temperature range) VIL 1.2 0.8 V VOUT = nominal input voltage; full operating junction temperature range 7
ON/OFF control input current high IIH 12 30 µA ON/OFF control = 5V (OFF) 7
ON/OFF control input current low IIL 0 10 µA ON/OFF control = 0V (ON) 7
Absolute maximum supply voltage LM2576 VIN 40 V LM2576 (non-HV) 4
ON/OFF pin input voltage VON_OFF -0.3 V -0.3 ≤ V ≤ +VIN (upper limit printed as +VIN) 4
Output voltage to ground (steady state) -1 V steady state, to ground 4
Storage temperature range TSTG -65 150 °C 4
Maximum junction temperature TJ 150 °C 4
ESD rating ESD 2 kV C = 100 pF, R = 1.5 kΩ 4
Lead temperature (soldering) TLEAD 245 °C 10 s soldering 4
Supply voltage LM2576 (recommended) VIN 40 V LM2576 (non-HV) 5
Operating junction temperature range TA -40 125 °C 5
Thermal resistance, junction to ambient (TO-263) RθJA 42.6 °C/W TO-263 package 5
Thermal resistance, junction to case (top) (TO-263) RθJC(top) 43.3 °C/W TO-263 package 5
Thermal resistance, junction to board (TO-263) RθJB 22.4 °C/W TO-263 package 5
Junction-to-top characterization parameter (TO-263) ψJT 10.7 °C/W TO-263 package 5
Junction-to-board characterization parameter (TO-263) ψJB 21.3 °C/W TO-263 package 5
Thermal resistance, junction to case (bottom) (TO-263) RθJC(bot) 0.4 °C/W TO-263 package 5
Thermal resistance, junction to ambient (S package) θJA 50 °C/W S package (TO-263); 0.5 sq in copper area (note 10) 7

CAD (KiCad official)

  • Symbol: LM2576S-ADJRG
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: lm2576s-adjrg-etched.step / lm2576s-adjrg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2576s-adjrg.step / lm2576s-adjrg.glb are the bare package body.

Provenance

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

  • Datasheet: HANSCHIP semiconductor datasheet (13 pp, sha256 49a38e15b1d76c58, retrieved 2026-10-18, 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-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