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LM2576DP-ADJ

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HTC Korea TAEJIN Tech DC-DC Converters, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM2576DP-ADJ

HTC Korea TAEJIN Tech · DC-DC Converters · ESOP-8

LM2576DP-ADJ from HTC Korea TAEJIN Tech, in a ESOP-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 VIN power_in Positive input supply for the step-down regulator; a suitable input bypass capacitor must be present to minimize voltage transients, and the datasheet gives a 40 V operating supply maximum (45 V absolute maximum).
2 VOUT output Emitter of the internal output switch with a typical saturation voltage of 1.5 V; keep the PCB area on this pin to a minimum to reduce coupling into sensitive circuitry.
3 FEEDBACK input Senses the regulated output and closes the feedback loop; in the adjustable version it is the direct input of the error amplifier, with external R1/R2 setting Vout = Vref(1.0 + R2/R1) where Vref = 1.23 V.
4 ON/OFF input Logic-level shutdown input: a voltage above the typical 1.4 V threshold (up to +Vin) turns the regulator off and reduces input supply current to about 80 µA, while a level below 1.4 V or an open pin keeps it on.
5 N.C. unconnected No connect pin, not internally connected.
6 GND power_in Circuit ground pin; the exposed pad of the SOP8-PP package must also be externally connected to GND.
7 N.C. unconnected No connect pin, not internally connected.
8 N.C. unconnected No connect pin, not internally connected.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer HTC Korea TAEJIN Tech
Package ESOP-8
Category Power Management (PMIC)
Pins 9

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Feedback Voltage (Vin=12V, ILOAD=0.5A, TJ=25℃) Vout 1.217 1.23 1.243 V Vin=12V, ILOAD=0.5A, TJ=25℃ 6
Feedback Voltage (TJ=25℃) Vout 1.193 1.23 1.267 V 8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, Vout=5.0V, TJ=25℃ 6
Feedback Voltage (TJ=-40 to +125℃) Vout 1.18 1.28 V 8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, Vout=5.0V, TJ=-40 to +125℃ 6
Feedback Bias Current (TJ=-40 to +125℃) Ib 200 nA Vout=5.0V, TJ=-40 to +125℃ 7
Feedback Bias Current (TJ=25℃) Ib 25 100 nA Vout=5.0V, TJ=25℃ 7
Oscillator Frequency (TJ=0 to +125℃) FOSC 47 58 kHz TJ=0 to +125℃ 7
Oscillator Frequency (TJ=-40 to +125℃) FOSC 42 63 kHz TJ=-40 to +125℃ 7
Oscillator Frequency (TJ=25℃) FOSC 52 kHz TJ=25℃ 7
Saturation Voltage (TJ=-40 to +125℃) VSAT 2 V Iout=3.0A, TJ=-40 to +125℃ 7
Saturation Voltage (TJ=25℃) VSAT 1.5 1.8 V Iout=3.0A, TJ=25℃ 7
Max Duty Cycle ("0") DC 94 98 % Note 5 7
Current Limit (Peak Current) (TJ=25℃) ICL 4.2 5.8 6.9 A TJ=25℃ 7
Current Limit (Peak Current) (TJ=-40 to +125℃) ICL 3.5 7.5 A TJ=-40 to +125℃ 7
Output Leakage Current (Output = 0V, TJ=25℃) IL 0.8 50 mA Output = 0V, TJ=25℃ 7
Output Leakage Current (Output = -1.0V, TJ=25℃) IL 6 30 mA Output = -1.0V, TJ=25℃ 7
Quiescent Current (TJ=25℃) IQ 5 9 mA TJ=25℃ 7
Quiescent Current (TJ=-40 to +125℃) IQ 11 mA TJ=-40 to +125℃ 7
Standby Quiescent Current (ON/OFF Pin = 5.0V ("off"), TJ=25℃) ISTBY 80 200 µA ON/OFF Pin = 5.0V ("off"), TJ=25℃ 7
Standby Quiescent Current (ON/OFF Pin = 5.0V ("off"), TJ=-40 to +125℃) ISTBY 400 µA ON/OFF Pin = 5.0V ("off"), TJ=-40 to +125℃ 7
ON/OFF Pin Logic Input Level VIH (Vout=0V, TJ=25℃) VIH 2.2 2.4 V Vout=0V, TJ=25℃ 7
ON/OFF Pin Logic Input Level VIH (Vout=0V, TJ=-40 to +125℃) VIH 1.4 V Vout=0V, TJ=-40 to +125℃ 7
ON/OFF Pin Logic Input Level VIL (Vout=Nominal, TJ=25℃) VIL 1.2 1 V Vout=Nominal Output Voltage, TJ=25℃ 7
ON/OFF Pin Logic Input Level VIL (Vout=Nominal, TJ=-40 to +125℃) VIL 0.8 V Vout=Nominal Output Voltage, TJ=-40 to +125℃ 7
ON/OFF Pin Input Current IIH (ON/OFF Pin = 5.0V, Regulator OFF, TJ=25℃) IIH 15 30 µA ON/OFF Pin = 5.0V (Regulator OFF), TJ=25℃ 7
ON/OFF Pin Input Current IIL (ON/OFF Pin = 0V, Regulator ON, TJ=25℃) IIL 0 0.5 µA ON/OFF Pin = 0V (Regulator ON), TJ=25℃ 7
Efficiency (Vout=5.0V) η 77 % Vin=12V, ILOAD=3.0A, Vout=5.0V 6
Maximum Supply Voltage Vin 45 V 5
On/Off Pin Input Voltage - -0.3 V -0.3V ≤ V ≤ +Vin 5
Output Voltage to Ground (Steady-State) - -1 V Steady-State 5
Storage Temperature Range TSTG -60 150 ℃ 5
Minimum ESD Rating (Human Body Model) - 2 kV Human Body Model: C=100 pF, R=1.5kΩ 5
Lead Temperature (Soldering, 10 seconds) - 260 ℃ Soldering, 10 seconds 5
Maximum Junction Temperature TJ 150 ℃ 5
Operating Junction Temperature Range TJ -40 125 ℃ 5
Supply Voltage Vin 40 V 5

CAD (KiCad official)

  • Symbol: LM2576DP-ADJ
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)
  • 3D model files: lm2576dp-adj-etched.step / lm2576dp-adj-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2576dp-adj.step / lm2576dp-adj.glb are the bare package body.

Provenance

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

  • Datasheet: HTC Korea TAEJIN Tech datasheet (11 pp, sha256 2acb3c8a94295de6, retrieved 2026-10-17, tier: lcsc)
  • 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