component

HK7533D

Public Made by Adom

by adom

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

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HK7533D

HK · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3L

HK7533D from HK, in a SOT-23-3L. 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 GND power_in Ground reference for the regulator; all voltages are specified relative to GND, and a large ground copper area is recommended for noise immunity and heat dissipation.
2 VOUT power_out Fixed 3.3V regulated output (±2%) delivering 100mA typical with 160mA overcurrent limit and 20mA short-circuit current; requires an output capacitor of at least 1uF ceramic.
3 VIN power_in Supply input accepting up to 24V (absolute maximum 32V); requires an input bypass capacitor of at least 1uF ceramic placed close to the pin.

Key specifications

Parameter Value
Manufacturer HK
Package SOT-23-3L
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
Input voltage VIN 24 V ISS=5uA, TJ=25°C 3
Output voltage VOUT 3.3 V VIN=VOUT+2V, IOUT=10mA; limits printed VOUT0.98 to VOUT1.02 3
Line regulation ΔVOUT -30 30 mV VOUT+2V≤VIN≤24V, IOUT=5mA 3
Load regulation ΔVOUT -50 50 mV VIN=VOUT+2V, 1mA≤IOUT≤100mA 3
Dropout voltage VDrop 300 360 420 mV IOUT=50mA, ΔVOUT=±2%*VOUT 3
Dropout voltage VDrop 600 750 900 mV IOUT=100mA, ΔVOUT=±2%*VOUT 3
Quiescent current ISS 1.5 5 uA VIN=VOUT+2V 4
Output temperature coefficient ΔVOUT/(ΔTa*VOUT) 50 100 ppm/℃ VIN=VOUT+2V, IOUT=10mA, -40℃≤Ta≤85℃; printed ±50 typ, ±100 max 4
Output current IOUT 100 mA VIN=VOUT+2V 3
Short-circuit current ISCP 20 mA VOUT=GND 4
Overcurrent protection IOCP 160 mA VIN=VOUT+2V 4
PSRR 100Hz PSRR 75 dB VIN=VOUT+2V, IOUT=10mA, f=100Hz 4
PSRR 1kHz PSRR 55 dB VIN=VOUT+2V, IOUT=10mA, f=1kHz 4
PSRR 10kHz PSRR 40 dB VIN=VOUT+2V, IOUT=10mA, f=10kHz 4
Maximum input supply voltage VIN 32 V 3
Maximum output current IOUT 160 mA 3
Power dissipation SOT23-3L PD 250 mW SOT23-3L 3
Operating temperature TOPR -10 85 ℃ 3
Storage temperature TSTG -40 125 ℃ 3
ESD HBM -3000 3000 V H.B.M POS/NEG 3
Thermal resistance junction-ambient SOT23-3L θJA 500 °C/W SOT23-3L 6
Maximum junction temperature TJ(MAX) 150 °C recommended not above 125°C in normal operation 6

CAD (KiCad official)

  • Symbol: HK7533D
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: hk7533d-etched.step / hk7533d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hk7533d.step / hk7533d.glb are the bare package body.

Provenance

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

  • Datasheet: HK datasheet (10 pp, sha256 c78b84eb208ac49d, retrieved 2026-10-23, 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), 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