component

HK7533-1

Public Made by Adom

by adom

HK Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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HK7533-1

HK · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

HK7533-1 from HK, in a SOT-89-3. 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 pin, reference for all voltages; use a large ground copper area for noise immunity and heat dissipation.
2 VIN power_in Supply input accepting up to 24V (absolute maximum 32V), needing a ceramic bypass capacitor of at least 1uF.
3 VOUT power_out Regulated 3.3V output with ±2% accuracy, 100mA output current, 160mA overcurrent limit and 20mA short-circuit limit, needing an output capacitor of at least 1uF.

Key specifications

Parameter Value
Manufacturer HK
Package SOT-89-3
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
Maximum input supply voltage VIN 32 V 3
Maximum output current IOUT 160 mA 3
Power dissipation PD 500 mW SOT89-3 3
Operating temperature TOPR -10 85 ℃ 3
Storage temperature TSTG -40 125 ℃ 3
ESD human body model -3000 3000 V H.B.M POS/NEG; printed as ±3000 3
Output voltage accuracy VOUT -2 2 % VIN=VOUT+2V, IOUT=10mA 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
Minimum dropout voltage (50 mA) VDrop 300 360 420 mV IOUT=50mA, ΔVOUT=±2%*VOUT 3
Minimum dropout voltage (100 mA) VDrop 600 750 900 mV IOUT=100mA, ΔVOUT=±2%*VOUT 3
Input voltage VIN 24 V ISS=5uA 3
Quiescent current ISS 1.5 5 uA VIN=VOUT+2V 4
Temperature coefficient of output voltage ΔVOUT/(ΔTa*VOUT) -100 50 100 ppm/℃ VIN=VOUT+2V, IOUT=10mA, -40℃≤Ta≤85℃ 4
Output current IOUT 100 mA VIN=VOUT+2V 3
Power supply rejection ratio (100 Hz) PSRR 75 dB VIN=VOUT+2V, IOUT=10mA, f=100Hz 4
Power supply rejection ratio (1 kHz) PSRR 55 dB VIN=VOUT+2V, IOUT=10mA, f=1kHz 4
Power supply rejection ratio (10 kHz) PSRR 40 dB VIN=VOUT+2V, IOUT=10mA, f=10kHz 4
Short-circuit current ISCP 20 mA VOUT=GND 4
Overcurrent protection threshold IOCP 160 mA VIN=VOUT+2V 4
Thermal resistance junction-to-ambient θJA 200 °C/W SOT89-3 6
Maximum junction temperature (absolute limit) TJ(MAX) 150 °C 6
Maximum junction temperature (recommended) TJ 125 °C normal operation 6
Input capacitor (CIN) CIN 1 uF ceramic, close to LDO input 6
Output capacitor (COUT) COUT 1 uF ceramic, at least 6
Input capacitor and output capacitor layout range CIN=COUT 1 10 uF layout guideline 8
Recommended series input resistor 10 Ω LDO input, to absorb input spikes (approx.) 8

CAD (KiCad official)

  • Symbol: HK7533-1
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: hk7533-1-etched.step / hk7533-1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hk7533-1.step / hk7533-1.glb are the bare package body.

Provenance

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

  • Datasheet: HK datasheet (10 pp, sha256 e0b59e633b73e65b, retrieved 2026-11-05, 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