component
HK7533-1
Public Made by Adomby 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.
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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README
markdownHK7533-1
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hk7533-1.step/hk7533-1.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).