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H8118A28PR

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Shanghai Siproin Microelectronics DC-DC Converters, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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H8118A28PR

Shanghai Siproin Microelectronics · DC-DC Converters · SOT-89-3

H8118A28PR from Shanghai Siproin Microelectronics, 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.
2 VOUT power_out Output voltage pin; absolute maximum voltage is VSS-0.3 to VSS+8 V.
3 LX passive External inductor connection pin; absolute maximum voltage is VSS-0.3 to VSS+8 V and maximum current is 1000 mA.

Key specifications

Parameter Value
Manufacturer Shanghai Siproin Microelectronics
Package SOT-89-3
Category Power Management ICs
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 7.5 V 3
Operation Start Voltage VST1 0.9 V IOUT=1mA, VOUT=2.2V~4.2V 3
Input Current At No Load ISS 15 25 uA VIN=1.8V, VOUT=3.0V 3
Input Current At No Load ISS 25 35 uA VIN=0.9V, VOUT=3.0V 3
Current Consumption 2 ISS2 6 10 uA VOUT=VOUT(s)+0.5V 3
Current Consumption During Shutdown ISSS 1 uA VEN=0V 3
Duty Ratio1 Duty1 70 78 85 % VOUT=0.95xVOUT(s) 3
Shutdown Pin Input Voltage (high) VSH 0.75 V VOUT=0.95xVOUT(s), judge oscillation at LX pin 3
Shutdown Pin Input Voltage (low) VSL1 0.3 V VOUT=0.95xVOUT(s), judge stop at LX pin 3
Shutdown Pin Input Current (high) ISH -0.1 0.1 uA VEN=6V 3
Shutdown Pin Input Current (low) ISL -0.1 0.1 uA VEN=0V 3
VOUT Pin Voltage VOUT -0.3 8 V Printed as VSS-0.3 to VSS+8; Ta=25℃ 2
EN Pin Voltage EN -0.3 8 V Printed as VSS-0.3 to VSS+8; Ta=25℃ 2
LX Pin Voltage VLX -0.3 8 V Printed as VSS-0.3 to VSS+8; Ta=25℃ 2
LX Pin Current ILX 1000 mA Ta=25℃ 2
Power Dissipation SOT-89-3 PD 500 mW Ta=25℃ 2
Operating Temperature TOPR -40 85 ℃ 2
Storage Temperature TSTG -40 125 ℃ 2
Soldering Temperature & Time TSOLDER 260 ℃ 10s 2
Maximum Oscillation Frequency fosc 300 KHz VOUT=0.95xVOUT(s), measure Waveform at LX pin 3
Efficiency EFF1 90 % 3

CAD (KiCad official)

  • Symbol: H8118A28PR
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: h8118a28pr-etched.step / h8118a28pr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); h8118a28pr.step / h8118a28pr.glb are the bare package body.

Provenance

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

  • Datasheet: Shanghai Siproin Microelectronics datasheet (6 pp, sha256 b86cbaa950a423ac, retrieved 2026-10-27, tier: lcsc)
  • 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