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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.
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
markdownH8118A28PR
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);h8118a28pr.step/h8118a28pr.glbare 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).