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Hi9002
Public Made by Adomby adom
Hichips(智芯) DC-DC Converters, SOT-23-6. 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
markdownHi9002
Hichips(智芯) · DC-DC Converters · SOT-23-6
Hi9002 from Hichips(智芯), in a SOT-23-6. 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 | BST | passive | Bootstrap capacitor pin for the high-side driver, with BST to SW rated at -0.3 to 6 V absolute maximum. |
| 2 | GND | power_in | Chip ground reference for the device. |
| 3 | FB | input | Output voltage feedback sense input, where the internal reference is 0.797 V (VFB 781 to 813 mV over -40 to +125 °C) and external resistors set VOUT from 0.8 V. |
| 4 | EN | input | Enable input, active high, with rising threshold 1.5 to 1.6 V and falling threshold 1.1 to 1.3 V, an internal 1.7 MΩ pulldown to GND, and an absolute maximum of 50 V. |
| 5 | VIN | power_in | Supply input with an operating range of 4.5 to 48 V and an absolute maximum of -0.3 to 50 V. |
| 6 | SW | output | Midpoint of the internal high-side and low-side MOSFET half-bridge, rated at -0.7 V (-5 V for 10 ns) to VIN+0.7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Hichips(智芯) |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VIN pin operating voltage range | VIN | -0.3 | 50 | V | 2 | ||
| SW pin operating voltage range | SW | -0.7 | V | Printed max is VIN+0.7 V (not numeric); -5 V allowed for 10 ns | 2 | ||
| EN pin operating voltage range | EN | 50 | V | 2 | |||
| BST to SW voltage | BST | -0.3 | 6 | V | BST to SW | 2 | |
| All other pins voltage | -0.3 | 6 | V | All other pins | 2 | ||
| Storage temperature | TSTG | -55 | 150 | ℃ | 2 | ||
| Junction temperature | TJ | -40 | 150 | ℃ | 2 | ||
| ESD HBM (human body model) | ESD | 2 | KV | HBM 人体放电模式 | 2 | ||
| Input voltage range (Features list, not a recommended-operating table) | VIN | 4.5 | 48 | V | 宽输入电压范围 (wide input voltage range) | 1 | |
| VIN UVLO rising threshold | VINUVR | 4.15 | 4.3 | 4.45 | V | 3 | |
| VIN UVLO falling threshold | VINUVF | 3.85 | 4.05 | 4.25 | V | 3 | |
| Feedback voltage | VFB | 781 | 797 | 813 | mV | TJ = -40°C to +125°C | 3 |
| Feedback voltage | VFB | 785 | 797 | 809 | mV | TJ = +25°C | 3 |
| Enable rising threshold | VEN_R | 1.5 | 1.55 | 1.6 | V | 低到高 | 3 |
| Enable falling threshold | VEN_F | 1.1 | 1.22 | 1.3 | V | 高到低 | 3 |
| Low-side switch current limit | ILIM_LS | 0.9 | 1.1 | 1.3 | A | 3 | |
| Minimum on-time | TON_MIN | 100 | nS | 3 | |||
| Maximum on-time | TON_MAX | 0.5 | uS | 3 | |||
| Minimum off-time | TOFF_MIN | 92 | nS | 3 | |||
| High-side switch maximum current | ILIM_HS | 2 | A | 3 | |||
| High-side switch leakage current | LKGHS | 1 | uA | VEN = 0V, VSW = 0V | 3 | ||
| Low-side switch leakage current | LKGLS | 1 | uA | VEN = 0V, VSW = 45V | 3 | ||
| Feedback current | ILK-FB | 0.1 | uA | VEN = 1V, VFB = 2V | 3 | ||
| High-side switch on-resistance | RON-HS | 420 | 840 | mΩ | VBST - VSW = 5V | 3 | |
| Low-side switch on-resistance | RON-LS | 220 | 440 | mΩ | VIN = 15V | 3 | |
| Shutdown current | IS | 1 | 2 | uA | VEN < 0.3V VIN=15V | 3 | |
| Quiescent current | IQ | 150 | 220 | uA | 空载，VFB=0.83V | 3 | |
| Soft-start time | TSS | 0.35 | 0.6 | 0.85 | mS | VFB from 10% to 90% | 3 |
| VIN UVLO hysteresis | VINUV_hys | 0.3 | V | 3 | |||
| Enable hysteresis threshold | VEN_Hys | 0.3 | V | 3 | |||
| Switching frequency | FSW | 650 | KHz | 3 | |||
| Over-temperature protection threshold (output off) | TOTP_R | 151 | ℃ | 输出关闭 | 3 | ||
| Over-temperature hysteresis | TOTP_Hys | 21 | ℃ | 3 | |||
| Junction-to-ambient thermal resistance | RθJA | 200 | ℃/W | PN结到环境 (PN junction to ambient) | 2 |
CAD (KiCad official)
- Symbol:
Hi9002 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
hi9002-etched.step/hi9002-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hi9002.step/hi9002.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Hichips(智芯) datasheet (13 pp, sha256
802e0eeb60ca2dc5, retrieved 2026-10-17, 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-haiku-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).