component
FH2120-OB
Public Made by Adomby adom
XIN FEI HONG Battery Management ICs, SOT-23-6. Datasheet-verified pinout, 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
markdownFH2120-OB
XIN FEI HONG · Battery Management ICs · SOT-23-6
FH2120-OB from XIN FEI HONG, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | DO | output | Discharge control MOSFET gate connection terminal; outputs high or low to control discharge FET based on battery voltage and discharge overcurrent protection, with output voltage range VSS-0.3V to VDD+0.3V. |
| 2 | CO | output | Charge control MOSFET gate connection terminal; outputs high or low to control charge FET based on battery voltage and charge overcurrent protection, with output voltage range VSS-0.3V to VDD+0.3V. |
| 3 | VM | input | Overcurrent detection and charger detection input terminal; monitors voltage drop across sense resistor for discharge overcurrent (0.050V-0.300V), short circuit (0.5V or 1.0V), and charge overcurrent (-0.080V to -0.220V) protection. |
| 4 | VC | input | Battery 1 negative to Battery 2 positive connection terminal; voltage divider point for measuring individual cell voltages with input voltage range -0.3V to +8.0V relative to VSS. |
| 5 | VDD | power_in | Positive power supply input and Battery 1 positive voltage connection terminal; supplies operating power to IC with voltage range -0.3V to +8.0V relative to VC and typical operating current of 5.0µA at 25°C. |
| 6 | VSS | power_in | Ground, negative power supply input, and Battery 2 negative voltage connection terminal; provides reference for IC operation with voltage range -0.3V to +8.0V relative to VC and typical standby current of 0.1µA at 25°C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | XIN FEI HONG |
| Package | SOT-23-6 |
| Category | Power Supply Chip |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
FH2120-OB - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
fh2120-ob-etched.step/fh2120-ob-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fh2120-ob.step/fh2120-ob.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: XIN FEI HONG datasheet (9 pp, sha256
90ce8097b75815d8, retrieved 2026-09-22, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).