component
DS6521AFF8
Public Made by Adomby adom
DSTECH Battery Management, SOP-8-EP. 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
markdownDS6521AFF8
DSTECH · Battery Management · SOP-8-EP
DS6521AFF8 from DSTECH, in a SOP-8-EP. 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 | TS | input | Connects to the battery pack NTC thermistor (10 kΩ or 100 kΩ at 25 °C) for temperature sensing; tie TS directly to GND if temperature detection is not needed. |
| 2 | ISET | input | Programs the fast-charge current: an external resistor from ISET to GND sets ICHG = VISET / RISET × 1000 with VISET = 1 V, and the programmable range is 50 mA to 1 A. |
| 3 | VIN | power_in | Input supply pin, recommended operating range 4.5 V to 24 V, with 6 V input overvoltage protection and a 28 V input rating. |
| 4 | VCC | power_out | Internal regulator output; a 0.1 µF to 1 µF capacitor to ground is recommended. |
| 5 | BAT | power_out | Connects to the battery, which may also connect the system load; a bypass capacitor of 10 µF to 22 µF is recommended. |
| 6 | CHG | output | Charge status output: low (FET on) indicates charging, and open (FET off) indicates no charging or charge complete. |
| 7 | EN | input | Chip enable with 1.5 V rising and 0.4 V falling thresholds; at EN = 0 V the standby current IQS is 80 µA maximum at VIN = 5 V. |
| 8 | GND | power_in | Ground reference for the device. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DSTECH |
| Package | SOP-8-EP |
| Category | Power Management (PMIC) |
| Pins | 9 |
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 | 4.5 | 24 | V | 5 | ||
| Battery output voltage, Type A (4.2V) | VBAT | 4.16 | 4.2 | 4.24 | V | ICHG = 25mA | 5 |
| Fast charge current tolerance, ICHG > 100mA | -10 | 10 | % | ICHG > 100mA | 5 | ||
| Fast charge current tolerance, ICHG < 100mA | -10 | 10 | mA | ICHG < 100mA | 5 | ||
| Input voltage (recommended operating) | VIN | 4.5 | 24 | V | 4 | ||
| Application junction temperature range | -40 | 125 | oC | 4 | |||
| Application ambient temperature range | -40 | 85 | oC | 4 | |||
| VIN / EN / CHG / TEM to GND | -0.3 | 28 | V | 4 | |||
| BAT to GND | -0.3 | 15 | V | 4 | |||
| Other to GND | -0.3 | 6 | V | 4 | |||
| Junction temperature | 150 | oC | 4 | ||||
| Storage temperature range | -60 | 150 | oC | 4 | |||
| Lead soldering temperature | 260 | oC | 10 sec. | 4 | |||
| ESD HBM | 2 | KV | 4 | ||||
| ESD MM | 200 | V | 4 | ||||
| Thermal resistance junction-to-ambient, ESOP-8 | θJA | 75 | oC /W | TA = 25°C, DSTECH EVB board (Note 2) | 4 |
CAD (KiCad official)
- Symbol:
DS6521AFF8 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm - 3D model: SOP-8-EP (KiCad packages3D, STEP)
- 3D model files:
ds6521aff8-etched.step/ds6521aff8-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ds6521aff8.step/ds6521aff8.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: DSTECH datasheet (15 pp, sha256
e4ba68fabe077547, retrieved 2026-10-18, 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).