DW01 Li-ion protector (DW01A, SOT-23)
DW01A one-cell Li-ion protection IC (SOT-23-6) · drives two MOSFETs: OD (discharge) and OC (charge) · over-charge 4.30 V (release 4.10 V) · over-discharge 2.40 V (release 3.0 V) · over-current when CS > 150 mV, short circuit when CS > 1.35 V
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: Fortune DW01A (SOT-23-6)
Pins
- 1 OD
- 2 CS
- 3 OC
- 4 TD
- 5 VCC
- 6 GND
Ratings and limits
| Over-charge | 4.30 V (release 4.10 V), 80 ms delay |
|---|---|
| Over-discharge | 2.40 V (release 3.0 V), 40 ms delay |
| Over-current | CS > 150 mV for 10 ms |
| Short | CS > 1.35 V, about 5 µs |
How to use it
VCC through 100 Ω with 0.1 µF to GND (= cell −); OD and OC drive the two gates of an 8205A in the negative lead; CS through 1 kΩ to P−. That is the whole protection board on every 18650.