TMSOP-8 (FM008-A)
SNT-8A (PH008-A)Overcharge detection voltage accuracy：±15mV (S-82H5B)｜±20mV (S-82F5B)
This IC includes high-accuracy voltage detection circuits and delay circuits, and can monitor the status of 3-serial to 5-serial cell lithium-ion rechargeable batteries through small 8-pin packages.
Short-circuiting between cells makes it possible for serial connection of 3-cell to 5-cell.
Features
- High-accuracy voltage detection circuit for each cell
- Overcharge detection voltage n
3.500 V to 4.700 V (5 mV step)
: Accuracy ±20 mV (Ta = +25°C)
: Accuracy ±25 mV (Ta = −10°C to +60°C) - Overcharge release voltage n*1
3.100 V to 4.700 V
: Accuracy ±50 mV - Overdischarge detection voltage n
1.500 V to 3.200 V (50 mV step)
: Accuracy ±80 mV - Overdischarge release voltage n*2
1.500 V to 3.900 V (100 mV step)
: Accuracy ±100 mV - Delay times are generated only by an internal circuit (external capacitors are unnecessary)
- Overcharge detection delay time : 0.5 s, 1 s, 2 s, 4 s, 6 s, 8 s
- Overdischarge detection delay time : 128 ms, 256 ms, 0.5 s, 1 s
- CO and DO pin output voltage is limited to 7.5 V max. respectively
- CO pin, DO pin output form
- CMOS output, Nch open-drain output
- CO pin, DO pin output logic:
- Active "H", active "L"
- High-withstand voltage
- Absolute maximum rating 28 V
- Wide operation voltage range
- 3.6 V to 24 V
- Wide operation temperature range
- Ta = -40°C to +85°C
- Low current consumption
- During operation (3.4 V for each cell) : 7.0 µA max.
- Lead-free (Sn 100%), halogen-free
*1. Overcharge release voltage = Overcharge detection voltage - Overcharge hysteresis voltage
(Overcharge hysteresis voltage can be selected from a range of 0 mV to 400 mV in 50 mV step.)
*2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage
(Overdischarge hysteresis voltage can be selected from a range of 0 mV to 700 mV in 100 mV step.)
Remark n = 1, 2, 3, 4, 5
Applications
- Lithium-ion rechargeable battery pack