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FM8254
FM8254 is a 3/4 series lithium-ion rechargeable battery protection IC with built-in high-precision voltage detection circuit and delay circuit.
FM8254 is available in TSOP-16 package
FM8254 is available in TSOP-16 package
FM8254 Description
FM8254 is a 3/4 series lithium-ion rechargeable battery protection IC with built-in high-precision voltage detection circuit and delay circuit.
FM8254 is available in TSOP-16 package
FM8254 is a 3/4 series lithium-ion rechargeable battery protection IC with built-in high-precision voltage detection circuit and delay circuit.
FM8254 is available in TSOP-16 package
FM8254 Features:
High-precision voltage detection for each battery
Overcharge detection voltage n (n=1~4) 3.9~4.35V accuracy ± 25mV
Overcharge release voltage n (n=1~4) 3.8~4.15V accuracy ±80 mV
Overdischarge detection voltage n (n=1~4) 2.3~2.7V accuracy ±80 mV
Overdischarge discharge voltage n (n=1~4) 2.7~3.0V accuracy ±100 mV
Overcharge release voltage n (n=1~4) 3.8~4.15V accuracy ±80 mV
Overdischarge detection voltage n (n=1~4) 2.3~2.7V accuracy ±80 mV
Overdischarge discharge voltage n (n=1~4) 2.7~3.0V accuracy ±100 mV
3 section overcurrent detection function
Overcurrent detection voltage 0.20V accuracy ± 25mV
Overcurrent detection voltage 2 0.50V accuracy ± 100mV
Overcurrent detection voltage 3 VC 1 −1.1V accuracy ±300 mV
Overcurrent detection voltage 2 0.50V accuracy ± 100mV
Overcurrent detection voltage 3 VC 1 −1.1V accuracy ±300 mV
The delay time for detecting overcharge, overdischarge, and overcurrent 1 can be set based on the capacity of the external component. The delay time for detecting overcurrent 2 and 3 is fixed internally
Charge and discharge can be controlled through the control terminal
High voltage element: absolute maximum rating 26V
Wide operating voltage range: 3V~ 24V
Wide operating temperature range: −40 to +85°C
Low consumption current
Charge and discharge can be controlled through the control terminal
High voltage element: absolute maximum rating 26V
Wide operating voltage range: 3V~ 24V
Wide operating temperature range: −40 to +85°C
Low consumption current
40 μA Max at work (+25°C)
0.1 μA Max at sleep (+25°C)
0.1 μA Max at sleep (+25°C)
FM8254 is available in TSOP-16 package
FM8254 application
3/4 series lithium-ion rechargeable battery
FM8254 Pin Definition and description:
FM8254 Product parameters
Model number
| Overcharge detection voltage VCU(V) | Overcharge release voltage VCL(V) | Overdischarge detection voltage VDL(V) | Overdischarge release voltage VDU(V) | Overcurrent detection voltage 1 VIOV1(V) | Charging function to 0V battery |
FM8254AAV | 4.250±0.025 | 4.150 ± 0.080 | 2.700±0.080 | 3.00±0.100 | 0.20±0.025 | probably |
FM8254AAF | 4.250±0.025 | 4.150±0.080 | 2.40±0.080 | 3.00±0.100 | 0.20±0.025 | probably |
FM8254AAN | 4.250±0.025 | 4.150±0.080 | 2.50±0.080 | 3.00±0.100 | 0.10±0.025V | probably |
FM8254AAQ | 3.900±0.025 | 3.800±0.050 | 2.30±0.080 | 2.70±0.100 | 0.30±0.025 | probably |
FM8254 Function block diagram:
FM8254 Measurement circuit:
Typical application circuit diagram of FM8254 three-section series
Typical application circuit diagram of FM8254 four-section series
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