FM2113

Part: FM2113 — SHEN ZHEN FINE MADE ELECTRONICS GROUPCO., LTD.

Type: One Cell Lithium-ion/Polymer Battery Protection IC

Description: High precision protection IC for rechargeable one-cell Li-ion or Li-polymer batteries, integrating over-charge, over-discharge, excess-current discharge, and battery short protection.

Operating Conditions:

• Supply voltage: 1.5–8 V (VDD-VSS)
• Operating temperature: -40 to +85 °C
• VDD-CS Operating input voltage: 1.5–20 V

Absolute Maximum Ratings:

• Max supply voltage: VSS-0.3 to VSS+10 V
• Max storage temperature: -40 to +125 °C
• Power dissipation: 250 mW

Key Specs:

• Operating Current: 3.0 μA typ (VDD=3.9V)
• Standby Current: 0.1 μA max (VDD=2.0V)
• Overcharge Detection Voltage (FM2113B): 4.375 V min, 4.400 V typ, 4.425 V max
• Overdischarge Detection Voltage: 2.720 V min, 2.800 V typ, 2.880 V max
• Overdischarge Current Detection Voltage: 120 mV min, 150 mV typ, 180 mV max (VDD=3.6V)
• Short protection voltage: 0.7 V min, 1.0 V typ, 1.3 V max (VDD=3.0V)
• Overcharge Voltage Detection Delay Time: 70 ms min, 100 ms typ, 150 ms max (VDD=3.9V → 4.5V)
• Short protection delay time: 200 μs min, 300 μs typ, 400 μs max (VDD=3.0V, CS=0.3V)

Features:

• High precision protection voltage threshold (over-charge/over-discharge)
• Delay Times are generated inside
• Self recovery function of over discharge
• High voltage withstand design for CS terminal and OC terminal (absolute maximum rating is 20V)
• Allow variable 0V battery charge
• Wide operating temperature range

Applications:

• Rechargeable one-cell Li-ion battery pack
• Rechargeable one-cell Li-polymer battery pack

Package:

• SOT23-6

• High precision protection voltage threshold (over-charge/over-discharge)
• Delay Times are generated inside
• Self recovery function of over discharge
• Operation Current Consumption : 3.0μA typ 3.0μA typ ( VDD=3.9V )
• High voltage withstand design is adopted for the terminal connecting the charger (CS terminal and OC terminal, absolute maximum rating is 20V)
• Allow variable 0V battery charge
• Wide operating temperature range : -40 °C ~+85 °C
• Small SOT23-6 Package

• rechargeable one-cell Li-ion battery pack
• rechargeable one-cell Li-polymer battery pack

FM2113 SOT-23-6 Pinout

Notes

• FM2113 variant: This pinout is for the base FM2113 part. Variants FM2113A, FM2113B, FM2113C, and FM2113D share the same pinout but differ in overcharge detection voltage thresholds (VCU).
• High voltage withstand: CS and OC terminals have an absolute maximum rating of 20V (charger connection terminals).
• Decoupling required: A 0.1μF ceramic capacitor must be connected between VDD and VSS for stable operation.
• Operating voltage range: VDD–VSS must be 1.5–8V under normal operation; VDD–CS can reach up to 20V when charger is connected.

Electrical parameters ( VSS=0V , TA=25 °C, unless otherwise specified, )

3

SHEN ZHEN FINE MADE ELECTRONICS GROUPCO., LTD.

FM2113 ( file No.

: S&CIC1162)

( VSS=0V , TA=25 °C, unless otherwise specified )

One Cell Lithium-ion/Polymer Battery Protection IC

( VSS=0V , TA=25 °C, unless otherwise specified )

Titl e

Size

Number

Revision

D

C

B

A

FM2113 ( file No. :

S&CIC1162)

One Cell Lithium-ion/Polymer Battery Protection IC

• remarks : * 1 、 If the resistance of R1 is too large, the voltage drop will be produced on R1 due to the current consumption, which will affect the detection voltage accuracy. When the charger is reversely connected, the current flows from the charger to the IC. If R1 is too large, the voltage between vdd-vss terminals may exceed the absolute maximum rated value. *2 、 R2 is connected with too large resistance, which may lead to the situation that the charging current cannot be cut off when the high voltage charger is connected. However, in order to control the current when the charger is reverse connected, please select a larger resistance value as far as possible.
• *3 、 C1 can stabilize VDD voltage,Do not connect capacitors below 0.01 μ F.
• *4 、 When the threshold voltage of MOSFET is above the over discharge detection voltage, the discharge may be stopped before the over discharge protection.
• *5 、 When the withstand voltage between gate and source is below the charger voltage, n-MOSFET may be damaged.