Charging of Batteries
U2400B
Charging of Batteries with Automatic Pre-Discharge
Description
The monolithic integrated circuit, U2400B, is a b...
Description
U2400B
Charging of Batteries with Automatic Pre-Discharge
Description
The monolithic integrated circuit, U2400B, is a bipolar circuit, designed for automatic recharging of NiCd/ NiMH batteries. It has controlled and defined charging
characteristics for various charging sequences with
*subsequent trickle charge operation. The long life *Memory Effect of the recharging cell remains intact.
Features
D Three time selections:
0.5 h, 1 h or 12 h with subsequent trickle charge operation
D Battery temperature and contact monitoring
D Charging interrupt for overvoltage or excessive
temperature
D Automatic pre-discharge possible
D Separate charge- and discharge outputs
D Pulse-width modulation facility of charge- and
discharge current for matching to transformer or battery data
D Timer clock via mains or internal oscillator
D Reference voltage source
D LED-status output for mode indication
Case: DIP16, SO16L
8 14
16 0.5 Hz
94 9375
11 Mains supply 7
Reference
Open Ref on off
Test logic
Mains synchronization
1
3 200 Hz Oscillator
– 2+
Control unit
PWM Time
Status Discharge Reset
13
Ref 12 h GND 1 h
Charge time
selection Open 0.5 h
Failure – charge mode
II Continue Alternating 15 Ref charging red / green
I Stop
Red
Open charging indicator
Status display output
9
Charge Start
Stop
Charge output 12
Discharge stop
0.53 V + –6
0.53 V +
– Sensor monitoring
5
+ – 2.95 V
Event counter
Vmax
0.53 V
–
+4
Battery contact monitoring
– + 0.18 V
10
Discharge out...
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