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U2407B

TEMIC Semiconductors
Part Number U2407B
Manufacturer TEMIC Semiconductors
Description Simple Controller for Fast Charge Systems
Published Apr 16, 2005
Detailed Description U2407B Simple Controller for Fast Charge Systems Description The bipolar IC U2407B is a fast charge battery controller f...
Datasheet PDF File U2407B PDF File

U2407B
U2407B

Overview
U2407B Simple Controller for Fast Charge Systems Description The bipolar IC U2407B is a fast charge battery controller for drained NiCd/ NiMH batteries.
Apart from phase control, it is identical with U2405B, but has four LED outputs.
The IC enables the designer to create an efficient and economic charge system.
The U2407B incorporates an intelligent multiple-gradient battery-voltage monitoring combined with temperature and failure mode detection.
With automatic top-off charging, the integrated circuit ensures that the charge device stops regular charging before the critical stage of overcharging is achieved.
It incorporates an additional algorithm for reactivating fully drained batteries especially after long time storage.
It has four LED driver outputs for different indications of the charge status.
Features D D D D D D D D Multiple gradient monitoring Temperature window (Tmin/Tmax) Exact currentless measurement Four LED status outputs Linear power control Preferred for externally regulated current sources Preformation algorithm for drained batteries Programmable top-off charge function Applications D Primary switch mode D AC/ DC wall plug adapter D Ultra fast charger (10 minutes) Package: DIP16/ SO16 13 12 15 2 3 10 VRef 6.
5 V/10 mA Oscillator Status control Scan path 11 16 Switch output Control unit Gradient d2V/dt2 and –dV Battery detection VRef = 5 V 9 VBatt monitor 0.
1 to 4 V Power - on control 14 1 Power supply VS = 8 to 26 V 160 mV Ref Tmax Temp.
control Sensor Charge break output 95 10648 4 5 6 7 8 Figure 1.
Block diagram TELEFUNKEN Semiconductors Rev.
A4, 05-Mar-97 1 (16) U2407B 10 W Input Voltage 8 V to 24 V C10 10 mF R7 1 kW R1 R4 2.
2 kW R5 2.
2 kW LED1 LED2 BD649 Mounted on heatsink D1 BYW52 T1 T2 RB1 1 kW RB2 10 kW RB3 10 kW Battery LED3 LED4 BC237 R8 100 kW CR 1 mF VBatt C7 1 mF 7 Sensor 9 6 16 12 R6 Rsh 0.
2 W 10 kW C4 1 mF OPI 5 8 tp 11 STM Tmax Output Osc CO 10 nF RT2 100 kW RT3 1.
5 kW RO 270 kW OPO VS 10 2 3 15 4 C2 0.
...


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