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U2405B

TEMIC Semiconductors
Part Number U2405B
Manufacturer TEMIC Semiconductors
Description Fast Charge Controller for Drained NiCd/NiMH Batteries
Published Apr 16, 2005
Detailed Description U2405B Fast Charge Controller for Drained NiCd/NiMH Batteries Description The fast-charge battery controller circuit, U2...
Datasheet PDF File U2405B PDF File

U2405B
U2405B


Overview
U2405B Fast Charge Controller for Drained NiCd/NiMH Batteries Description The fast-charge battery controller circuit, U2405B, uses bipolar technology.
The IC enables the designer to create an efficient and economic charge system.
The U2405B incorporates intelligent multiple-gradient batteryvoltage monitoring and mains phase control for power management.
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 longtime storage.
It has two LED driver indications for charge and temperature status.
Features D D D D D D D D Preformation algorithm for drained batteries Multiple gradient monitoring Temperature window (Tmin/Tmax) Exact battery voltage measurement without charge Phase control for charge-current regulation Top-off and trickle charge function Two LED outputs for charge status indication Disabling of d2V/dt2 switch-off criteria during battery formation Applications D Portable power tools D Laptop/notebook personal computer D Cellular/cordless phones D Emergency lighting systems D Hobby equipment D Camcorder D Battery-voltage check 18 (20) 17 (19) 16 (18) 14 (15) Package: DIP18, SO20 13 (14) 12 (13) 11 (12) Sync ö C ö R VRef 6.
5 V/10 mA Oscillator Status control 3 (3) Phase control Vöi 4 (4) Scan path 1 (1) Trigger output Control unit Gradient d2V/dt2 and –dV Battery detection VRef = 5 V 10 (11) VBatt Monitor 0.
1 to 4 V Power - on control 15 (17) 2 (2) Power supply VS = 8 to 26 V 160 mV Ref Temp.
control Sensor Tmax Charge break output 94 8585 5 (5) 6 (6) 7 (8) 8 (9) 9 (10) ( ) SO 20, Pins 7 and 16 NC Figure 1.
Block diagram TELEFUNKEN Semiconductors Rev.
A2, 14-Nov-96 1 (17) U2405B Pin Description Package: DIP18 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol Output...


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