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AN2390 Datasheet(PDF) 15 Page - STMicroelectronics

Part # AN2390
Description  A flexible universal battery charger
PDF  42 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2390 Datasheet(HTML) 15 Page - STMicroelectronics

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AN2390
Evaluation board implementation
15/42
Figure 9.
NiMH battery recognition circuit
Here the combination of two transistors works as a switch which is controlled by the E_Front
signal coming from the ST7 MCU. The algorithm for NiMH battery recognition is as follows.
To charger
BT2
Ni-MH BATTERY
V-
V+
Q5
VIN
R26
470
R27
470
R7
1k
Q6
E_FRONT
2STR1215
2STR1215
31
2



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