U2405B Datasheet, PDF (13/17 Pages) TEMIC Semiconductors – Fast Charge Controller for Drained NiCd/NiMH Batteries

U2405B
Parameters
Test Conditions / Pins
Symbol Min.
Typ.
Max. Unit
Charge break output
Pin 9
Output voltage
Output current
Battery detection
High, I₉ = 4 mA
Low, I₉ = 0 mA
V₉
8.4
V₉ = 1 V
I₉
10
Pin 10
V
100
mV
mA
Analog-digital converter
Input current
Conversion range
v v ^{Full scale level}
0.1 V V_Batt 4.5 V
V_Batt
0
3.85
– I_Batt
4.0
V
0.5
mA
Input voltage for reset
Input current for reset
Battery detection
y V_Batt 5 V
Maximum voltage
V_Batt
4.8
5.0
5.3
V
I_Batt
8
D V_Batt
80
35
mA
120
mV
Hysteresis
Maximum voltage
V_hys
15
mV
Mode select
Pin 12
Treshold voltage
Input current
Input current
Testmode
V₁₂
I₁₂
20
Normal mode Pin 12 open
0
4.7
V
mA
Sync. oscillator
Frequency
Threshold voltage
Input current
Pin 13
R = 150 kW
f_osc
800
Hz
C = 10 nF
High level
Low level
V_T(H)
V_T(L)
" 4.3 3%
" 2.2 3%
V
I₁₃
– 0.5
0.5
mA
Phase control
Ramp voltage
Ramp current
R_ö = 270 kW Pin 16
V₁₆
2.9
I₁₆
0
3.9
V
100
mA
Ramp voltage range
V₁₇
0
5
V
Ramp discharge current
I₁₇
3.3
8
mA
Synchronisation
Minimum current
Maximum current
v V_sync
80 mV
Pin 18
– I_sync
10
V_sync = 0 V
– I_sync
15
2
mA
30
mA
Zero voltage detection
V_sync
83
100
135
mV
Hysteresis
V_hys
15
mV
Charge stop criteria (function)
Pin 10
Positive gradient-turn-off f_osc = 800 Hz
d²V/dt²
4.8
mV/
threshold
min²
–DV-turn-off threshold
– DV
12
mV
TELEFUNKEN Semiconductors
Rev. A2, 14-Nov-96
13 (17)