LTC4060_15 Datasheet, PDF (5/20 Pages) Linear Technology – Standalone Linear NiMH/NiCd Fast Battery Charger

TYPICAL PERFOR A CE CHARACTERISTICS
NiMH Battery Charging
Characteristics at 1C Rate
1.70
T_A = 25°C
–∆V TERMINATION
1.65
NiCd Battery Charging
Characteristics at 1C Rate
1.7
T_A = 25°C
–∆V TERMINATION
1.6
1.60
1.5
1.55
0
10 20 30 40 50 60
CHARGE TIME (MINUTES)
4060 G01
NiCd Battery Charging
Characteristics at C/2 Rate
1.65
1.4
0
10 20 30 40 50 60
CHARGE TIME (MINUTES)
4060 G02
I_FCH vs Temperature and
Supply Voltage
2.010
1.60
–∆V TERMINATION
1.55
1.50
1.45
2.005
2.000
1.995
V_CC = 10V
V_CC = 4.5V
1.40
0
20 40 60 80 100 120 140
CHARGE TIME (MINUTES)
4060 G04
I_BRD vs Temperature and
Supply Voltage
–260
V_CC = 10V
–300
V_CC = 4.5V
–340
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4060 G07
1.990
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4060 G05
V_MDV vs Temperature and
Supply Voltage
18
16
NiCd
14
4.5V ≤ V_CC ≤ 10V
12
10
NiMH
4.5V ≤ V_CC ≤ 10V
8
6
4
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4060 G08
LTC4060
NiMH Battery Charging
Characteristics at C/2 Rate
1.60
T_A = 25°C
–∆V TERMINATION
1.55
1.50
1.45
1.40
1.35
0
20 40 60 80 100 120 140
CHARGE TIME (MINUTES)
4060 G03
I_FCL vs Temperature and
Supply Voltage
402
401
V_CC = 10V
400
V_CC = 4.5V
399
398
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4060 G06
t_ACC vs Temperature and
Supply Voltage
1.7
1.5
V_CC = 10V
1.0
0.5
V_CC = 4.5V
0
–0.5
–1.0
–1.5
–50
R_PROG = 3480Ω
C_TIMER = 470pF
R_PROG = 698Ω
C_TIMER = 1.2nF
–25 0 25 50 75
TEMPERATURE (°C)
100 125
4060 G09
4060f
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