LTC4061 Datasheet, PDF (4/20 Pages) Linear Technology – Standalone Linear Li-lon Battery Charger with Thermistor Input

LTC4061
TYPICAL PERFOR A CE CHARACTERISTICS
Battery Regulated Output (Float)
Voltage vs Charge Current
4.26
V_CC = 5V
4.24
R_PROG = 1k
4.22
4.20
4.18
4.16
4.14
4.12
4.10
0
200 400 600 800
CHARGE CURRENT (mA)
1000
4061 G01
Charge Current vs PROG Pin
Voltage
1200
1000
V_CC = 5V
R_PROG = 1k
C/5 = 5V
V_TIMER = 5V
800
600
400
200
0
0 0.2 0.4 0.6 0.8 1.0 1.2
V_PROG (V)
4061 G04
Trickle Charge Current vs
Temperature
84
V_CC = 5V
V_BAT = 2.5V
R_PROG = 1.25k
82
80
78
76
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4061 G07
4
Battery Regulated Output (Float)
Voltage vs Temperature
4.215
4.210
V_CC = 5V
R_PROG = 10k
4.205
4.200
4.195
4.190
4.185
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4061 G02
PROG Pin Voltage vs Temperature
(Constant-Current Mode)
1.006
1.004
R_PROG = 10k
C/5 = V_CC
1.002
1.000
0.998
V_CC = 8V
V_CC = 4.3V
0.996
0.994
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4061 G05
Trickle Charge Threshold Voltage
vs Temperature
2.96
V_CC = 5V
R_PROG = 1.25k
2.94
2.92
2.90
2.88
2.86
2.84
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4061 G08
Battery Regulated Output (Float)
Voltage vs Supply Voltage
4.26
R_PROG = 1k
4.24 TA = 25°C
I_BAT = 10mA
4.22
4.20
4.18
4.16
4.14
4.12
4.10
4.0 4.5
5.0 5.5 6.0 6.5
V_CC (V)
7.0 7.5 8.0
4061 G03
PROG Pin Voltage vs V_CC
(Constant-Current Mode)
1.006
1.004
V_CC = 5V
V_BAT = 4V
R_PROG = 10k
C/5 = 5V
1.002
1.000
0.998
0.996
0.994
4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0
V_CC (V)
4061 G06
Charge Current vs Battery Voltage
550
C/5 = 5V
450
350
250
150
C/5 = 0V
50
3.0 3.2
V_CC = 5V
R_PROG = 2k
3.4 3.6
V_BAT (V)
3.8 4.0
4061 G09
4061fa