LTC4050 Datasheet, PDF (4/12 Pages) Linear Technology – Lithium-Ion Linear Battery Charger with Thermistor Interface

LTC4050
TYPICAL PERFOR A CE CHARACTERISTICS
Recharge Threshold Voltage
vs Temperature
4.1
V_CC = 6V
4.0
LTC4050-4.2
3.9
LTC4050-4.1
3.8
3.7
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LTC4050 G07
Timer Accuracy vs Temperature
110
V_CC = 6V
V_BAT = 3V
C_TIMER = 0.1µF
105
100
95
90
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LTC4050 G10
NTC R_COLD Threshold Voltage
vs Temperature
29.0 _{VCC = 6V}
28.9
28.8
28.7
28.6
28.5
28.4
28.3
28.2
28.1
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LTC4050 G13
PROG Pin Voltage vs Temperature
2.480
2.475
V_CC = 6V
R_PROG = 19.6k
2.470
2.465
2.460
2.455
2.450
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LTC4050 G08
Timer Accuracy vs V_CC
110
V_BAT = 3V
C_TIMER = 0.1µF
T_A = 25°C
105
100
95
90
4
5
6
7
8
9 10
V_CC (V)
LTC4050 G11
NTC R_HOT Threshold Voltage
vs V_CC
4.150
T_A = 25°C
4.125
4.100
4.075
4.050
4
6
8
V_CC (V)
10
LT4050 G14
PROG Pin Voltage vs V_CC
2.50 _{RPROG = 19.6k}
T_A = 25°C
2.49
2.48
2.47
2.46
2.45
4
6
8
V_CC (V)
10
LTC4050 G09
NTC R_HOT Threshold Voltage
vs Temperature
4.16
V_CC = 6V
4.14
4.12
4.10
4.08
4.06
4.04
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LTC4050 G12
NTC R_COLD Threshold Voltage
vs V_CC
28.60
T_A = 25°C
28.55
28.50
28.45
28.40
4
6
8
V_CC (V)
10
LTC4050 G15
4