LTC4061 Datasheet, PDF (5/20 Pages) Linear Technology – Standalone Linear Li-lon Battery Charger with Thermistor Input

TYPICAL PERFOR A CE CHARACTERISTICS
LTC4061
Internal Charge Timer vs
Temperature
195
190
V_CC = 4.3V
185
V_CC = 8V
180
175
170
165
–50 –25 0
C_TIMER = 0.1µF
25 50 75 100
TEMPERATURE (°C)
4061 G10
Charge Current vs Ambient
Temperature with Thermal
Regulation
1000
ONSET OF THERMAL
REGULATION
800
R_PROG = 1.25k
600
R_PROG = 2k
400
200
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4061 G13
Power FET “ON” Resistance vs
Temperature
500
V_CC = 4V
I_BAT = 200mA
450
400
350
300
250
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4061 G16
NTC Fault Pulsing Frequency
vs V_CC
1.60
C_TIMER = 0.1µF
1.55
1.50
1.45
1.40
1.35
1.30
4.0
4.5 5.0
5.5 6.0 6.5
V_CC (V)
7.0 7.5 8.0
4061 G11
Charge Current vs Supply Voltage
104 _{VCC = 5V}
V_BAT = 4V
C/5 = 5V
102 ^{RPROG = 10k}
100
98
96
4.0
4.5 5.0
5.5 6.0 6.5
V_CC (V)
7.0 7.5 8.0
4061 G14
Undervoltage Lockout Voltage vs
Temperature
3.900
3.875
3.850
3.825
3.800
3.775
3.750
3.725
3.700
–50 –25
0 25 50
TEMPERATURE (°C)
75 100
4061 G17
NTC Fault Pulsing Frequency
vs Temperature
1.7
C_TIMER = 0.1µF
1.6
V_CC = 8V
1.5
V_CC = 4.3V
1.4
1.3
1.2
–50 –25
0 25 50
TEMPERATURE (°C)
75 100
4061 G12
Recharge Threshold Voltage vs
Temperature
4.16
4.14
4.12
V_CC = 8V
4.10
V_CC = 4.3V
4.08
4.06
4.04
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4061 G15
Charge Current vs Battery Voltage
900
800
700
600
500
400
300
200
100
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
V_BAT (V)
4061 G18
4061fa
5