LTC4069 Datasheet, PDF (4/16 Pages) Linear Technology – Standalone 750mA Li-Ion Battery Charger in 2 × 2 DFN with NTC Thermistor Input

LTC4069
TYPICAL PERFORMANCE CHARACTERISTICS
Battery Regulation (Float) Voltage
vs Battery Charge Current
4.24
V_CC = 5V
4.23 ^TA ^{= 25°C}
R_PROG = 2k
4.22
4.21
4.20
4.19
4.18
4.17
4.16
0
100 200 300 400 500
I_BAT (mA)
4069 G01
Charge Current vs Supply Voltage
(Constant-Current Mode)
200
R_PROG = 10k
175 ^VBAT ^{= 3.8V}
T_A = 25°C
150
125
100
75
50
25
0
4
4.5
5
5.5
6
SUPPLY VOLTAGE (V)
4069 G04
PROG Pin Voltage vs Temperature
(Constant-Current Mode)
1.02
V_CC = 5V
V_BAT = 3.8V
R_PROG = 10k
1.01
1.00
0.99
0.98
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
4069 G07
4
Battery Regulation (Float) Voltage
vs Temperature
4.24
4.23
4.22
4.21
4.20
4.19
4.18
4.17
4.16
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
4069 G02
Charge Current vs Battery Voltage
600
V_CC = 5V
T_A = 25°C
500 R_PROG = 2k
400
300
200
100
0
0
1
2
3
V_BAT (V)
4
5
4069 G05
PROG Pin Voltage
vs Charge Current
1.2
V_CC = 5V
T_A = 25°C
1.0 R_PROG = 2k
0.8
0.6
0.4
0.2
0
0 100 200 300 400 500
I_BAT (mA)
4069 G08
Battery Regulation (Float) Voltage
vs Supply Voltage
4.24
T_A = 25°C
4.23 ^{IBAT = 2mA}
R_PROG = 2k
4.22
4.21
4.20
4.19
4.18
4.17
4.16
4
4.5
5
5.5
6
SUPPLY VOLTAGE (V)
4069 G03
Charge Current vs Ambient
Temperature with Thermal
Regulation (Constant-Current Mode)
600
500
400
THERMAL CONTROL
LOOP IN OPERATION
300
200
100 ^VCC ^{= 5V}
V_BAT = 3.8V
R_PROG = 2k
0
–50
0
50
100
TEMPERATURE (°C)
150
4069 G06
Power FET On-Resistance
vs Temperature
550
V_CC = 4V
I_BAT = 400mA
500
450
400
350
300
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4069 G09
4069fb