LTC4053-4.2_15 Datasheet, PDF (4/16 Pages) Linear Technology – USB Compatible Lithium-Ion Battery Charger with Thermal Regulation

LTC4053-4.2
TYPICAL PERFOR A CE CHARACTERISTICS
Battery Regulation Voltage
vs Battery Charge Current
4.22
V_CC = 5V
T_A = 25°C
4.21 R_PROG = 3k
4.20
4.19
4.18
4.17
4.16
0 50 100 150 200 250 300 350 400 450 500
I_BAT (mA)
4053 G01
Charge Current vs Input Voltage
600
500 ^{VBAT = 3.95V}
T_A = 25°C
R_PROG = 3k
400
V_BAT = 4.05V
300
200
V_BAT = 4.15V
100
0
4.0
4.5
5.0
V_CC (V)
5.5
4053 G04
Undervoltage Lockout Voltage
vs Temperature
4.05
4.04
4.03
4.02
4.01
4.00
3.99
3.98
3.97
3.96
3.95
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
4053 G07
4
Battery Regulation Voltage
vs Temperature
4.24
4.22
4.20
4.18
4.16
4.14
4.12
4.10
V_CC = 5V
4.08 RPROG = 3k
I_BAT = 10mA
4.06
–50 –25 0
25 50 75
TEMPERATURE (°C)
100 125
4053 G02
Charge Current vs Battery Voltage
550
500
V_CC = 5V
T_A = 25°C
450 ^RPROG ^{= 3k}
400
350
300
250
200
150
100
50
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
V_BAT (V)
4053 G05
Shutdown Supply Current
vs Temperature
30
V_SHDN = 0V
25
V_CC = 6.5V
V_CC = 5.5V
20
15
V_CC = 4.5V
10
5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4053 G08
Battery Regulation Voltage
vs V_CC
4.210
4.208
4.206
V_CC = 5V
R_PROG = 3k
I_BAT = 10mA
4.204
4.202
4.200
4.198
4.196
4.194
4.192
4.190
4 4.5 5 5.5 6 6.5 7
V_CC (V)
4053 G03
Charge Current vs Ambient
Temperature with Thermal
Regulation
1000
900
800
700
600
THERMAL CONTROL
500
LOOP IN OPERATION
400
300
200 _{VCC = 5V}
100 ^VBAT ^{= 3.5V}
R_PROG = 1.5k
0
–50 –25 0 25 50 75 100
TEMPERATURE (°C)
4053 G06
Manual Shutdown Threshold
Voltage vs Temperature
1.30
1.25
1.20
1.15
V_CC = 6V
1.10
V_CC = 5.5V
1.05
1.00
0.95
V_CC = 5V
0.90
V_CC = 4.5V
0.85
0.80
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4053 G09
4053fa