LTC4053-4.2_15 Datasheet, PDF (5/16 Pages) Linear Technology – USB Compatible Lithium-Ion Battery Charger with Thermal Regulation

TYPICAL PERFOR A CE CHARACTERISTICS
LTC4053-4.2
PROG Pin Voltage
vs Charge Current
1.6
V_CC = 5V
1.4 ^TA ^{= 25°C}
R_PROG = 3k
1.2
1.0
0.8
0.6
0.4
0.2
0
0 50 100 150 200 250 300 350 400 450 500
CHARGE CURRENT (mA)
4052 G10
PROG Pin Voltage vs V_CC
Constant Current Mode
1.515
1.510
V_BAT = 3.5V
T_A = 25°C
R_PROG = 3k
1.505
1.500
1.495
1.490
1.485
4 4.5 5 5.5 6
V_CC (V)
6.5 7
4053 G11
PROG Pin Voltage vs Temperature
Constant Current Mode
1.515
1.510
V_CC = 5V
V_BAT = 4V
R_PROG = 3k
1.505
1.500
1.495
1.490
1.485
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4053 G12
Trickle Charge Current
vs Temperature
12
V_BAT = 2V
T_A = 25°C
11 ^{RPROG = 3k}
10
9
8
7
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4053 G13
CHRG Pin Weak Pull-Down
Current vs Temperature
35
V_CC = 5V
34 I_BAT < C/10
33
32
31
30
29
28
27
26
25
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LTC1323 • TPC05
CHRG Pin Output Low Voltage
vs Temperature
0.6
V_CC = 5V
I_CHRG = 5mA
0.5
0.4
0.3
0.2
0.1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4053 G15
Timer Error vs Temperature
5
V_CC = 5V
4 _{CTIMER = 0.1µF}
3
2
1
0
–1
–2
–3
–4
–5
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LTC1323 • TPC05
Timer Error vs V_CC
5
T_A = 25°C
4 C_TIMER = 0.1µF
3
2
1
0
–1
–2
–3
–4
–5
4 4.5 5 5.5 6
V_CC (V)
6.5 7
4056 G17
4053fa
5