LTC4054X-4.2_15 Datasheet, PDF (4/16 Pages) Linear Technology – Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT

LTC4054-4.2/LTC4054X-4.2
TYPICAL PERFOR A CE CHARACTERISTICS
PROG Pin Pull-Up Current vs
Temperature and Supply Voltage
3.7
V_BAT = 4.3V
V_PROG = 0V
3.5
V_CC = 4.2V
3.3
3.1
V_CC = 6.5V
2.9
2.7
2.5
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4054 G04
Regulated Output (Float) Voltage
vs Charge Current
4.26
V_CC = 5V
4.24 T_A = 25°C
R_PROG = 1.25k
4.22
4.20
4.18
4.16
4.14
4.12
4.10
0
100 200 300 400 500 600 700
I_BAT (mA)
4054 G07
CHRG Pin I-V Curve
(Strong Pull-Down State)
25
20
15
10
5
0
01
V_CC = 5V
V_BAT = 4V
T_A = 25°C
2 34 5 6 7
V_CHRG (V)
4054 G10
4
PROG Pin Current vs PROG Pin
Voltage (Pull-Up Current)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
V_CC = 5V
V_BAT = 4.3V
T_A = 25°C
0
2.0 2.1 2.2 2.3 2.4
V_PROG (V)
2.5 2.6
4054 G05
Regulated Output (Float) Voltage
vs Temperature
4.215
4.210
V_CC = 5V
R_PROG = 10k
4.205
4.200
4.195
4.190
4.185
–50 –25
0 25 50
TEMPERATURE (°C)
75 100
4054 G08
CHRG Pin Current vs Temperature
(Strong Pull-Down State)
20
V_CC = 5V
18 V_BAT = 4V
V_CHRG = 1V
16
14
12
10
8
6
4
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4054 G11
PROG Pin Current vs PROG Pin
Voltage (Clamp Current)
0
–50
–100
–150
–200
–250
–300
V_CC = 5V
–350 _{VBAT = 4.3V}
T_A = 25°C
–400
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
V_PROG (V)
4054 G06
Regulated Output (Float) Voltage
vs Supply Voltage
4.215
4.210
T_A = 25°C
R_PROG = 10k
4.205
4.200
4.195
4.190
4.185
4.0 4.5 5.0 5.5 6.0
V_CC (V)
6.5 7.0
4054 G09
CHRG Pin I-V Curve
(Weak Pull-Down State)
22
20
18
16
14
12
10
8
01
V_CC = 5V
V_BAT = 4.3V
T_A = 25°C
2 34 5 6 7
V_CHRG (V)
4054 G12
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