LTC4058X-4.2_15 Datasheet, PDF (4/12 Pages) Linear Technology – Standalone Linear Li-Ion Battery Charger with Thermal Regulation in DFN

LTC4058-4.2/LTC4058X-4.2
TYPICAL PERFOR A CE CHARACTERISTICS
Regulated Output (Float) Voltage
vs Charge Current
4.26
V_CC = 5V
4.24 ^TA ^{= 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)
405842 G04
CHRG Pin I-V Curve
(Pull-Down State)
30
T_A = –40°C
25
T_A = 25°C
20
T_A = 90°C
15
10
5
0
01
V_CC = 5V
V_BAT = V_BSENSE = 4V
2 34 5
V_CHRG (V)
67
405842 G07
Trickle Charge Current
vs Supply Voltage
60
V_BAT = V_BSENSE = 2.5V
T_A = 25°C
50
R_PROG = 2k
40
30
20
R_PROG = 10k
10
0
4 4.5 5 5.5 6
V_CC (V)
6.5 7
405842 G10
4
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
405842 G05
ACPR Pin I-V Curve
(Pull-Down State)
30
T_A = –40°C
25
T_A = 25°C
20
T_A = 90°C
15
10
5
0
01
V_CC = 5V
V_BAT = V_BSENSE = 4V
2 34 5
V_ACPR (V)
67
405842 G08
Trickle Charge Threshold Voltage
vs Temperature
3.000
V_CC = 5V
2.975 ^RPROG ^{= 10k}
2.950
2.925
2.900
2.875
2.850
2.825
2.800
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
405842 G11
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 4.5 5 5.5 6
V_CC (V)
Trickle Charge Current
vs Temperature
60
V_CC = 5V
V_BAT = V_BSENSE = 2.5V
50
R_PROG = 2k
40
6.5 7
405842 G06
30
20
R_PROG = 10k
10
0
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
405842 G09
Charge Current vs Battery Voltage
600
500
400
300
200
100
0
2.4 2.7
V_CC = 5V
θ_JA = 40°C/W
R_PROG = 2k
3 3.3 3.6 3.9 4.2 4.5
V_BAT (V)
405842 G08
sn405842 405842fs