LTC4054L-4.2 Datasheet, PDF (5/16 Pages) Linear Technology – 150mA Standalone Linear Li-Ion Battery Charger in ThinSOT

TYPICAL PERFOR A CE CHARACTERISTICS
CHRG Pin Current vs Temperature
(Weak Pull-Down State)
28
V_CC = 5V
V_BAT = 4.3V
25 V_CHRG = 5V
22
19
16
13
10
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4054L G13
Trickle Charge Threshold
vs Temperature
3.000
V_CC = 5V
2.975 ^{RPROG = 1k}
2.950
2.925
2.900
2.875
2.850
2.825
2.800
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
4054L G16
Charge Current
vs Ambient Temperature
180
R_PROG = 1k
150
120
V_BAT = 4V
90 V_CC = 5V
θ_JA = 125°C/W
60
ONSET OF
THERMAL
REGULATION
30
R_PROG = 15k
0
–50 –25 0 25 50 75
TEMPERATURE (°C)
100 125
4054L G19
Trickle Charge Current
vs Temperature
15
R_PROG = 1k
12
9
V_CC = 5V
V_BAT = 2.5V
6
3
R_PROG = 15k
0
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4054L G14
Charge Current vs Battery Voltage
160
120
V_CC = 5V
80
R_PROG = 1k
T_A = 25°C
θ_JA = 125°C/W
40
0
2.7 3.0 3.3 3.6 3.9 4.2 4.5
V_BAT (V)
4054L G17
Recharge Voltage Threshold
vs Temperature
4.11
V_CC = 5V
R_PROG = 1k
4.09
4.07
4.05
4.03
4.01
3.99
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4054L G20
LTC4054L-4.2
Trickle Charge Current
vs Supply Voltage
15
R_PROG = 1k
12
9
V_BAT = 2.5V
T_A = 25°C
6
3
R_PROG = 15k
0
4 4.5 5 5.5 6
V_CC (V)
6.5 7
4054L G15
Charge Current vs Supply Voltage
200
V_BAT = 4V
T_A = 25°C
160 ^{θJA = 125°C/W}
R_PROG = 1k
120
80
40
R_PROG = 15k
0
4 4.5 5 5.5 6
V_CC (V)
6.5 7
4054L G18
Power FET “ON” Resistance
vs Temperature
1.8
V_CC = 4.1V
V_BAT = 4V
1.6 ^{RPROG = 1k}
1.4
1.2
1.0
0.8
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4054L G21
4054l42f
5