LTC4056-4.2_15 Datasheet, PDF (4/16 Pages) Linear Technology – Linear Li-Ion Charger with Termination in ThinSOT

LTC4056-4.2
TYPICAL PERFOR A CE CHARACTERISTICS
I_BAT vs Temperature and
Supply Voltage
730
R_PROG = 1.30k
PNP = FZT749
720
V_CC = 6.5V
710
V_CC = 4.75V
700
690
680
670
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4056-4.2 G04
I_BAT vs V_BAT
800
V_CC = 5V
700
T_A = 25°C
PNP = FZT749
600
R_PROG
1.30k
500
BAT PIN MUST BE
400
DISCONNECTED
AND SET BETWEEN
300
2.9V AND 4.2V TO
FORCE CC MODE
200
IN THIS AREA
R_PROG
4.53k
100
0
0
1
2
3
4
5
V_BAT (V)
4056-4.2 G05
Timer Error vs Temperature
5
V_CC = 5V
4 _{RPROG = 1.43k}
3
2
1
0
–1
–2
–3
–4
–5
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4056-4.2 G06
TIMER/SHDN Pin Pull-Up Current
vs Temperature and Supply Voltage
12
V_TIMER/SHDN = 0V
10
CHRG Pin Weak Pull-Down Current
vs Temperature and V_CHRG
20
V_TIMER/SHDN = 0V
V_CC = 5V
8
V_CC = 6.5V
6
V_CC = 4.75V
4
15
V_CHRG = 6.5V
10
V_CHRG = 1V
2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4056-4.2 G07
CHRG Pin Output Low Voltage
vs Temperature
0.40
V_BAT = 0V
I_CHRG = 10mA
V_CC = 5V
0.35
0.30
5
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4056-4.2 G08
PROG Pin Voltage
vs Temperature and R_PROG
1.0050
V_CC = 5V
1.0025
1.0000
R_PROG = 4.53k
R_PROG = 1.30k
0.25
0.9975
4
0.20
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4056-4.2 G09
0.9950
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4056-4.2 G10
405642f