Specifications

LTC4056-4.2
4
405642f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
I
BAT
vs Temperature and
Supply Voltage I
BAT
vs V
BAT
Timer Error vs Temperature
TEMPERATURE (°C)
–50
670
I
BAT
(mA)
680
690
700
710
730
–25
02550
4056-4.2 G04
75 100
720
R
PROG
= 1.30k
PNP = FZT749
V
CC
= 6.5V
V
CC
= 4.75V
V
BAT
(V)
0
I
BAT
(mA)
300
400
500
3
5
4056-4.2 G05
200
100
0
12 4
600
700
800
V
CC
= 5V
T
A
= 25°C
PNP = FZT749
R
PROG
1.30k
BAT PIN MUST BE
DISCONNECTED
AND SET BETWEEN
2.9V AND 4.2V TO
FORCE CC MODE
IN THIS AREA
R
PROG
4.53k
TEMPERATURE (°C)
–50
–5
TIMER ERROR (%)
–4
–2
–1
0
5
2
0
50
75
4056-4.2 G06
–3
3
4
1
–25
25
100
125
V
CC
= 5V
R
PROG
= 1.43k
TIMER/SHDN Pin Pull-Up Current
vs Temperature and Supply Voltage
TEMPERATURE (°C)
–50
I
SHDN
(µA)
8
10
12
25 75
4056-4.2 G07
6
4
–25 0
50 100 125
2
0
V
TIMER/SHDN
= 0V
V
CC
= 6.5V
V
CC
= 4.75V
CHRG Pin Weak Pull-Down Current
vs Temperature and V
CHRG
TEMPERATURE (°C)
–50
5
I
CHRG
(µA)
10
15
20
–25 0 25 50
4056-4.2 G08
75 100 125
V
TIMER/SHDN
= 0V
V
CC
= 5V
V
CHRG
= 6.5V
V
CHRG
= 1V
CHRG Pin Output Low Voltage
vs Temperature
PROG Pin Voltage
vs Temperature and R
PROG
TEMPERATURE (°C)
–50
V
PROG
(V)
1.0050
1.0025
1.0000
0.9975
0.9950
–25 0 25 50
4056-4.2 G10
75 100 125
V
CC
= 5V
R
PROG
= 4.53k
R
PROG
= 1.30k
TEMPERATURE (°C)
–50
0.20
V
CHRG
(V)
0.25
0.30
0.35
0.40
–25 0 25 50
4056-4.2 G09
75 100
V
BAT
= 0V
I
CHRG
= 10mA
V
CC
= 5V