LTC4425EDD LINER [Linear Technology], LTC4425EDD Datasheet - Page 5

• Manufacturer Part Number: LTC4425EDD
• Description: Linear SuperCap Charger with Current-Limited Ideal Diode and V/I Monitor
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFORMANCE CHARACTERISTICS
3.295
3.290
3.285
3.280
3.275
3.270
3.265
3.260
3.255
1200
1000
1200
1000
800
600
400
200
800
600
400
200
0
0
–45
0
0
LDO Regulation Voltage
vs Charge Current
Charge Current
vs (V
Charge Current vs Temperature in
Thermal Regulation
V
R
V
R
V
IN
OUT
IN
PROG
–30
PROG
0.1
= 3.8V, I
= 3.8V, V
200
SET FOR 3.3V
–15 0 15
IN
0.2 0.3 0.4
V
= 1k, FB GROUNDED
= 1k
–V
IN
TO V
OUT
OUT
OUT
TEMPERATURE (°C)
400
OUT
= 10mA
= 3.5V
) Differential
LDO MODE (FB GROUNDED)
I
OUT
30 45 60 75 90 105 120
DIFFERENTIAL (V)
600
0.5 0.6 0.7 0.8 0.9 1
(mA)
800
NORMAL MODE
R
V
PROG
1000
IN
= 3.8V
3586 G35
= 1k
4425 G04
4425 G07
1200
3.286
3.285
3.284
3.283
3.282
3.281
3.280
3.279
3.278
3.277
1200
1000
3000
2500
2000
1500
1000
800
600
400
200
500
0
0
–45
0
0
LDO Regulation Voltage
vs Temperature
PROG Pin Voltage
vs (V
Charge Current vs V
Thermal Regulation
THERMAL REGULATION
ON-CHIP POWER DISSIPATION ~4W
CASE TEMP ~100°C
V
V
V
PROG PIN SHORTED TO GND
FB PIN SHORTED TO GND
AMBIENT TEMP 24°C
IN
OUT
IN
0.1
–30
0.5
= 3.8V
= 5V
SET FOR 3.3V
IN
0.2 0.3 0.4
V
–15 0
IN
1
– V
TO V
OUTPUT VOLTAGE (V)
TEMPERATURE (°C)
1.5
OUT
OUT
LDO MODE (FB GROUNDED)
) Differential
15
2
DIFFERENTIAL (V)
0.5 0.6 0.7 0.8 0.9 1
2.5
30
OUT
NORMAL MODE
45
3
in
R
60
3.5
V
PROG
IN
= 3.8V
75
4
4425 G02
= 1k
4425 G05
4425 G08
90
4.5
80
70
60
50
40
30
20
10
25
20
15
10
20
18
16
14
12
10
0
5
0
8
6
4
2
0
–45
–45
2.7
Charger FET On-Resistance
vs Supply
V
and Temperature (V
V
and Temperature (V
V
IN
OUT
IN
< V
–25
Quiescent Current vs Supply
–25
3
Quiescent Current vs V
OUT
3.3
–5
–5
TEMPERATURE (°C)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
V
V
IN
IN
V
IN
3.6
= 3.8V
= 2.7V
15
15
= 3.8V
LTC4425
–45°C
90°C
25°C
3.9
35
35
IN
IN
V
≥ V
≥ V
OUT
4.2
55
55
OUT
OUT
= 2.7V
4.5
OUT
)
)
75
75
4425 G03
4425 G06
4425 G09
5
4425p
4.8