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參數(shù)資料
| 型號： | LTC4425IDD#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO12 |
| 封裝： | 3 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, DFN-12 |
| 文件頁數(shù)： | 16/20頁 |
| 文件大?。?/td> | 239K |
| 代理商： | LTC4425IDD#TRPBF |
LTC4425
5
4425f
TYPICAL PERFORMANCE CHARACTERISTICS
Charge Current
vs (VIN–VOUT) Differential
PROG Pin Voltage
vs (VIN – VOUT) Differential
VIN Quiescent Current
vs Temperature (VIN ≥ VOUT)
Charge Current
vs Junction Temperature
Charge Current
vs VOUT in Thermal Regulation
VOUT Quiescent Current
vs Temperature (VIN < VOUT)
LDO Regulation Voltage
vs Charge Current
LDO Regulation Voltage
vs Temperature
Charger FET On-Resistance
vs Supply Voltage
ICHG (mA)
0
3.255
VOL
TAGE
(V)
3.290
3.285
3.280
3.275
3.270
3.265
3.260
3.295
200
1000
1200
400
600
800
4425 G01
VIN = 3.8V
RPROG = 1k
VOUT SET FOR 3.3V
TEMPERATURE (°C)
–45
3.277
V
OUT
(V)
3.285
3.284
3.283
3.282
3.281
3.280
3.278
3.279
3.286
–30
30
45
60
75
90
–15
0
15
4425 G02
VIN = 3.8V
VOUT SET FOR 3.3V
INPUT VOLTAGE (V)
2.7
0
ON-RESIST
ANCE
(mΩ)
70
60
50
40
30
10
20
80
3
4.2
4.5
4.8
3.3
3.6
3.9
4425 G03
25°C
90°C
–45°C
VIN TO VOUT DIFFERENTIAL (V)
0
CHARGE
CURRENT
(mA)
1000
800
600
200
400
1200
0.1
0.5 0.6 0.7 0.8 0.9
1
0.2 0.3 0.4
4425 G04
NORMAL MODE
VIN = 3.8V
RPROG = 1k
LDO MODE (FB GROUNDED)
VIN TO VOUT DIFFERENTIAL (V)
0
PROG
VOL
TAGE
(mV)
1000
800
400
200
600
1200
0.1
0.5 0.6 0.7 0.8 0.9
1
0.2 0.3 0.4
4425 G05
VIN = 3.8V
RPROG = 1k
NORMAL MODE
LDO MODE (FB GROUNDED)
TEMPERATURE (°C)
–45
0
CURRENT
(μA)
20
15
5
10
25
–25
55
75
90
–5
15
35
4425 G06
VIN = 3.8V
VIN = 2.7V
TEMPERATURE (°C)
–45
0
CHARGE
CURRENT
(mA)
800
1000
600
200
400
1200
–30
30 45 60 75 90 105 120
–15 0
15
4425 G07
VIN = 3.8V
RPROG = 1k, FB GROUNDED
OUTPUT VOLTAGE (V)
0
CHARGE
CURRENT
(mA) 2000
2500
1500
500
1000
3000
0.5
2.5
3
3.5
4
4.5
1
1.5
2
4425 G08
THERMAL REGULATION
ON-CHIP POWER DISSIPATION ~4W
CASE TEMP ~100°C
VIN = 5V
FB, PROG PINS SHORTED TO GND
AMBIENT TEMP 25°C
TEMPERATURE (°C)
–45
0
CURRENT
(μA)
8
10
12
14
16
18
6
2
4
20
–25
55
75
90
–5
15
35
4425 G09
VOUT = 3.8V
VOUT = 2.7V
TA = 25°C, unless otherwise noted.
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