LTC1704BEGN 查看數據表（PDF） - Linear Technology
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LTC1704BEGN
Linear Technology
LTC1704BEGN Datasheet PDF : 28 Pages
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LTC1704/LTC1704B
TYPICAL PERFOR A CE CHARACTERISTICS
VOUTREG Load Regulation
0.5
0.03
0
0
–0.5
– 0.03
–1.0
–0.07
–1.5
–0.10
–2.0
TA = 25°C
–2.5
VOUTREG = 1.5V
IREGILM = 9µA
QEXT = D44H11
–3.0
0
0.4 0.8 1.2
IOUTREG (A)
–0.13
–0.17
–0.20
1.6
2
1704 G18
Linear Regulator Dropout Voltage
vs Temperature
1.1
IREGDR = –30mA
1.0 VREGDR = 3.3V
0.9
VOUTREG 0.1A to 2.1A Load Step
VOUT
0.8
0.7
ILOAD
0.6
0.5
0.4
0.3
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1704 G19
50µs/DIV
CH1: VOUTREG = 1.5V, AC 50mV/DIV
CH2: 0.1A to 2.1A LOAD, 1A DIV
1704 G20
Minimum VCC vs VOUTREG
5.5
IREGILM = 9µA
IOUTREG = 2A
5.0
∆VOUTREG = –1%
QEXT = D44H11
4.5
4.0
TA = –40°C
3.5
TA = 25°C
3.0
0.9 1.3 1.7 2.1 2.5
VOUTREG (V)
2.9 3.3
1704 G21
Linear Regulator Start-Up Time
vs CDELAY
1100
1000
TA = 25°C
VOUTREG = 1.5V
900
800
700
600
IREGILM = 6.2µA
500
400
IREGILM = 9µA
300
200
100
0
0 2000 4000 6000 8000 10000
CDELAY (pF)
1704 G22
IREGDR vs IREGILM
35
30
25
20
15
10
5
0
02
4
6
8
IREGILM (µA)
10 12
1704 G23
IREGDR vs VREGFB
30
TA = 25°C
VREGDR = 0V
25
20
IREGILM = 9µA
15
Linear Regulator Current Limit
Threshold vs Temperature
3.0
2.5
2.0
VOUTREG vs Load Current
2.0
1.5
1.0
10
IREGILM = 6.2µA
5
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
VREGFB (V)
1704 G28
1.5 VINREG = 1.8V
VOUTREG = 1.5V
IREGILM = 9µA
QEXT = D44H11
1.0
–50 –25 0 25 50 75
TEMPERATURE (°C)
100 125
1704 G24
0.5
TA = 25°C
VINREG = 1.8V
VOUTREG = 1.5V
IREGILM = 9µA
QEXT = D44H11
0
0 0.5 1 1.5 2
IOUTREG (A)
2.5 3
1704 G25
1704bfa
6
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