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參數(shù)資料
| 型號： | LT3587EUD#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封裝： | 3 X 3 MM, LEAD FREE, PLASTIC, QFN-20 |
| 文件頁數(shù)： | 20/24頁 |
| 文件大小： | 395K |
| 代理商： | LT3587EUD#PBF |
LT3587
5
3587fc
TYPICAL PERFORMANCE CHARACTERISTICS
Switching Frequency
vs Temperature
Switches VCESAT vs Current
Switches Current Limit
vs Temperature
Specications are at TA = 25°C unless otherwise noted.
SW1 and SW2 Current Limit
vs EN/SS1 Voltage
TEMPERATURE (°C)
–50
FREQUENCY
(MHz)
1.20
1.10
1.00
0.90
0.80
25
075
3587 G08
125
100
–25
50
VVIN = 3.6V
SW CURRENT (A)
0
V
CESA
T(V)
0.5
0.4
0.3
0.2
0.1
0
0.4
0.2
0.8
3587 G09
1.2
1
0.6
VVIN = 3.6V
SW1
SW2
SW3
TEMPERATURE (°C)
–50
CURRENT
LIMIT
(A)
1.2
1.0
0.4
0.6
0.8
0.2
0
25
075
3587 G10
125
100
–25
50
VVIN = 3.6V
DUTY CYCLE = 60%
SW1
SW2
SW3
DUTY CYCLE (%)
0
CURRENT
LIMIT
(A)
2.5
2.0
1.0
1.5
0.5
0
60
50
40
20 30
80
3587 G11
100
90
10
70
VVIN = 3.6V
SW1
SW2
SW3
EN/SS1 VOLTAGE (V)
0.5
CURRENT
LIMIT
(A)
1.6
1.2
0.4
0.8
0
1.7
1.5
1.3
0.9 1.1
2.1
3587 G12
2.5
2.3
0.7
1.9
VVIN = 3.6V
DUTY CYCLE = 60%
SW1
SW2
Switches Current Limit
vs Duty Cycle
SW3 Current Limit
vs EN/SS3 Voltage
EN/SS3 VOLTAGE (V)
0.5
CURRENT
LIMIT
(A)
0.5
0.4
0.2
0.1
0.3
0
1.7
1.5
1.3
0.9 1.1
2.1
3587 G13
2.5
2.3
0.7
1.9
VVIN = 3.6V
SW3
EN/SS1, EN/SS3 Pull-Up Current
In Shutdown vs Temperature
TEMPERATURE (°C)
–50
PULL-UP
CURRENT
(μA)
1.50
1.25
0.75
1.00
0.50
25
075
3587 G16
125
100
–25
50
VVIN = 3.6V
EN/SS1 = EN/SS3 = 0V
Output Disconnects On Resistance
vs Temperature (RDISC1, RDISC3)
Output Disconnects Current Limit
vs Temperature
TEMPERATURE (°C)
–50
ON
RESIST
ANCE
(Ω)
14
12
6
8
10
4
2
25
075
3587 G14
125
100
–25
50
VVIN = 3.6V
IVOUT1 = 50mA
IVOUT3 = 20mA
RDISC1
RDISC3
TEMPERATURE (°C)
–50
OUTPUT
DISCONNECTS
CURRENT
LIMIT
(mA)
200.0
167.5
102.5
135.0
70
25
075
3587 G15
125
100
–25
50
VVIN = 3.6V
VVOUT1 = VVOUT3 = 15V
IVOUT1
IVOUT3
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