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参数资料
| 型号： | LT3587EUD#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封装： | 3 X 3 MM, LEAD FREE, PLASTIC, QFN-20 |
| 文件页数： | 12/24页 |
| 文件大小： | 395K |
| 代理商： | LT3587EUD#TRPBF |
LT3587
2
3587fc
ABSOLUTE MAXIMUM RATINGS
VIN ..............................................................................6V
Soft-Start Input Pins
EN/SS1, EN/SS3 .....................................................6V
Feedback Pins
FB1, FB2, IFB3, VFB3 ................................. –0.2V to 6V
High Voltage Switch Pins
SW1, SW2, SW3...................................................40V
High Voltage Output Pins
CAP1, CAP3, VOUT1, VOUT3 ...................................32V
Bidirectional I/O Pin
FLT ..........................................................................6V
FLT Current ........................................................10mA
Operating Junction Temperature Range.. –40°C to 125°C
Storage Temperature Range................... –65°C to 125°C
(Note 1)
20 19 18 17 16
7
8
TOP VIEW
21
UD PACKAGE
20-LEAD (3mm
3mm) PLASTIC QFN
9 10
VOUT3
CAP3
SW3
GND
FLT
FB1
VOUT1
CAP1
GND
SW1
V
FB3
I FB3
EN/SS3
V
IN
EN/SS1
FB2
GND
SW2
NC
12
11
13
14
15
4
5
3
2
1
6
θJA = 68°C/W, θJC = 4.2°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Operating Input Voltage Range
2.5
6
V
Quiescent Current
VEN/SS1 = 0V, VEN/SS3 = VVIN OR
VEN/SS1 = VVIN, VEN/SS3 = 0V OR
VEN/SS1 = VEN/SS3 = VVIN
Not Switching
2.4
4
mA
VEN/SS1 = VEN/SS3 = 0V, In Shutdown
5.5
9
μA
Switching Frequency
l
0.8
1
1.2
MHz
Maximum Duty Cycle
l
87
93
%
Minimum On Time
50
70
ns
Power Fault Delay from Any Output to FLT
16
ms
FLT Input Threshold Low
l
0.4
1.0
1.6
V
FLT Leakage Current
VFLT = 5V
l
±1
μA
FLT Voltage Output Low
IFLT = 1mA
l
0.4
V
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3587EUD#PBF
LT3587EUD#TRPBF
LDNC
20-Lead (3mm
× 3mm) Plastic QFN
–40°C to 125°C
Consult LTC Marketing for parts specied with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specications, go to: http://www.linear.com/tapeandreel/
PIN CONFIGURATION
ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VVIN = 3.6V, VEN/SS1 = VEN/SS3 = VVIN unless otherwise noted (Note 2, 3).
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