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參數(shù)資料
| 型號： | LLT3837EFE |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 110 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 4.40 MM, PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 12/28頁 |
| 文件大小： | 255K |
| 代理商： | LLT3837EFE |
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LT3837
2
3837fa
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
VCC to GND ................................................ –0.3V to 22V
UVLO, SYNC Pin Voltage ............................–0.3V to VCC
SENSE–, SENSE+ Pin Voltage...................... –0.5V, +0.5V
FB Pin Current........................................................±2mA
VC Pin Current........................................................±1mA
Operating Junction Temperature Range
(Notes 2, 3) .......................................... –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
(Note 1)
The
l denotes specications which apply over the full operating
temperature range, otherwise specications are TA = 25°C. VCC = 14V; PG, SG Open; VC = 1.4V, VSENSE = 0, RCMP = 1k, RTON = 90k,
RPGDLY = 27.4k, RENDLY = 90k, unless otherwise specied.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply
VCC Operating Range
l
4.5
20
V
VCC Supply Current (ICC) (Note 5)
VC = Open
l
4
6.4
10
mA
VCC Shutdown Current
VC = Open, VUVLO = OV
l
50
150
μA
Feedback Amplier
Feedback Regulation Voltage (VFB)
l
1.220
1.237
1.251
V
Feedback Pin Input Bias Current
RCMP Open
200
nA
Feedback Amplier Transconductance
ΔIC = ±10μA
l
700
1000
1400
μmho
Feedback Amplier Source or Sink Current
l
25
55
90
μA
Feedback Amplier Clamp Voltage
VFB = 0.9
VFB = 1.4
2.56
0.84
V
Reference Voltage/Current Line Regulation
12V ≤ VIN ≤ 18V
l
0.005
0.05
%V
PIN CONFIGURATION
FE PACKAGE
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
SG
VCC
tON
ENDLY
SYNC
SFST
OSC
FB
PG
PGDLY
RCMP
CCMP
SENSE+
SENSE–
UVLO
VC
17
TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W
EXPOSED PAD (PIN 17) IS GND,MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3837EFE#PBF
LT3837EFE#TRPBF
3837EFE
16-Lead Plastic TSSOP
–40°C to 125°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LLT3837EFE
LT3837EFE#TR
3837EFE
16-Lead Plastic TSSOP
–40°C to 125°C
Consult LTC Marketing for parts specied with wider operating temperature ranges.
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/
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