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参数资料
| 型号： | LT3470HDDB#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.2 A SWITCHING REGULATOR, PDSO8 |
| 封装： | 3 X 2 MM, 0.75MM INCH HEIGHT, MO-229WECD-1, PLASTIC, DFN-8 |
| 文件页数： | 9/16页 |
| 文件大小： | 244K |
| 代理商： | LT3470HDDB#TR |
2
LT3470
3470fb
(Note 1)
VIN, SHDN Voltage .................................................. 40V
BOOST Pin Voltage ................................................. 47V
BOOST Pin Above SW Pin ...................................... 25V
FB Voltage ................................................................ 5V
BIAS Voltage ............................................................ 25V
SW Voltage ................................................................VIN
Maximum Junction Temperature
LT3470E, LT3470I ............................................ 125
°C
ABSOLUTE
AXI U
RATI GS
W
WW
U
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Input Voltage
●
4V
Quiescent Current from VIN
VSHDN = 0.2V
0.1
0.5
A
VBIAS = 3V, Not Switching
●
10
18
A
VBIAS = 0V, Not Switching
35
50
A
Quiescent Current from Bias
VSHDN = 0.2V
0.1
0.5
A
VBIAS = 3V, Not Switching
●
25
60
A
VBIAS = 0V, Not Switching
0.1
1.5
A
FB Comparator Trip Voltage
VFB Falling
●
1.228
1.250
1.265
V
FB Pin Bias Current (Note 3)
VFB = 1V, E and I-Grade
35
80
nA
●
35
150
nA
H-Grade
●
35
225
nA
The
● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
VIN = 10V, VSHDN = 10V, VBOOST = 15V, VBIAS = 3V unless otherwise specified.
ELECTRICAL CHARACTERISTICS
LT3470H .......................................................... 150
°C
Operating Temperature Range (Note 2)
LT3470E ............................................. – 40
°C to 85°C
LT3470I ............................................ – 40
°C to 125°C
LT3470H .......................................... – 40
°C to 150°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
LT3470ETS8
LT3470ITS8
LTBDM
LTBPW
SHDN 1
NC 2
VIN 3
GND 4
8 FB
7 BIAS
6 BOOST
5 SW
TOP VIEW
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
TJMAX = 125°C, θJA = 140°C/ W
WU
U
PACKAGE/ORDER I FOR ATIO
ORDER PART NUMBER
LT3470EDDB
LT3470IDDB
LT3470HDDB
Consult LTC Marketing for parts specified with wider operating temperature ranges.
N PART MARKING
ORDER PART NUMBER
TS8 PART MARKING
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
TOP VIEW
9
DDB8 PACKAGE
8-LEAD (3mm
× 2mm) PLASTIC DFN
5
6
7
8
4
3
2
1
FB
BIAS
BOOST
SW
SHDN
NC
VIN
GND
LBPN
LBPP
LCNR
θJA = 80°C/ W
EXPOSED PAD (PIN 9) IS GROUND (MUST BE SOLDERED TO PCB)
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