LT1947 データシートの表示（PDF） - Linear Technology
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LT1947 Datasheet PDF : 12 Pages
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LT1947
ABSOLUTE AXI U RATI GS
(Note 1)
VIN Voltage ................................................................ 8V
CT Voltage.................................................................. 6V
SW1, SW2 Voltage .................................................. 36V
VON, VO2 Voltage ..................................................... 30V
FB1, FB2 .................................................................... 3V
SHDN......................................................................... 8V
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
FB1 1
10 VON
FB2 2
9 V02
CT 3
11
8 SHDN
SW1 4
7 SW2
GND 5
6 VIN
MSE PACKAGE
10-LEAD PLASTIC MSOP
EXPOSED PAD (PIN 11) IS GND
MUST BE SOLDERED TO PCB
TJMAX = 125°C, θJA = 40°C/W
ORDER PART
NUMBER
LT1947EMSE
MSE PART MARKING
LTBQW
TOP VIEW
FB1 1
FB2 2
CT 3
SW1 4
GND 5
10 VON
9 VO2
8 SHDN
7 SW2
6 VIN
MS PACKAGE
10-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 120°C/W
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/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ORDER PART
NUMBER
LT1947EMS
MS PART MARKING
LTUE
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 3.3V, VSHDN = 3.3V unless otherwise specified.
SYMBOL
Input Voltage Range
Supply Current
FB1 Voltage
FB2 Voltage
Reference Line Regulation
CONDITIONS
SHDN = 2.4V
SHDN = 0V
VIN = 2.7V to 8V
MIN TYP MAX UNITS
2.7
8
V
9.5 12.5
mA
1
µA
1.240 1.26 1.280
V
● 1.225
1.295
V
1.225 1.26 1.295
V
● 1.210
1.310
V
0.01 0.05
%/V
1947fa
2
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