LT1947EMSE#PBF Linear Technology, LT1947EMSE#PBF Datasheet - Page 8
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LT1947EMSE#PBF
Manufacturer Part Number
LT1947EMSE#PBF
Description
IC REG TFT-LCD ADJ 10-MSOP
Manufacturer
Linear Technology
Datasheet
1.LT1947EMSPBF.pdf
(12 pages)
Specifications of LT1947EMSE#PBF
Applications
Converter, TFT, LCD
Voltage - Input
2.7 ~ 8 V
Number Of Outputs
3
Voltage - Output
Adjustable up to 30V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-MSOP Exposed Pad, 10-HMSOP, 10-eMSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
OPERATIO
LT1947
8
U
V
SS
CERAMIC
33nF
20V/DIV
10V/DIV
10V/DIV
33.2k
C
R
5V/DIV
SS
SS
C1: TAIYO YUDEN LMK316BJ225MD
C2: TAIYO YUDEN LMK325BJ335MD ×2
C3: AVX 0.22µF 25V X7R
C4, C6: TAIYO YUDEN LMK107BJ684MA
2.2µF
AV
V
V
V
V
IN
Figure 3. R
OFF
ON
V
SS
DD
C1
OFF
SS
Figure 4. Start-Up Waveforms
with Soft-Start Circuit Added
L2
4.7µH
D2
C3
220nF
and C
SS
R3
182k
R4
10k
at SHDN Pin Provide Soft-Start
5ms/DIV
SW2
V
FB2
O2
SHDN C
10nF
V
IN
C5
LT1947
D1: MBRM120LT3
D2: CMDSH-3
D3, D4: BAT54S DUAL DIODE
L1: SUMIDA CLQ4D103R3
L2: TAIYO YUDEN LB2012B4R7M
3.3µH
L1
T
D3
SW1
GND
V
FB1
ON
D1
C6
0.68µF
D4
1947 F04.tif
R1
53.6k
R2
10k
1947 F03
C4
0.68µF
CERAMIC
C2
3.3µF
CERAMIC
×2
V
–8V
10mA
AV
8V
200mA
V
24V
10mA
OFF
ON
DD
1947fa