LT1935 Ver la hoja de datos (PDF) - Linear Integrated System
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LT1935 Datasheet PDF : 8 Pages
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LT1935
TYPICAL APPLICATIO S
VIN
2.3V TO 4.8V
5V Boost Converter
L1
1.8µH
D1
C1
4.7µF
ON OFF
VIN
SW
LT1935
SHDN
FB
GND
R1
29.4k
R2
10k
C1, C2: X5R OR X7R 6.3V
D1: ON SEMI MBRM120
L1: SUMIDA CR43-1R8
C3
150pF
VOUT
5V
1A, VIN = 3.3V
0.6A, VIN = 2.5V
C2
20µF
1935 TA01
3.3V to 12V Boost Converter
L1
VIN
4.2µH
D1
3.3V
C1
4.7µF
ON OFF
VIN
SW
LT1935
SHDN
FB
GND
47pF
R1
84.5k
R2
10k
Efficiency, VOUT = 5V
90
85
VIN = 3.3V
80
VIN = 2.5V
75
70
65
60
55
50
0 200 400 600 800 1000 1200
LOAD CURRENT (mA)
VOUT
12V
320mA
C2
22µF
D1: ON SEMI MBRM120
L1: SUMIDA CDRH5D28-4R2
1935 TA02
PACKAGE DESCRIPTIO
S5 Package
5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635)
0.62
0.95
MAX
REF
1.22 REF
2.90 BSC
(NOTE 4)
3.85 MAX 2.62 REF
1.4 MIN
2.80 BSC
1.50 – 1.75
(NOTE 4)
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.20 BSC
DATUM ‘A’
PIN ONE
0.95 BSC
0.80 – 0.90
1.00 MAX
0.30 – 0.50 REF
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
0.09 – 0.20
1.90 BSC
(NOTE 3)
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
0.30 – 0.45 TYP
5 PLCS (NOTE 3)
0.01 – 0.10
S5 TSOT-23 0302
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
1935f
7
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