LTC1709 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC1709
Linear Technology
'LTC1709' PDF : 28 Pages View PDF
LTC1709
TYPICAL APPLICATIO
0.1µF
INTVCC
100pF
47k 3.3nF
15k
1000pF
10k
51k 2.7k
LTC1709
1
2
3
4
RUN/SS
SENSE 1+
SENSE 1–
5 EAIN
6 PLLFLTR
7 PLLIN
NC
8
9 ITH
10 SGND
11
12
13
14
VDIFFOUT
VOS–
VOS+
SENSE 2–
SENSE 2+
36
NC 35
TG1 34
SW1 33
BOOST 1 32
VIN 31
BG1 30
EXTVCC 29
INTVCC 28
PGND 27
BG2 26
BOOST 2 25
SW2
24
TG2 23
AMPMD
1000pF
470pF
15
16 ATTENOUT
17 ATTENIN
18 VID0
VID1
22
VBIAS 21
VID4 20
VID3 19
VID2
0.22µF
D3
1µF,25V
D4
10Ω
0.22µF
0.1µF
M1
10Ω
0.1µF
4.7µF
6.3V
L1
1.5µH
0.004Ω
M2
47µF×2
35V
D1
MBRM
140T3
COUT
GND
M3
L2
1.5µH
M4
0.004Ω
D2
MBRM
140T3
4×180µF
4V
VIN
5V TO 28V
VOUT
1.3V TO 3.5V
VID INPUTS
SWITCHING FREQUENCY = 310kHz
MI – M4: FAIRCHILD FDS7760A
L1 – L2: SUMIDA CEP125-1R5M
COUT OUTPUT CAPACITORS: PANASONIC EEFUE0G181R
D3, D4: CENTRAL CMDSH-3TR
Figure 12. 5V Input, 1.8V/20A Power Supply with Active Voltage Positioning
1709 TA02
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Adaptive Power and Burst Mode are trademarks of Linear Technology Corporation.
1.3V ≤ VOUT ≤ 3.5V (LTC1709-8),
1.1V ≤ VOUT ≤ 1.85V (LTC1709-9),
Current Mode Ensures Accurate Current Sharing,
3.5V ≤ VIN ≤ 36V
1.3V ≤ VOUT ≤ 3.5V, Current Mode Ensures
Accurate Current Sharing, 3.5V ≤ VIN ≤ 36V
Burst ModeTM Operation, 16-Pin Narrow SSOP,
Fault Protection, 3.5V ≤ VIN ≤ 36V
Output Fault Protection, Power Good, GN-24,
3.5V ≤ VIN ≤ 36V, 0.925V ≤ VOUT ≤ 2V
28 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX: (408) 434-0507 qwww.linear-tech.com
1709f LT/TP 0500 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1999
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