LTC3778 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC3778' PDF : 24 Pages View PDF
LTC3778
TYPICAL APPLICATIO
12V/5A at 300kHz
CSS
0.1µF
CC1
2.2nF
RC
20k
R1
10k
R2
190k
100k
CC2
100pF
RON
1.6M
LTC3778
1
20
RUN/SS BOOST
2
VON
3
PGOOD
19
TG
18
SW
4
VRNG
5
ITH
6
FCB
SENSE+ 17
SENSE– 16
15
PGND
7
SGND
14
BG
8
ION
13
DRVCC
9
VFB
12
INTVCC
10
EXTVCC
11
VIN
C2
2200pF
DB
CMDSH-3
CB
0.22µF
CVCC
4.7µF
CF
0.1µF
RF
1Ω
CIN: UNITED CHEMICON THCR70E1H226ZT
COUT: SANYO 16SV220M
D1: DIODES, INC B340A
L1: SUMIDA CDRH127-100
M1, M2: FAIRCHILD FDS6680A
M1
L1
10µH
+
M2
D1
VIN
CIN 14V TO 28V
22µF
50V
VOUT
12V
5A
COUT
220µF
16V
3778 TA01
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Burst Mode and ThinSOT are trademarks of Linear Technology Corporation.
24 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com
COMMENTS
8-Pin MSOP; Synchronizable; Soft-Start; Current Mode
97% Efficiency; No Sense Resistor; 16-Pin SSOP
Minimum Input/Output Capacitors; 3.5V ≤ VIN ≤ 36V;
Power Good Output; Synchronizable 150kHz to 300kHz
Up to 42A Output; 0.925V ≤ VOUT ≤ 2V
Up to 42A Output; VRM 8.4; 1.3V ≤ VOUT ≤ 3.5V
Burst ModeTM Operation; 16-Pin Narrow SSOP;
3.5V ≤ VIN ≤ 36V
Mobile VID; 0.925V ≤ VOUT ≤ 2V; 3.5V ≤ VIN ≤ 36V
Current Mode; 550kHz; Very Small Solution Size
Up to 95% Efficiency, 550kHz, 2.65V ≤ VIN ≤ 8.5V,
0.8V ≤ VOUT ≤ VIN, Synchronizable to 750kHz
GN16-Pin, 0.8V FB Reference
3.5V ≤ VIN ≤ 36V, Power Good Output, 300kHz Operation
Current Mode; 300kHz to 750kHz; Small 16-Pin SSOP,
2.5V ≤ VIN ≤ 9.8V
0.925V ≤ VOUT ≤ 2V; Mobile VIC Code
1.5V ≤ VIN, IOUT ≤ 20A, Generates its own 5V Gate Drive,
Uses Standard N-Channel MOSFETs
G28 Package, VOUT = 0.6V to 1.75V 5-Bit Mobile VID,
Active Voltage Positioning IMVP2, VIN to 36V
VOUT = 0.6V to 1.75V, Active Voltage Positioning IMVP2,
VIN to 36V
3778f
LT/TP 0702 2K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2001
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