Datasheet

LTC1871-1
36
18711fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2007
LT 0108 REV B • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
High Power SLIC Supply with Undervoltage Lockout
(Also See the LTC3704 Data Sheet)
+
RUN
I
TH
FB
FREQ
MODE/SYNC
SENSE
V
IN
INTV
CC
GATE
GND
LTC1871-1
R
T
120k
f = 200kHz
*COILTRONICS VP5-0155
(PRIMARY = 3 WINDINGS IN PARALLEL)
C1
4.7µF
X5R
+
C
IN
220µF
16V
TPS
C3
10µF
25V
X5R
IRL2910
R
S
0.012Ω
C8
0.1µF
D3
10BQ060
5
•
•
V
IN
7V TO 12V
T1*
1, 2, 3
R
C
82k
C
C1
1nF
C
C2
100pF
C
R
1nF
R1
49.9k
1%
R2
150k
1%
D4
10BQ060
6
•
D2
10BQ060
4
•
C4
10µF
25V
X5R
C
OUT
3.3µF
100V
GND
V
OUT1
–24V
200mA
V
OUT2
–72V
200mA
C5
10µF
25V
X5R
4
3
18711 TA06
2
6
1
10k
R
F1
10k
1%
R
F2
196k
1%
C2
4.7µF
50V
X5R
–
+
LT1783
PART NUMBER DESCRIPTION COMMENTS
LT
®
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LTC1624 Current Mode DC/DC Controller SO-8; 300kHz Operating Frequency; Buck, Boost, SEPIC Design;
V
IN
Up to 36V
LTC1700 No R
SENSE
Synchronous Step-Up Controller Up to 95% Effi ciency, Operation as Low as 0.9V Input
LTC1871 Wide Input Range Controller No R
SENSE
, 5V Gate Drive, Current Mode Control
LTC1871-7 Wide Input Range Controller No R
SENSE
, 7V Gate Drive, Current Mode Control
LTC1872 SOT-23 Boost Controller Delivers Up to 5A, 550kHz Fixed Frequency, Current Mode
LT1930 1.2MHz, SOT-23 Boost Converter Up to 34V Output, 2.6V ≤ V
IN
≤ 16V, Miniature Design
LT1931 Inverting 1.2MHz, SOT-23 Converter Positive-to-Negative DC/DC Conversion, Miniature Design
LTC3401/LTC3402 1A/2A 3MHz Synchronous Boost Converters Up to 97% Effi ciency, Very Small Solution, 0.5V ≤ V
IN
≤ 5V
LTC3704 Positive-to-Negative DC/DC Controller No R
SENSE
, Current Mode Control, 50kHz to 1MHz
LT3782 2-Phase Step-Up DC/DC Controller 6V ≤ V
IN
≤ 40V; 4A Gate Drive, 150kHz to 500kHz