LTC3873-5
16
38735fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2007
LT 0908 REV B • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT
®
1619 Current Mode PWM Controller 300kHz Fixed Frequency, Boost, SEPIC, Flyback Topology
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, Operating as Low as 0.9V Input
LTC1871-7 Wide Input Range Controller No R
SENSE
, 7V Gate Drive, Current Mode Control
LTC1872/LTC1872B SOT-23 Boost Controller Delievers 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
LTC1871/LTC1871-7 No R
SENSE
, Wide Input Range DC/DC Boost Controller No R
SENSE
, Current Mode Control, 2.5V ≤ V
IN
≤ 36V
LTC3703/LTC3703-5 100V Synchronous Controller Step-Up or Step Down, 600kHz, SSOP-16, SSOP-28
LTC3803/LTC3803-5 200kHz Flyback DC/DC Controller V
IN
and V
OUT
Limited Only by External Components
LTC3805 Adjustable Frequency Flyback Controller V
IN
and V
OUT
Limited Only by External Components
LT3825 Isolated No-Opto Synchronous Flyback Controller V
IN
: 24V to 75V, Up to 80W, Current Mode Control
LT3837 Isolated No-Opto Synchronous Flyback Controller V
IN
: 4.5V to 20V, Up to 60W, Current Mode Control
LTC3873 No R
SENSE
Constant Frequency Boost/Flyback/SEPIC
Controller
V
IN
and V
OUT
Limited Only by External Components, 200kHz Frequency,
ThinSOT or DFN Package
TYPICAL APPLICATION
5V Output Nonisolated Telecom Housekeeping Power Supply
V
CC
I
TH
NGATE
LTC3873-5
RUN/SS
GND
0.1µF
300µF
6.3V
X5R
s3
V
OUT
5V
2A MAX
2.2nF
10µF
5.1V
4.7µF
100V
X5R
56k
221k
D1
T1
UPS840
V
IN
36V TO 72V
68m
38735 TA03
D1: MBR0540T1
T1: COOPER CTX02-15242
FDC2512
•
•
SW
IPRG
V
FB
12k 36k
