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DC1737A

Description
eval board inverting reg ltc3863
CategoryDevelopment board/suite/development tools   
File Size490KB,6 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance  
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eval board inverting reg ltc3863

DEMO MANUAL DC1737A
LTC3863
Low I
Q
Inverting
DC/DC Converter
DESCRIPTION
Demonstration circuit 1737A is a current-mode inverting
DC/DC converter featuring the
LTC
®
3863.
The board operates from an input range of 4.5V to 16V,
and provides a –5.2V, 1.7A output or a –12V, 1A output
(jumper selectable). It operates at 400kHz and may be
synchronized to an external clock. A soft-start feature
controls output voltage slew rate at start-up, reducing
current surge and voltage overshoot. Burst Mode
®
opera-
tion that improves efficiency at light loads can be enabled
with a jumper. A power good output signal is provided.
The demonstration board has options for larger MOSFET
and diode packages on the back of the board for higher
output current requirements.
This board is suitable for a wide range of automotive,
telecom, industrial, and other applications. The LTC3863
is available in small 12-pin thermally enhanced MSOP and
DFN Packages. For other output requirements, see the
LTC3863 data sheet or contact the LTC factory.
Design files for this circuit board are available at
http://www.linear.com/demo
L,
LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
PERFORMANCE SUMMARY
SYMBOL
V
IN
V
OUT
I
OUT
f
SW
V
OUT P-P
V
REG
P
OUT
/P
IN
PARAMETER
Input Supply Range
Output Voltage
Output Current Range, Continuous
Switching (Clock) Frequency
Output Ripple
Output Regulation
Efficiency (See Figure 3)
Approximate Size
Free Air
Specifications are at T
A
= 25°C
MIN
4.5
–5.2V/–12V
0
400
30
±0.1
89.3
0.9
×
0.8
×
0.18
–1.7/1.0
TYP
MAX
16
UNITS
V
V
A
kHz
mV
P-P
%
%
Inches
CONDITIONS
V
IN
= 12V, V
OUT
= –12V, I
OUT
= 1A (20MHz BW)
Line and Load (4.5V
IN
to 16V
IN
, –12V
OUT
, 0A to 1A Out)
V
IN
= 12V, V
OUT
= –12V, I
OUT
= 1A
Component Area
×
Top Component Height
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