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Description
Demonstration circuit 1341B features
300kHz SEPIC converter circuit, designed for a 5V at 3A
output from a 4.5V to 36V input voltage range.
The LT3757A operates over an input range of 2.9V to
40V, suitable for applications from single-cell lithium-ion
battery portable electronics up to high voltage automotive
and industrial power supplies. It also exhibits low shut-
down quiescent current of 1µA, making them an ideal fit
for battery-operated systems. Thanks to a novel FBX pin
architecture, the LT3757A can be connected directly to
a divider from either the positive output or the negative
output to ground. It also packs many popular features
performance summary
PARAMETER
Minimum Input Voltage
Maximum Input Voltage
Output Voltage V
OUT
Maximum Output Current
Typical Switching Frequency
Arrow.com.
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DEMO MANUAL DC1341B
LT
3757A
in a
such as soft-start, input undervoltage lockout, adjustable
®
frequency and synchronization in a small 10-lead MSOP
package or a 3mm × 3mm QFN package.
The LT3757A data sheet gives a complete description of
the part, operation and application information. The data
sheet must be read in conjunction with this quick start
guide for DC1341B.
Design files for this circuit board are available at
http://www.linear.com/demo/DC1341B
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog
Devices, Inc. All other trademarks are the property of their respective owners.
300kHz SEPIC Regulator (T
CONDITION
High Efficiency SEPIC
Converter
= 25°C)
A
LT3757A
VALUE
4.5V
36V
5V ±3%
3A
300kHz
dc1341bf
1
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Related Manuals for Analog Devices Linear Technology LT3757A
Summary of Contents for Analog Devices Linear Technology LT3757A
- Page 1 DEMO MANUAL DC1341B LT3757A High Efficiency SEPIC Converter Description Demonstration circuit 1341B features 3757A in a such as soft-start, input undervoltage lockout, adjustable ® 300kHz SEPIC converter circuit, designed for a 5V at 3A frequency and synchronization in a small 10-lead MSOP output from a 4.5V to 36V input voltage range.
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Page 2: Quick Start Procedure
DEMO MANUAL DC1341B Quick start proceDure Demonstration circuit 1341B is easy to set up to evalu- 3. Turn on the power at the input. ate the performance of the LT3757A. Refer to Figure 1 NOTE: Make sure that the input voltage does not exceed for proper measurement equipment setup and follow the the maximum input voltage. - Page 3 DEMO MANUAL DC1341B Quick start proceDure Figure 1. Proper Measurement Equipment Setup Figure 2. Measuring Input or Output Ripple dc1341bf Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from...
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Page 4: Parts List
DEMO MANUAL DC1341B parts List ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components CAP ., X7R, 6.8µF, 50V, 20% 1812 TDK, C4532X7R1H685M C3, C4, C5 CAP ., X5R, 100µF, 6.3V, 20% 1210 Murata, GRM32ER60J107ME20L CAP ., X7S, 10µF, 50V, 20% 1210 TAIYO YUDEN, UMK325BJ106MM-T CAP ., X5R, 4.7µF, 10V, 20% 0805 TAIYO YUDEN, LMK212BJ475MG-T... -
Page 5: Schematic Diagram
DEMO MANUAL DC1341B schematic Diagram dc1341bf Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. Arrow.com. - Page 6 DEMO MANUAL DC1341B DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use.
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