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DESCRIPTION
Demonstration circuit 1195 features the LTM
step-down regulator preconfigured to deliver 3.3V at up
to 2A from a 5V to 36V input supply. The LTM8023 is a
step-down converter, so minimum amount of headroom
is required to keep the output in regulation. In addition,
the input voltage required to turn on is higher than that
required to run (see Minimum Input Voltage section in the
data sheet for detail). The optional Burst Mode
of LTM8023 supports high efficiency and low output ripple
at light load conditions.
PERFORMANCE SUMMARY
PARAMETER
Input Voltage Range
Output Voltage V
OUT
Maximum Output Current
Typical Switching Frequency
Note 1: The circuit requires more than 5V to run at full load. See Figure 1 and the data sheet for detail.
BOARD PHOTO
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DEMO MANUAL DC1195A
8023, a
The LTM8023 data sheet gives a complete description of the
®
part, operation and application information. The LTM8023
data sheet must be read in conjunction with this manual
to operate or modify demo circuit 1195.
Design files for this circuit board are available at
http://www.linear.com/demo
operation
®
L, LT, LTC, LTM, Linear Technology, Burst Mode, µModule and the Linear logo are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
(T
= 25°C)
A
CONDITION
LTM8023 36V, 2A DC/DC
µModule
VALUE
5V (Note 1) to 36V
3.3V
2A
600kHz
Regulator
®
dc1195af
1
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Summary of Contents for Linear Technology mModule LTM8023
- Page 1 The optional Burst Mode operation ® L, LT, LTC, LTM, Linear Technology, Burst Mode, µModule and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their of LTM8023 supports high efficiency and low output ripple respective owners.
-
Page 2: Quick Start Procedure
DEMO MANUAL DC1195A QUICK START PROCEDURE Demonstration circuit 1195 is a simple way to evaluate 3. Turn on the power at the input. The output voltage the performance of the LTM8023. Refer to Figure 2 and should rise to 3.3V. Figure 3 for proper measurement equipment setup and 4. - Page 3 DEMO MANUAL DC1195A QUICK START PROCEDURE Figure 2. Proper Measurement Equipment Setup = 3.3V 0.01 Figure 3. Measuring Input or Output Ripple OUTPUT CURRENT (A) 1195 F04 Figure 4. Efficiency dc1195af Downloaded from Elcodis.com electronic components distributor...
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Page 4: Parts List
Res, 56.2k 1% 1/16W, 0402 Vishay CRCW040256K2FKED R4, R3 Res, 100k 1% 1/16W, 0402 Vishay CRCW0402100KFKED Res, 10k 5% 1/16W, 0402 Vishay CRCW040210K0JNED IC, Module Linear Technology LTM8023EV Standoff, Snap On Keystone 8831 XJP1 Shunt, 2mm Samtec 2SN-BK-G dc1195af Downloaded from Elcodis.com... -
Page 5: Schematic Diagram
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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. - Page 6 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. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods.
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