Linear Technology LTM8003 Demo Manual
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Linear Technology LTM8003 Demo Manual

40vin, 3.5a step-down mmodule regulator
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Description

Demonstration circuit 2416A features the
40V, 3.5A step-down μModule
circuit is configured to deliver a 5.0V output from an input
voltage between 6.0V to 40V at a switching frequency
of 2MHz. The wide input range of the LTM8003 allows
a variety of input sources such as automotive batteries
and industrial supplies. Under light load conditions, the
available Burst Mode
with low output ripple.

performance summary

SYMBOL
PARAMETER
V
Input Supply Range
IN
V
Output Voltage
OUT
I
Output Current
OUT
f
Switching Frequency
SW
V
Output Ripple
OUT(AC)
Efficiency
η

BoarD photo

Arrow.com.
Downloaded from
LTM
Regulator. This demo
®
operation supports high efficiency
®
DEMO MANUAL DC2416A
40V
8003, a
The demo board has an EMI filter installed. The EMI per-
®
formance of the board is shown in Figure 3.
The LTM8003 data sheet gives complete description of
the device, operation and application information. The data
sheet must be read in conjunction with this demo manual
prior to working on or modifying demo circuit 2416A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2416A
L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule and Burst Mode are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
Specifications are at T
= 25°C
A
CONDITIONS
V
= 12V
IN
V
= 12V, I
= 3.5A
IN
OUT
V
= 12V, I
= 3.5A
IN
OUT
V
= 12V, I
= 3.5A
IN
OUT
LTM8003
, 3.5A Step-Down
IN
μModule Regulator
MIN
TYP
MAX
6
4.75
5
5.25
3.5
2
20
91.6
UNITS
40
V
V
A
MHz
mV
%
dc2416afa
1

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Summary of Contents for Linear Technology LTM8003

  • Page 1 ® http://www.linear.com/demo/DC2416A with low output ripple. L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. performance summary Specifications are at T = 25°C...
  • Page 2 Quick start proceDure DC2416A is an easy way to evaluate the performance of 4. Check for the proper output voltage between V the LTM8003. Refer to Figure 1 for proper measurement GND (V = 5V). equipment setup and follow the procedure below:...
  • Page 3 DEMO MANUAL DC2416A Quick start proceDure Figure 1. DC2416A Proper Equipment Setup OR V Figure 2. Measuring Input or Output Ripple dc2416afa Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from...
  • Page 4 DEMO MANUAL DC2416A Quick start proceDure –5 –5 CLASS 5 AVG CLASS 5 AVG –10 –10 WITH SS, AV H WITH SS, AV V –15 –15 FREQUENCY (MHz) FREQUENCY (MHz) DC2416A F03a DC2416A F03b (3a) Horizontal Polarization, Average, with Spread Spectrum (3b) Vertical Polarization, Average, with Spread Spectrum –5 –5...
  • Page 5 DEMO MANUAL DC2416A Quick start proceDure (4a) V = 12V (4b) V = 24V Figure 4. DC2416A Thermal Performance (12V = 3.5A, T = 25°C) –20 –40 –60 –80 –100 = 12V = 24V –120 LOAD CURRENT (A) FREQUENCY (MHz) DC2416A F05 DC2416A F06 Figure 5.
  • Page 6 RES., CHIP , 100k, 1/10W, 1% 0603 VISHAY, CRCW0603100KFKEA CHIP BEAD IND., 0805 TDK, MPZ2012S300AT000 RES., CHIP , 24.3k, 1/10W, 1% 0603 VISHAY, CRCW060324K3FKEA IC., BGA, LTM8003, 48PIN LINEAR TECH., LTM8003HY#PBF Additional Demo Board Circuit Components C2, C9 (OPT) CAP ., 0603 R6 (OPT) RES., 0603...
  • Page 7 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.
  • Page 8 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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