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DESCRIPTION
Demonstration circuit DC1041A-B features the
LTM
®
4601HVEV, a 12A high efficiency, high density
switch mode step-down converter. The input voltage
range is from 4.5V to 28V. The output voltage is jumper
selectable for popular voltages from 0.6V to 5V. The PLLIN
pin supports synchronizing the μModule
an external clock. The TRACK/SS pin allows the user to
program output ramp-up and ramp-down rates which
may coincidentally or ratiometrically track with another
PERFORMANCE SUMMARY
PARAMETER
Input Voltage Range
Output Voltage V
OUT
Maximum Continuous Output Current
Default Operating Frequency
External Synchronous Clock Frequency Range
Efficiency
BOARD PHOTO
DEMO MANUAL DC1041A-B
supply's output if desired. Output voltage margining of
±5% from the nominal value is available via the margin
control pins MARG0 and MARG1. The LTM4601HV data
sheet must be read in conjunction with this demo manual
prior to working on or modifying demo circuit DC1041A-B.
®
regulator to
Design files for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, μModule, Linear Technology 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
Jumper Selectable (Open for 0.6V)
Derating is Necessary for Certain V
Thermal Conditions
Refer to Data Sheet for Details
V
= 12V, V
= 1.5V, I
= 12A
IN
OUT
OUT
5V
12A Step-Down
µModule Regulator
VALUE
4.5V to 28V
1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V
, V
and
12A DC
IN
OUT
800kHz
560kHz to 1000kHz
83%, See Figure 2
LTM4601HV
to 28V
,
IN
IN
dc1041a-bf
1
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Summary of Contents for Linear Technology DC1041A-B
- Page 1 L, LT, LTC, LTM, μModule, Linear Technology and the Linear logo are registered trademarks of may coincidentally or ratiometrically track with another Linear Technology Corporation. All other trademarks are the property of their respective owners.
- Page 2 DEMO MANUAL DC1041A-B QUICK START PROCEDURE Demonstration circuit DC1041A-B is an easy way to evalu- 5. For optional load transient test, apply an adjustable ate the performance of the LTM4601. Please refer to pulse signal between IOSTEP (E3) and GND pins.
- Page 3 DEMO MANUAL DC1041A-B QUICK START PROCEDURE Figure 2. Measured Supply Efficiency with Different V and V = 12V = 1.5V 0A TO 10A LOAD STEP = 1 × 22μF CERAMIC, 2 × 100μF CERAMIC, C5 = 47pF Figure 3. Measured Load Transient Response (0A to 10A Step)
- Page 4 DEMO MANUAL DC1041A-B PARTS LIST ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components CIN1 Cap., Alum 150μF 35V 20% Sanyo 35ME150WXV (now SUNCON 35ME150WXV) CIN2, CIN3 Cap., X7R 10μF 35V 20% Taiyo Yuden GMK316BJ106ML-T COUT1, COUT2 Cap., X5R 100μF 6.3V 20%...
- Page 5 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 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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