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DESCRIPTION
Demo circuit DC1723A features the
(micromodule) step-down converter that can deliver up to
2A of output current. DC1723A is designed for a 5V, 2A
output from a 7.5V to 58V input at 400kHz. The wide input
range of the LTM8050 allows a variety of input sources
such as automotive batteries and industrial supplies. At
light loads, the LTM8050 enters Burst Mode
to maintain high efficiency and low output ripple over a
broad current range. The user adjustable features of the
LTM8050 such as output voltage, switching frequency,
soft-start, and power good can be changed on DC1723A
PERFORMANCE SUMMARY
PARAMETER
Minimum Input Voltage, V
IN
Maximum Input Voltage, V
IN
Output Voltage, V
OUT
Maximum Output Current
Switching Frequency
Efficiency
BOARD PHOTO
LTM
8050, a μModule
®
®
operation
®
Specifications are at T
CONDITIONS
V
= 5V
OUT
V
= 5V
OUT
R4 = 93.1k
R6 = 97.6k
V
= 12V, I
= 2A
IN
OUT
DEMO MANUAL DC1723A
58V
, 2A Step-Down
IN
µModule Regulator
simply by modifying or installing the appropriate resistors
and/or capacitors.
The LTM8050 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 the demo circuit 1723A.
Design files for this circuit board are available at
http://www.linear.com/demo
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.
= 25°C
A
LTM8050
MIN
TYP
MAX
UNITS
7.5
58
4.87
5.02
5.17
2
400
kHz
85
dc1723af
1
V
V
V
A
%
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Related Manuals for Linear Technology DC1723A
Summary of Contents for Linear Technology DC1723A
- Page 1 The user adjustable features of the LTM8050 such as output voltage, switching frequency, 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 soft-start, and power good can be changed on DC1723A respective owners.
- Page 2 DEMO MANUAL DC1723A QUICK START PROCEDURE Note: Make sure that the input voltage does not exceed 58V. Demonstration circuit 1723A is easy to set up to evalu- ate the performance of the LTM8050. Refer to Figure 1 4. Check for the proper output voltage.
-
Page 3: Quick Start Procedure
DC1723A F02 Figure 2. Measuring Input or Output Ripple –20 –40 –60 –80 –100 –120 –140 1 1.5 4.5 5 FREQUENCY (MHz) DC1723A F03 Figure 3. DC1723A Output Noise Spectrum (V = 12V, V = 5V, I = 2A) dc1723af... -
Page 4: Parts List
DEMO MANUAL DC1723A PARTS LIST ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components C2, C9 CAP., X7R, 2.2µF, 100V, 10%, 1206 MURATA, GRM31CR72A225KA73 CAP., X5R, 100µF, 6.3V, 20%, 1210 MURATA, GRM32ER60J107ME20L CAP., X7R, 0.1µF, 10V, 10%, 0603 AVX, 0603ZC104KAT2A RES., CHIP, 0Ω, 1/10W, 0603... -
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 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.
- Page 7 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Analog Devices Inc. DC1723A...
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