DC1400A Linear Technology, DC1400A Datasheet

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DC1400A

Manufacturer Part Number
DC1400A
Description
BOARD EVAL LTM4608
Manufacturer
Linear Technology
Series
LTM®r
Datasheets

Specifications of DC1400A

Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
1.2V, 1.5V, 1.8V, 2.5V, 3.3V
Current - Output
8A
Voltage - Input
2.5 ~ 5.5 V
Regulator Topology
Buck
Frequency - Switching
1.5MHz
Board Type
Fully Populated
Utilized Ic / Part
LTM4608
Lead Free Status / RoHS Status
Not applicable / Not applicable
Power - Output
-
PARAMETER
Input Voltage Range
Output Voltage Range
Maximum Continuous Output Current
Default Operating Frequency
Effi ciency
DESCRIPTION
Demonstration circuit DC1400A features the LTM
the high effi ciency, high density switch mode step-down
power module. The input voltage range is 2.5V to 5.5V.
The output voltage is jumper selectable from 0.6V to 3.3V.
The rated load current is 8A although derating is necessary
for certain V
offers a novel phase-shift clock output to support current
sharing with other regulators. The TRACK/SS pin allows
the user to program output voltage ramp-up and ramp-
down slew rate. The same pin also allows the output to
PERFORMANCE SUMMARY
BOARD PHOTO
IN
, V
OUT
and thermal conditions. LTM4608A
CONDITION
Jumper Selectable (Open for 0.6V)
Derating is Necessary for Certain V
Thermal Conditions
V
IN
= 5V, V
®
(T
4608AEV,
OUT
A
= 25°C)
= 2.5V, I
OUT
= 8A
coincidentally or ratiometrically track another voltage
rail. The margining function is provided for users who
wish to stress their systems by varying supply voltages
during testing. The LTM4608A data sheet must be read in
conjunction with this demo manual prior to working on
or modifying the DC1400A
Design fi les 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.
DEMO MANUAL DC1400A
IN
, V
OUT
8A Step-Down Power
and
µModule
VALUE
2.5V to 5.5V
1.2V, 1.5V, 1.8V, 2.5V, 3.3V; ±2%
8A DC
1.5MHz
84.5%, See Figure 3 for More Information
LTM4608AEV:
®
Regulator
dc1400af
1

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DC1400A Summary of contents

Page 1

... DESCRIPTION Demonstration circuit DC1400A features the LTM the high effi ciency, high density switch mode step-down power module. The input voltage range is 2.5V to 5.5V. The output voltage is jumper selectable from 0.6V to 3.3V. The rated load current is 8A although derating is necessary for certain and thermal conditions ...

Page 2

... DEMO MANUAL DC1400A QUICK START PROCEDURE Demonstration circuit DC1400A is an easy way to evalu- ate the LTM4608AEV. Please refer to Figure 1 for proper measurement equipment setup and follow the procedure below: 1. Place jumpers in the following positions for a typical 1.2V application: OUT TRACK RUN ...

Page 3

... PULSE SKIPPING 35 CONTINUOUS 30 0.1 1 LOAD CURRENT (A) Figure 3. Measured Supply Effi ciency with Different V I 2A/DIV V OUT(AC) 50mV/DIV Figure 4. Measured Load Transient Response (4A Step, 25% to 75%) DEMO MANUAL DC1400A , 1.2V IN OUT 10 DC1400 F03a , 1.2V Effi ciency vs Load Current with 3.3V IN OUT 10 DC1400 F03c STEP V = 3.3V 50μ ...

Page 4

... DEMO MANUAL DC1400A PARTS LIST ITEM QTY REFERENCE Required Circuit Components 1 1 CFF 2 1 CIN1 3 2 CIN5, CIN4 4 1 C03 5 2 C05, C04 6 1 R14 Additional Demo Board Circuit Components 1 0 C02, CIN3 2 0 CO1 3 0 C14, C21, CTHP , C15 5 0 C17 ...

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. DEMO MANUAL DC1400A dc1400af 5 ...

Page 6

... DEMO MANUAL DC1400A 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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