Advertisement
Quick Links
Description
Demonstration Circuit 1883A features the LTC
efficiency, monolithic synchronous step-down converter
using a current mode architecture capable of supplying
300mA of output current. The IC operates with a fixed
frequency oscillator at 1.2MHz.
The LTC3103 has two user selectable (JP2) operating
modes: Burst Mode
operation (fixed frequency PWM). The IC has internal
compensation and an accurate programmable RUN pin.
The LTC3103 operates with a 2.5V to 15V input voltage
range. The demo board has been designed with a main
output set to 1.8V. Since the LTC3103 is a buck converter,
as V
approaches V
IN
performance summary
PARAMETER
Input Voltage Range
V
OUT
I
OUT
Note 1. The demo board can operate with V
refer to the data sheet for more information.
Arrow.com.
Downloaded from
3103, a high
®
operation and forced continuous
®
, the output will start dropping out
OUT
CONDITIONS
(See Note 1)
(See Note 1)
less than V
, however V
IN
OUT
DEMO MANUAL DC1883A
1.8µA Quiescent Current, 15V,
300mA Synchronous Step-Down
of regulation. Consult the data sheet for information on
the minimum V
regulation range is also a function of the load current.
Typical demo board efficiency is shown in Figures 1 and 2.
The LTC3103 data sheet has detailed information about
the operation, specification and applications of the part.
The data sheet should be read in conjunction with this
Quick Start Guide.
Design files for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, Linear Technology, Burst Mode 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
will drop out of regulation. The regulation range is a function of I
OUT
LTC3103EDD
DC/DC Converter
to V
differential for regulation. The
IN
OUT
TYPICAL VALUE
2.5V to 15V
1.8V
300mA
. Please
OUT
dc1883Af
1
Advertisement
Related Manuals for Linear Technology DC1883A
Summary of Contents for Linear Technology DC1883A
- Page 1 The demo board has been designed with a main L, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks output set to 1.8V. Since the LTC3103 is a buck converter, of Linear Technology Corporation. All other trademarks are the property of their respective owners.
-
Page 2: Quick Start Procedure
(2) To measure no-load input current, remove R4. 100mA LOAD 10mA LOAD 300mA LOAD 1mA LOAD 5mA LOAD dc1883a F01 dc1883a F02 Figure 1. DC1883A Efficiency in PWM Mode Figure 2. DC1883A Efficiency in Burst Mode Operation dc1883Af Arrow.com. Arrow.com. Downloaded from Downloaded from... - Page 3 DEMO MANUAL DC1883A Quick start proceDure Figure 3. Proper Measurement Equipment Setup Figure 4. Measuring Input or Output Ripple dc1883Af Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from...
-
Page 4: Parts List
DEMO MANUAL DC1883A parts List ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components CAP CER, 10µF , 25V, X5R, 1210 TDK, C3225X5R1E106M C2, C4, C6 CAP CER, 1µF , 25V, X5R, 0603 TDK, C1608X5R1E105M CAP CER, 22µF , 10V, X5R, 20%, 1206... -
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.
Need help?
Do you have a question about the DC1883A and is the answer not in the manual?
Questions and answers