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Description
Demonstration circuit 2258A features the
DC/DC Converter with integrated Schottky diode and LDO in
a 2mm × 2mm DFN package. This demo board is designed
to convert a 2.7V to 4.8V input to a 20V output at 10mA
to 25mA with low output ripple and noise. The LT3048
allows for the output to be programmed up to 23V. The
LT3048 is programmed for 1MHz switching frequency.
performance summary
PARAMETER
Input Supply Range
Output Voltage Range
Switching Frequency
Output Ripple
Arrow.com.
Downloaded from
DEMO MANUAL DC2258A
Low Noise Bias Generator
LT
3048, a Boost
The LT3048 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 DC2258A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2258A
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Specifications are at T
CONDITIONS
V
= 2.7V, I
= 10mA
IN
OUT
V
= 4.8V, Load = 25mA
IN
90
80
70
60
50
40
30
20
10
2
4
6
8 10
12
14
16 18
20
OUTPUT CURRENT (mA)
Figure 1. Efficiency Curve
= 25°C
A
MIN
2.7
19.5
0.7
2.7V
IN
4.8V
IN
22
24 26
28
DC2258A F01
LT3048
TYP
MAX
UNITS
4.8
V
20
20.5
V
1
1.3
MHz
1
mV
dc2258af
1
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Related Manuals for Linear Technology DC2258A
Summary of Contents for Linear Technology DC2258A
- Page 1 23V. The http://www.linear.com/demo/DC2258A LT3048 is programmed for 1MHz switching frequency. L, LT, LTC, LTM, Linear Technology and the Linear logo 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...
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Page 2: Quick Start Procedure
DEMO MANUAL DC2258A Quick start proceDure Demonstration circuit 2258A is easy to set up to evalu- 3. Turn on the power at the input. ate the performance of the LT3048. Refer to 0 for proper NOTE. Make sure that the input voltage does not exceed measurement equipment setup and follow the procedure 4.8V. - Page 3 DEMO MANUAL DC2258A Quick start proceDure Figure 3. Output Ripple Measurement Technique 2mV/DIV DC2258A F04 100ns Figure 4. Output Voltage Ripple dc2258af Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from...
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Page 4: Parts List
DEMO MANUAL DC2258A parts List ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components CAP., 4.7µF, X7R, 50V, 10%, 1206 MURATA, GRM31CR71H475KA12L CAP., 4.7µF, X7R, 25V, 10%, 0805 TDK, C2012X7R1E475K125AB CAP., 1000pF, C0G, 25V, 5%, 0603 MURATA, GRM1885C1E102JA01D CAP., 1µF, X7R, 25V, 10%, 0603 TDK, C1608X7R1E105K080AB IND., 22µH, PWR, WE-LQS, 20%... -
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.
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