Linear Technology LT8610 Demo Manual
  1. Manuals
  2. Brands
  3. Linear Technology Manuals
  4. Controller
  5. LT8610
  6. Demo manual

Linear Technology LT8610 Demo Manual

42v, 2.5a micropower synchronous step-down regulator
Hide thumbs
1
2
3
4
5
6

Advertisement

Table of Contents

Description
Demonstration circuit 1749B is a 42V, 2.5A micropower
synchronous step-down regulator featuring the
The LT8610 is a compact, high efficiency, high speed
synchronous monolithic step-down switching regulator
that consumes only 2.5µA of quiescent current when
output is regulated at 5V. Top and bottom power switches,
compensation components and other necessary circuits
are inside of the LT8610 to minimize external components
and simplify design.
The SYNC pin on the demo board is grounded by default
for low ripple Burst Mode
an external clock, move JP1 to SYNC and apply the external
clock to the SYNC turret. Once JP1 is on SYNC position,
a DC voltage of higher than 2V or INTV
100
95
90
85
80
75
70
65
60
0
Figure 1. LT8610 12V
Switching Frequency
Arrow.com.
Downloaded from
42V, 2.5A Micropower Synchronous
operation. To synchronous to
®
can be applied
CC
0.5
1
1.5
2
2.5
LOAD CURRENT (A)
dc1749b F01
to 5V
Efficiency at 2MHz
IN
OUT
DEMO MANUAL DC1749B
Step-Down Regulator
to the SYNC turret for pulse-skipping operation. Figure 1
LT
8610.
shows the efficiency of the circuit at 12V input.
®
The demo board has an EMI filter installed. The EMI per-
formance of the board is shown on Figure 2. The limit in
Figure 2 is EN55022 class B, average. It shows the circuit
passes the test with a wide margin.
The LT8610 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 demo circuit 1749B.
Design files for this circuit board are available at
http://www.linear.com/demo/DC1749B
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.
10 dB/DIV
80
70
60
50
40
30
20
10
0
–10
START 150kHz
RES BW (CISPR) 9kHz
Figure 2. LT8610 Demo Circuit EMI Performance,
Switching Frequency = 2MHz
LT8610
MKR1 2.003MHz
21.69 dBµV
VBW 62kHz
STOP 30MHz
SWEEP 717ms (6637 PTS)
dc1749b F02
dc1749bfa
1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the LT8610 and is the answer not in the manual?

Questions and answers

Related Manuals for Linear Technology LT8610

Summary of Contents for Linear Technology LT8610

  • Page 1 DC voltage of higher than 2V or INTV can be applied 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.

  • Page 2: Performance Summary

    Demonstration circuit 1749B is easy to set up to evalu- 2. With power off, connect the load V and GND. ate the performance of the LT8610. Refer to Figure 3 and 3. Check JP1 setting Figure 4 for proper measurement equipment setup and 4.
  • Page 3 DEMO MANUAL DC1749B Quick start proceDure DC1749b F04 Figure 4. Measure Output Ripple dc1749bfa Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from...

  • Page 4: Parts List

    RES, CHIP, 1M, 1/16W, 1%, 0402 VISHAY, CRCW04021M00FKED RES, CHIP, 243k, 1/16W, 1%, 0402 VISHAY, CRCW0402243KFKED IC, LT8610EMSE, MSE16 LINEAR TECHNOLOGY CORPORATION, LT8610EMSE Additional Demo Board Circuit Components CAP, ALUM, 22µF, 63V SUN ELECT, 63CE22BS C3, C10 CAP, X7R, 4.7µF, 50V, 10%, 1206 MURATA, GRM31CR71H475KA12L CAP, X7R, 4.7µF, 16V, 10%, 0805...

  • 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.

Table of Contents