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Quick Start Procedure - Linear Technology LT8610A Demo Manual

42v, 3.5a micropower synchronous step-down regulator

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DEMO MANUAL DC2139A

Quick start proceDure

Demonstration circuit 2139A is easy to set up to evaluate
the performance of the LT8610A. Refer to Figure 6 and
Figure 7 for proper measurement equipment setup and
follow the procedure below:
1. With power off, connect the input power supply to V
and GND. When evaluating EMI performance, input
power supply should be connected between VEMI and
GND.
2
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IN
100
95
90
85
80
75
70
65
60
0
1
LOAD CURRENT (A)
Figure 1. LT8610A 12V
IN
Switching Frequency
140
T
= 25°C
A
120
100
80
60
40
20
f
= 2MHz
SW
I
= 2.5A
LOAD
0
8
12
16
20
INPUT VOLTAGE (V)
Figure 2. LT8610A Case Temperature Rise, V
2. With power off, connect the load V
3. Check JP1 setting
4. Turn on the power at the input.
5. Carefully evaluate other design parameters as needed.
2
3
DC2139a F01
to 5V
Efficiency at 2MHz
OUT
f
= 2MHz
SW
I
= 3.5A
LOAD
f
= 1MHz
SW
I
= 3.5A
LOAD
24
28
32
36
DC2139a F02
= 5V, T
= 25°C
OUT
A
and GND.
OUT
dc2139af

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