Datasheet

2
dc1724af
DEMO MANUAL DC1724A
DC1724A provides an easy way to evaluate the performance
of the LTM8029. Refer to Figure 2 for proper measurement
equipment setup and follow the procedure below:
NOTE: When measuring the input or output voltage ripple,
care must be taken to avoid a long ground lead on the
oscilloscope probe. Measure the input or output voltage
ripple by touching the probe tip directly across the V
IN
or
V
OUT
and GND terminals. See Figure 3 for proper scope
probe technique.
1. Place JP1 on the ON position.
2. With power off, connect the input power supply to V
IN
and GND.
3. Turn on the power at the input.
NOTE: Make sure that the input voltage does not exceed
36V.
4. Check for the proper output voltage.
NOTE. If there is no output, temporarily disconnect the
load to make sure that the load is not set too high or
is shorted.
5. Once the proper output voltage is established, adjust
the load within the operating range and observe the
output voltage regulation, ripple voltage, efficiency and
other parameters.
Quick start proceDure
performance summary
(T
A
= 25°C)
PARAMETER CONDITIONS VALUE
Input Voltage Range V
OUT
= 5V 5.6V to 36V
Output Voltage 5V
Maximum Output Current 600mA
Typical Switching Frequency 600kHz
Typical Efficiency V
IN
= 12V, V
OUT
= 5V, I
OUT
= 600mA 85%
Figure 1. DC1724A Output Noise Spectrum
(V
IN
= 12V, V
OUT
= 5V, I
OUT
= 600mA)
FREQUENCY (MHz)
0
INTENSITY (dBm)
0
–20
–60
–100
–40
–80
–120
–140
21 3
DC1724A F01
51.50.5 2.5 43.5 4.5