Linear Technology LTM4624EY, Manual

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3
dc1889af
DEMO MANUAL DC1889A
Quick start proceDure
LOAD CURRENT (A)
0
EFFICIENCY (%)
85
90
4
80
75
1
2
3
95
5V
OUT
3.3V
OUT
2.5V
OUT
1.8V
OUT
1.5V
OUT
1.2V
OUT
1V
OUT
LOAD CURRENT (A)
0
EFFICIENCY (%)
85
90
4
80
75
1
2
3
95
3.3V
OUT
2.5V
OUT
1.8V
OUT
1.5V
OUT
1.2V
OUT
1V
OUT
12V
IN
CCM Efficiency vs Load Current 5V
IN
CCM Efficiency vs Load Current
Figure 2. Measured Supply Efficiency at 12V
IN
and 5V
IN
V
OUT
50mV/DIV
I
OUT(STEP)
2A/DIV
V
IN
(V)
12
V
OUT
(V)
1.8
C
OUT
1 × 100µF/6.3V
+
1 × 22µF/6.3V
+
1 × 47µF/6.3V
V
OUT
10mV/DIV
V
IN
(V)
12
V
OUT
(V)
1.8
i
OUT
(A)
4
C
OUT
1 × 100µF/6.3V
+
1 × 22µF/6.3V
+
1 × 47µF/6.3V
Figure 3. Measured Load Transient Response (2A to 4A Load Step) Figure 4. Measured V
OUT
Ripple (20MHz)
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