Linear Technology DC1934A, Демонстрационное руководство

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dc1934af
DEMO MANUAL DC1934A
Figure 1. LTM8053 Demo Circuit DC1934A Efficiency
vs Load Current (f
SW
= 1MHz, V
OUT
= 5V, Burst
Mode Operation)
PERFORMANCE SUMMARY
Specifications are at T
A
= 25°C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
* Input Supply Range 5.6 40 V
V
OUT
Output Voltage 4.85 5 5.15 V
I
OUT
** Maximum Output Current 3.5 A
f
SW
Switching Frequency V
IN
= 12V, I
OUT
= 3.5A 1 MHz
EFE Efficiency at DC V
IN
= 12V, I
OUT
= 2A 93.5 %
*When V
IN
voltage is low, the LTM8053 may skip switching cycles.
**Derating is necessary for certain V
IN
and thermal conditions.
Figure 2. LTM8053 Demo Circuit DC1934A Maximum
Load Current Derating
V
IN
= 12V
V
IN
= 24V
LOAD CURRENT (A)
0.001 0.01 0.1 1 10
55
65
75
85
95
EFFICIENCY (%)
DC1934A F01
0 LFM
12V
IN
24V
IN
36V
IN
AMBIENT TEMPERATURE (°C)
0 25 50 75 100 125
0
1
2
3
4
5
6
MAXIMUM LOAD CURRENT (A)
DC1934A F02