l6730cqtr STMicroelectronics, l6730cqtr Datasheet - Page 42

• Manufacturer Part Number: l6730cqtr
• Description: Adjustable Step-down Controller With Synchronous Rectification
• Manufacturer: STMicroelectronics

Efficiency
9
Figure 36. Demoboard efficiency 400KHz
Figure 37. Demoboard efficiency 645KHz
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Efficiency
The following figures show the demoboard efficiency versus load current for different values of
input voltage and switching frequency:
95.00%
90.00%
85.00%
80.00%
75.00%
95.00%
90.00%
85.00%
80.00%
75.00%
70.00%
1
1
V
V
V
IN = 5V
IN = 5V
IN = 5V
V
IN = 5V
V
IN = 12V
V
3
3
IN = 12V
Fsw=400KHz
Fsw=645KHz
5
5
7
7
Iout (A)
Iout (A)
9
9
11
11
V
O
13
13
= 3.3V
V
O
= 3.3V
L6730C - L6730D
15
15