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Datasheet
2.5A 150KHZ PWM Buck DC/DC Converter
TD1507
October, 20, 2005.
Techcode Semiconductor Limited
8
Typical Application Circuit
Vout
R1
R2
Cf (Operational)
3.3V
1.6K
2.7K
33nf
5V
3.6K
11K
10nf
9V
6.8K
43K
1.5nf
12V
1.5K
13K
1nf
Output Capacitor (Cout)
Output
Voltage
Input
Voltage
Inductor (L1)
Through Hole Electrolytic
6V ~ 18V
47uh
470uf/25V
3.3V
6V ~36V
68uh
560uf/25V
8V ~ 18V
33uh
330uf/25V
5V
8V ~36V
47uh
470uf/25V
12V ~18V
47uh
330uf/25V
9V
12V ~36V
47uh
470uf/25V
15V ~ 18V
47uh
220uf/25V
12V
15V ~36V
47uh
330uf/25V
Figure 11. Typical Application of TD1507
Table 1. Vout VS. R1, R2, Cf Select Table
Table 2. Typical Application Buck Regulator Design Procedure