TD1509 Techcode Semiconductor, TD1509 Datasheet - Page 10

• Manufacturer Part Number: TD1509
• Description: 2A 150KHZ PWM Buck DC/DC Converter
• Manufacturer: Techcode Semiconductor

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December, 20, 2005.
2A 150KHZ PWM Buck DC/DC Converter
Voltage
Output
3.3V
12V
5V
9V
Table 4. Typical Application Buck Regulator Design Procedure
Vout
3.3V
12V
5V
9V
Figure 12. Typical Application of TD1509 For ADJ
Table 3. Vout VS. R1, R2, Cf Select Table
15V ~ 18V
12V ~18V
12V ~36V
15V ~36V
6V ~ 18V
8V ~ 18V
6V ~36V
8V ~36V
Voltage
Input
Note:In PCB layout. Reserved an area for CFF
1.6K
3.6K
6.8K
1.5K
R1
Inductor (L1)
47uh
68uh
33uh
47uh
47uh
47uh
47uh
47uh
10
2.7K
11K
43K
13K
R2
Through Hole Electrolytic
Output Capacitor (Cout)
470uf/25V
560uf/25V
330uf/25V
470uf/25V
330uf/25V
470uf/25V
220uf/25V
330uf/25V
Cf (Operational)
Techcode Semiconductor Limited
1.5nf
33nf
10nf
1nf
Datasheet
TD1509