The XL1509 is a 150 KHzfixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 2A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number of external components, the regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator.

Features:

1. Wide 4.5V to 40V Input Voltage Range

2. 3.3V,5V,12V, and adjustable versions

3. Output Adjustable from 1.23V to 37V

4.„  Maximum Duty Cycle 100%

5. Minimum Drop Out 1.5V

6. Fixed 150KHz Switching Frequency

7. 2A Constant Output Current Capability

8. Internal Optimize Power Transistor

9. High efficiency

10. Excellent line and load regulation

11. TTL shutdown capability

Applications

1. LCD Monitor and LCD TV
2. Digital Photo Frame
3. Set-up Box
4. ADSL Modem
5. Telecom / Networking Equipment