TD1509芯片规格书.pdfVIP

Datasheet 2A 150KHZ PWM Buck DC/DC Converter TD1509 General Description Features The TD1509 is a of easy to use adjustable • 3,3V,5V and Adjustable output versions step-down (buck) switch-mode voltage regulator. • Output adjustable from 1.23v to 43V The device is available in an adjustable output • Fixed 150KHz frequency internal oscillator version. It is capable of driving a 2A load with • Guaranteed 2A output load current excellent line and load regulation. • Input voltage range up to 45V • Low power standby mode, IQ typically 50 µA Requiring a minimum number of external • TTL shutdown capability components, these regulators are simple to use • Excellent line and load regulation and include internal frequency compensation, and • High efficiency a fixed-frequency oscillator. • Thermal shutdown and current limit protection • Available in advantaged SOP8 DIP8 package The output voltage is guaranteed to ±3% tolerance under specified input voltage and Applications output load conditions. The oscillator frequency is guaranteed to ±15%. External shutdown is included, featuring typically 50 µA standby current. • Simple High-efficiency step-down regulator Self protection features include a two stage • On-card switching regulators frequency reducing current limit for the output • Positive to negative converter • LCD