NCP1596A

NCP1596A 1.5 A, 1.5 MHz Current Mode PWM Buck Down Converter The NCP1596A is a current mode PWM buck converter with integrated power switch. It can provide up to 1.5 A output current with high conversion efficiency. High frequency PWM control scheme can provide a low output ripple noise. Thus, it allows the usage of small size passive components to reduce the board space. In a low load condition, the controller will automatically change to PFM mode which provides a higher efficiency at low load. Additionally, the device includes soft−start, thermal shutdown with hysteresis, cycle−by−cycle current limit, and short circuit protection. This device is available in a compact 3x3 DFN package. Features High Efficiency up to 90%, 1 A @ 3.3 V, 75% @ 1.2 V Fully Internal Compensation Low Output Voltage Ripple, 20 mV Typical ±1.5% Reference Voltage High PWM Switching Frequency, 1.5 MHz Automatic PWM / PFM Switchover at Light Load Built−in 1 ms Digital Soft Start Cycle−by−cycle Current Limit Thermal Shutdown with Hysteresis Internal UVLO Protection Ext. Adjustable Output Voltage Low Profile and Minimum External Components Designed for use with Ceramic Capacitor Compact 3x3 DFN Package These are Pb−Free Devices Typical Applications Hard Disk Drives USB Power Device Wireless and DSL Modems http://onsemi.com 1 6 PIN DFN 3x3 MN SUFFIX CASE 506AH MARKING DIAGRAM 1 1596A ALYW G 1596A = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W =...