NCP1596 Overview
NCP1596, NCP1596A Product Preview 1.5 A, 1.5 MHz Current Mode PWM Buck Down Converter The NCP1596/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 ponents 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 pact 3x3 DFN package. Typical Applications • Hard Disk Drives • USB Power Device • Wireless and DSL Modems http://onsemi. 1 G N1596/1596A = Specific Device Code A = Assembly Location L = Wafer Lot Y...
NCP1596 Key Features
- High Efficiency up to 90%, 1 A @ 3.3 V, 75% @ 1.2 V
- Fully Internal pensation
- 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