NCP1530 Description
NCP1530 600 mA PWM/PFM Step−Down Converter with External Synchronization Pin The NCP1530 is a PWM/PFM non−synchronous step−down (Buck) DC−DC converter for usage in systems supplied from 1−cell Li−ion, or 2 or more cells Alkaline/NiCd/NiMH batteries. It can operate in Constant−Frequency PWM mode or PWM/PFM mode in which the controller will automatically switch to PFM mode operation at low output loads to maintain...
NCP1530 Key Features
- Pb-Free Package is Available
- High Conversion Efficiency, up to 92% at VIN = 4.3 V
- Current-Mode PWM Control
- Automatic PWM/PFM Mode for Current Saving at Low Output Loads
- Internal Switching Transistor Support 600 mA Output Current
- High Switching Frequency (600 kHz), Support Small Size Inductor
- Synchronize to External Clock Signal up to 1.2 MHz
- 100% Duty Cycle for Maximum Utilization of the Supply Source
- Programmable Soft-Start Time through External Chip Capacitor
- Externally Accessible Voltage Reference