onsemi NCP1530
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 high efficiency. The switching frequency can also be synchronized to external clock between 600 kHz and 1.2 MHz.| Part No. | NCP1530 |
|---|---|
| Datasheet | NCP1530 Download |
| Manufacturer |  onsemi |
| Description | 600mA PWM/PFM Step-Down Converter |
| Buy | Stock & Price |
FEATURES
● Pb−Free Package is Available● High Conversion Efficiency, up to 92% at VIN = 4.3 V, VOUT = 3.3 V, IOUT = 300 mA
● Current−Mode PWM Control
● Automatic PWM/PFM Mode for Current Saving at Low Output Loads
● Internal Switching Transistor Support 600 mA Output Current (VIN = 5.0 V, VOUT = 3.3 V)
● High Switching Frequency (600 kHz), Support Small Size Inductor and Capacitor, Ceramic Capacitors Can be Used
● 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
● Built−In Input Undervoltage Lockout
● Built−In Output Overvoltage Protection
● Power Saving Shutdown Mode
● Space Saving, Low Profile Micro8 Package Typical
APPLICATIONS
● PDAs● Digital Still Camera
● Cellular Phone and Radios
● Portable Test Equipment
● Portable Scanners
● Portable Audio Systems 8 1 MARKING DIAGRAM Micro8] DM SUFFIX CASE 846A xxxx ALYW xxx...
