onsemi NCP1509
The NCP1509 step−down PWM DC−DC converter is optimized for portable applications powered from 1−cell Li−ion or 3 cell Alkaline/NiCd/NiMH batteries. This DC−DC converter utilizes a current−mode control architecture for easy compensation and better line regulation. It also uses synchronous rectification to increase efficiency and reduce external part count.| Part No. | NCP1509 |
|---|---|
| Datasheet | NCP1509 Download |
| Manufacturer |  onsemi |
| Description | High Efficiency Synchronous Step-Down DC-DC Converter |
| Buy | Stock & Price |
FEATURES
● High Efficiency: 92.5% for 1.8 V Output at 3.6 V Input and 125 mA Load Current 91% for 1.8 V Output at 3.6 V Input and 300 mA Load Current● Digital Programmable Output Voltages: 1.05, 1.35, 1.57 or 1.8 V
● Output Current up to 500 mA at Vin = 3.6 V
● Low Quiescent Current of 14 mA in Pulsed Switching Mode
● Low 0.2 mA Shutdown Current
● −30°C to 85°C Operation Temperature
● Low Profile DFN Package
● Pb−Free Package is Available Application
● Cellular Phones, Smart Phones and PDAs
● Digital Still Cameras
● MP3 Players and Portable Audio Systems
● Wireless and DSL Modems
● Portable Equipment 100 90 80 Vin 2.7 V − 5.2 V 5 VCC Cin 4 VCCP 10 mH 9 SHD 10 SYNC LX FB CB1 CB0 3 6.8 mH 6 Vout Cout 22 mH 8 7 CB0 and CB1 Control Input EFFICIENCY (%) 70 60 50 40 30 20 GNDA GNDP 10 0 0.001 Figure 1. Typical Application Circuit MARKING DIAGRAM 1 10 PIN DFN 1509 MN SUFFIX ALYW 1 CASE 485C 1509 = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week ORDERING INFORM...
