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Converters | NCP1521B
概览
NCP1521B 步降 PWM DC-DC 转换器用于使用一个锂电池或三个碱性/镍镉/镍氢电池供电的便携式应用。该零部件提供可调输出电压版本，电压范围为 0.9 V 至 3.3 V。它使用同步整流来提高能效和减少外部零部件数量。该器件还具有内置的 1.5 MHz（标称）振荡器，允许使用较小的感应器和电容器，从而减小组件尺寸。自动开关 PWM/PFM 模式提高了系统能效。其他功能包括集成的软启动、逐周期电流限制和高温关断保护等。NCP1521B 采用节省空间的薄型 TSOP5 和 UDFN6 封装。
- Power supply for application processor
- Power supply for processor with low core voltage
- Cellular phones, smart phones, and PDAs
- MP3 players and portable audio systems
- Digital still cameras and video cameras
- 96% efficiency, 30 uA quiescent current, 0.3 uA shutdown current
- 1.5 MHz switching frequency
- Auto-switching between PWM and PFM mode at light load conditions
- Adjustable output voltage from 0.9V to 3.3V
- Best in class Low Ripple even in PFM mode
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Lifetime
Pb
A
H
P
TSOP-5 / SOT-23-5
1
260
REEL
3000
N
Step-Down
Current Mode
2.7
5.5
0.9 to 3.3
0.6
96
1500
$0.2799
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