Converters | NCP1522B
概览
The NCP1522B step- down DC-DC converter is a monolithic integrated circuit optimized for portable applications powered from one cell Li- Ion or three cell Alkaline/NiCd/NiMH batteries. The part, available in adjustable output voltage versions ranging from 0.9 V to 3.3 V, is able to deliver up to 600 mA. It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built- in 3 MHz (nominal) oscillator which reduces component size by allowing smaller inductors and capacitors. Automatic switching PWM/PFM mode offers improved system efficiency. Additional features include integrated soft- start, cycle- by- cycle current limiting and thermal shutdown protection. The NCP1522B is available in a space saving, low profile TSOP5 and UDFN6 packages.
- 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
- 94% efficiency, 50 uA quiescent current, 0.3 uA shutdown current
- 3.0 MHz switching frequency
- Auto-switching between PWM and PFM mode at light load conditions
- Adjustable output voltage from 0.9V to 3.3V
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Obsolete
Pb
A
H
P
UDFN-6
1
260
REEL
3000
N
Step-Down
Voltage Mode
2.7
5.5
0.9 to 3.3
0.6
95
3000
Price N/A
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Obsolete
Pb
A
H
P
TSOP-5 / SOT-23-5
1
260
REEL
3000
N
Step-Down
Voltage Mode
2.7
5.5
0.9 to 3.3
0.6
95
3000
Price N/A
More Details
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