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參數資料
| 型號： | NCP1522ASNT1G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | 3.0 MHz, 600 mA, High−Efficiency, Low Quiescent Current, Adjustable Output Voltage Step−Down Converter |
| 中文描述： | 1.2 A SWITCHING REGULATOR, 3600 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | LEAD FREE, TSOP-5 |
| 文件頁數： | 1/17頁 |
| 文件大小： | 166K |
| 代理商： | NCP1522ASNT1G |
Semiconductor Components Industries, LLC, 2006
August, 2006 Rev. 3
1
Publication Order Number:
NCP1522/D
NCP1522
3.0 MHz, 600 mA,
HighEfficiency, Low
Quiescent Current,
Adjustable Output Voltage
StepDown Converter
The NCP1522 stepdown PWM DCDC converter is optimized
for portable applications powered from one cell Liion or three cell
Alkaline/NiCd/NiMH batteries. The device is available in an
adjustable output voltage from 0.9 V to 3.3 V. It uses synchronous
rectification to increase efficiency and reduce external part count.
The device also has a builtin 3.0 MHz (nominal) oscillator which
reduces component size by allowing a small inductor and capacitors.
Automatic switching PWM/PFM mode offers improved system
efficiency.
Finally, it includes an integrated softstart, cyclebycycle current
limiting, and thermal shutdown protection. The NCP1522 is
available in a space saving, low profile TSOP5 package.
Features
93.8% of Efficiency for 3.3 V Output and 4.5 V Input and 120 mA
Load Current
Sources up to 600 mA
3.0 MHz Switching Frequency
Adjustable Output Voltage from 0.9 V to 3.3 V
60 A Quiescent Current (Typ)
Synchronous Rectification for Higher Efficiency
2.7 V to 5.5 V Input Voltage Range
Thermal Limit Protection
Shutdown Current Consumption of 0.3 A
Short Circuit Protection
This is a PbFree Device
Typical Applications
Cellular Phones, Smart Phones and PDAs
MP3 Players and Portable Audio Systems
Wireless and DSL Modems
Portable Equipment
USB Powered Devices
Digital Still/Video Cameras
GND
2
VIN
1
EN
3
LX
5
FB
4
OFF ON
VIN
CIN
COUT
R1
R2
Cff
Figure 1. Typical Application
L
VOUT
TSOP5
ASN SUFFIX
CASE 483
PIN CONNECTIONS
Device
Package
Shipping
ORDERING INFORMATION
NCP1522ASNT1G
TSOP5
(PbFree)
3000/Tape & Reel
http://onsemi.com
MARKING
DIAGRAM
A
Y
W
= Assembly Location
= Year
= Work Week
= PbFree Package
(Note: Microdot may be in either location)
(Top View)
1
5
1
5
DBRAYW
1
2
3
5
4
VIN
GND
EN
LX
FB
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
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