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參數資料
| 型號： | NCP1521ASNT1G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | 1.5 MHz, 600 mA, High−Efficiency, Low Quiescent Current, Adjustable Output Voltage Step−Down Converter |
| 中文描述： | 1.2 A SWITCHING REGULATOR, 1800 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： | NCP1521ASNT1G |
Semiconductor Components Industries, LLC, 2006
July, 2006 Rev. 4
1
Publication Order Number:
NCP1521/D
NCP1521
1.5 MHz, 600 mA,
HighEfficiency, Low
Quiescent Current,
Adjustable Output Voltage
StepDown Converter
The NCP1521 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 1.5 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 NCP1521 is
available in space saving, low profile TSOP5 and UDFN6 packages.
Features
95.3% of Efficiency for 3.3 V Output and 4.2 V Input and 80 mA
LoadCurrent
Sources up to 600 mA
1.5 MHz Switching Frequency
Adjustable Output Voltage from 0.9 V to 3.3 V
30 A Quiescent Current
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
Digital Still/Video Cameras
MP3 Players and Portable Audio Systems
Wireless and DSL Modems
Portable Equipment
USB Powered Devices
GND
2
VIN
1
EN
3
LX
5
FB
4
OFF ON
VIN
CIN
COUT
R1
R2
Cff
Figure 1. Typical Application TSOP5
L
VOUT
GND
2
EN
1
VIN
3
FB
6
GND
4
OFF ON
2.2 H R1
R2
4.7 F
VOUT
5
LX
VIN
18 pF
10 F
Figure 2. Typical Application UDFN6
TSOP5
SN SUFFIX
CASE 483
http://onsemi.com
MARKING
DIAGRAM
1
5
Device
Package
Shipping
ORDERING INFORMATION
NCP1521ASNT1G
TSOP5
(PbFree)
3000/Tape & Reel
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.
DBP
A
Y
W
= Specific Device Code
= Assembly Location
= Year
= Work Week
= PbFree Package
(Note: Microdot may be in either location)
1
5
DBPAYW
ZCM
1
2
3
6
5
4
UDFN6
MU SUFFIX
CASE 517AB
ZC
M
= Specific Device Code
= Date Code
= PbFree Package
(Note: Microdot may be in either location)
NCP1521AMUTBG
UDFN6
(PbFree)
3000/Tape & Reel
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相關代理商/技術參數 |
參數描述 |
|---|---|
| NCP1521B | 制造商:ON 功能描述:1.5 MHz, 600 mA Step-Down DC-DC Converter |
| NCP1521BEVB | 功能描述:電源管理IC開發工具 NCP1521B ANA EVAL BOARD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| NCP1521BMUTBG | 功能描述:直流/直流開關轉換器 STEP DWN DCDC CNVRTR 1.5MHz 600mA RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| NCP1521BSNT1G | 功能描述:直流/直流開關轉換器 STEP DWN DCDC CNVRTR 1.5MHz 600mA RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| NCP1521UEVB | 功能描述:電源管理IC開發工具 ANA EVAL BRD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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