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參數(shù)資料
| 型號： | NCP1547 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | 1.5 A, 340 kHz, Buck Regulator with Synchronization Capability(1.5A, 340kHz, 具有同步能力的降壓穩(wěn)壓器) |
| 中文描述： | 1.5甲，340千赫，巴克與同步功能（1.5A的，340kHz，具有同步能力的降壓穩(wěn)壓器穩(wěn)壓器） |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 156K |
| 代理商： | NCP1547 |
Semiconductor Components Industries, LLC, 2007
March, 2007 Rev. 0
1
Publication Order Number:
NCP1547/D
NCP1547
1.5 A, 340 kHz, Buck
Regulator with
Synchronization Capability
The NCP1547 is a 1.5 A buck regulator IC operating at a
fixedfrequency of 340 kHz. The device uses the V
2
architecture to provide unmatched transient response, the best overall
regulation and the simplest loop compensation for today’s highspeed
logic. The NCP1547 accommodates input voltages from 4.5 V to 40 V
and contains synchronization circuitry.
The onchip NPN transistor is capable of providing a minimum of
1.5 A of output current, and is biased by an external “boost” capacitor
to ensure saturation, thus minimizing onchip power dissipation.
Protection circuitry includes thermal shutdown, cyclebycycle
current limiting and frequency foldback.
control
Features
V
2
Architecture Provides UltraFast Transient Response, Improved
Regulation and Simplified Design
2.0% Error Amp Reference Voltage Tolerance
Switch Frequency Decrease of 4:1 in Short Circuit Conditions
Reduces Short Circuit Power Dissipation
BOOST Lead Allows “Bootstrapped” Operation to Maximize
Efficiency
Sync Function for Parallel Supply Operation or Noise Minimization
Shutdown Lead Provides PowerDown Option
1.0 A Quiescent Current During PowerDown
Thermal Shutdown
SoftStart
This is a PbFree Device
MARKING
DIAGRAM
http://onsemi.com
18LEAD DFN
MN SUFFIX
CASE 505
1
NCP1547
AWLYYWW
1
18
18
A
WL
YY
WW
E
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Automotive Grade
= PbFree Package
(Note: Microdot may be in either location)
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
ORDERING INFORMATION
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| NCP1547DG | 功能描述:直流/直流開關調節(jié)器 340 KHZ REGULATOR RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| NCP1547DR2G | 功能描述:直流/直流開關調節(jié)器 340 KHZ REGULATOR RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| NCP1547MNR2G | 功能描述:直流/直流開關調節(jié)器 340 KHZ RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| NCP1550SN18T1 | 功能描述:直流/直流開關轉換器 1.8V 2A Buck PWM/PFM 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(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| NCP1550SN18T1G | 功能描述:直流/直流開關轉換器 1.8V 2A Buck PWM/PFM w/Enable Soft Start 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(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
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