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參數(shù)資料
| 型號： | LM34910 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 抗輻射高效，5安培開關(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大小： | 583K |
| 代理商： | LM34910 |
LM34910
High Voltage (40V, 1.25A) Step Down Switching
Regulator
General Description
The LM34910 Step Down Switching Regulator features all of
the functions needed to implement a low cost, efficient, buck
bias regulator capable of supplying 1.25A to the load. This
buck regulator contains a 40V N-Channel Buck Switch, and
is available in the thermally enhanced LLP-10 package. The
hysteretic regulation scheme requires no loop compensa-
tion, results in fast load transient response, and simplifies
circuit implementation. The operating frequency remains
constant with line and load variations due to the inverse
relationship between the input voltage and the on-time. The
current limit detection is set at 1.25A. Additional features
include: VCC under-voltage lockout, thermal shutdown, gate
drive under-voltage lockout, and maximum duty cycle limiter.
Features
n
Integrated 40V, N-Channel buck switch
n
Integrated start-up regulator
n
Input Voltage Range: 8V to 36V
n
No loop compensation required
n
Ultra-Fast transient response
n
Operating frequency remains constant with load current
and input voltage
n
Maximum Duty Cycle Limited During Start-Up
n
Adjustable output voltage
n
Valley Current Limit At 1.25A
n
Precision internal reference
n
Low bias current
n
Highly efficient operation
n
Thermal shutdown
Typical Applications
n
High Efficiency Point-Of-Load (POL) Regulator
n
Non-Isolated Telecommunication Buck Regulator
n
Secondary High Voltage Post Regulator
Package
n
LLP-10 (4 mm x 4 mm)
n
Exposed Thermal Pad For Improved Heat Dissipation
Connection Diagram
20110902
10-Lead LLP
Ordering Information
Order Number
LM34910SD
LM34910SDX
Package Type
LLP-10 (4x4)
LLP-10 (4x4)
NSC Package Drawing
SDC10A
SDC10A
Supplied As
1000 Units on Tape and Reel
4500 Units on Tape and Reel
February 2005
L
2005 National Semiconductor Corporation
DS201109
www.national.com
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PDF描述 |
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| LM34910SD | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LM34910SDX | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM34910C | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Voltage (50V, 1.25A) Step Down Switching Regulator |
| LM34910CSD | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:STEP DOWN REG 50V 1.2A LLP-10 |
| LM34910CSD/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)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(fēng)格:SMD/SMT |
| LM34910CSDE | 制造商:Texas Instruments 功能描述:HIGH VOLTAGE (50V 1.25A) STEP DOWN SWITCHING REGULATOR |
| LM34910CSDE/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)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(fēng)格:SMD/SMT |
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