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參數資料
| 型號： | LM5005MHX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | High Voltage 2.5 Amp Buck Regulator |
| 中文描述： | 4.25 A SWITCHING REGULATOR, 525 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | TSSOP-20 |
| 文件頁數： | 1/21頁 |
| 文件大小： | 774K |
| 代理商： | LM5005MHX |
LM5005
High Voltage 2.5 Amp Buck Regulator
General Description
The LM5005 high voltage switching regulator features all of
the functions necessary to implement an efficient high volt-
age buck regulator using a minimum of external compo-
nents. This easy to use regulator includes a 75V N-Channel
buck switch with an output current capability of 2.5 Amps.
The regulator control method is based upon current mode
control utilizing an emulated current ramp. Current mode
control provides inherent line feed-forward, cycle-by-cycle
current limiting and ease of loop compensation. The use of
an emulated control ramp reduces noise sensitivity of the
pulse-width modulation circuit, allowing reliable control of
very small duty cycles necessary in high input voltage appli-
cations. The operating frequency is programmable from
50kHz to 500kHz. An oscillator synchronization pin allows
multiple LM5005 regulators to self-synchronize or to be syn-
chronized to an external clock. Additional protection features
include: current limit, thermal shutdown and remote shut-
down capability. The device is available in a power enhanced
TSSOP-20 package featuring an exposed die attach pad to
aid thermal dissipation.
Features
n
Integrated 75V, 2.5A N-Channel Buck Switch
n
Ultra-wide input voltage range from 7V to 75V
n
Internal high voltage bias regulator
n
Adjustable output voltage from 1.225V
n
1.5% feedback reference accuracy
n
Current mode control with emulated inductor current
ramp
n
Single resistor oscillator frequency setting
n
Oscillator synchronization input
n
Programmable soft-start
n
Shutdown / Standby input
n
Wide bandwidth error amplifier
n
Thermal Shutdown
Package
n
TSSOP-20EP (Exposed Pad)
Simplified Application Schematic
20161901
September 2005
L
2005 National Semiconductor Corporation
DS201619
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM5005MHX/NOPB | 功能描述:直流/直流開關轉換器 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 |
| LM5006 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Evaluation Board provides the design engineer with a fully functional |
| LM5006EVAL/NOPB | 功能描述:電源管理IC開發工具 LM5006 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 |
| LM5006EVAL/NOPB | 制造商:Texas Instruments 功能描述:EVAL BOARD, LM5006 5V, 500mA SYNC STEP-D |
| LM5006MM/NOPB | 功能描述:直流/直流開關調節器 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 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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