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參數資料
| 型號： | LM2675N-3.3EP |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | 0.300 INCH, DIP-8 |
| 文件頁數： | 1/25頁 |
| 文件大小： | 516K |
| 代理商： | LM2675N-3.3EP |
LM2675EP
Enhanced Plastic SIMPLE SWITCHER Power Converter
High Efficiency 1A Step-Down Voltage Regulator
General Description
The LM2675EP series of regulators are monolithic inte-
grated circuits built with a LMDMOS process. These regula-
tors provide all the active functions for a step-down (buck)
switching regulator, capable of driving a 1A load current with
excellent line and load regulation. These devices are avail-
able in fixed output voltages of 3.3V, 5.0V, 12V, and an
adjustable output version.
Requiring a minimum number of external components, these
regulators are simple to use and include patented internal
frequency compensation (Patent Nos. 5,382,918 and
5,514,947) and a fixed frequency oscillator.
The LM2675EP series operates at a switching frequency of
260 kHz, thus allowing smaller sized filter components than
what would be needed with lower frequency switching regu-
lators. Because of its very high efficiency (>90%), the cop-
per traces on the printed circuit board are the only heat
sinking needed.
A family of standard inductors for use with the LM2675EP
are available from several different manufacturers. This fea-
ture greatly simplifies the design of switch-mode power sup-
plies using these advanced ICs. Also included in the
datasheet are selector guides for diodes and capacitors
designed to work in switch-mode power supplies.
Other features include a guaranteed ±1.5% tolerance on
output voltage within specified input voltages and output
load conditions, and ±10% on the oscillator frequency. Ex-
ternal shutdown is included, featuring typically 50 A
stand-by current. The output switch includes current limiting,
as well as thermal shutdown for full protection under fault
conditions.
To simplify the LM2675EP buck regulator design procedure,
there exists computer design software, LM267X Made
Simple version 6.0.
ENHANCED PLASTIC
Extended Temperature Performance of40C to +125C
Baseline Control - Single Fab & Assembly Site
Process Change Notification (PCN)
Qualification & Reliability Data
Solder (PbSn) Lead Finish is standard
Enhanced Diminishing Manufacturing Sources (DMS)
Support
Features
n
Efficiency up to 96%
n
Available in SO-8, 8-pin DIP and LLP packages
n
Computer Design Software LM267X Made Simple
(version 6.0)
n
Simple and easy to design with
n
Requires only 5 external components
n
Uses readily available standard inductors
n
3.3V, 5.0V, 12V, and adjustable output versions
n
Adjustable version output voltage range: 1.21V to 37V
n ±
1.5% max output voltage tolerance over line and load
conditions
n
Guaranteed 1A output load current
n
0.25
DMOS Output Switch
n
Wide input voltage range: 8V to 40V
n
260 kHz fixed frequency internal oscillator
n
TTL shutdown capability, low power standby mode
n
Thermal shutdown and current limit protection
Typical Applications
n
Simple High Efficiency (>90%) Step-Down (Buck)
Regulator
n
Efficient Pre-Regulator for Linear Regulators
n
Positive-to-Negative Converter
n
Selected Military Applications
n
Selected Avionics Applications
Ordering Information
PART NUMBER
VID PART NUMBER
NS PACKAGE NUMBER (Note 3)
LM2675MX-ADJEP
V62/04630-01
M08A
(Notes 1, 2)
TBD
Note 1: For
the
following
(Enhanced
Plastic)
versions,
check
for
availability:
LM2675LD-12EP,
LM2675LDX-12EP,
LM2675LD-3.3EP, LM2675LDX-3.3EP, LM2675LD-5.0EP, LM2675LDX-5.0EP, LM2675LD-ADJEP, LM2675LDX-ADJEP, LM2675M-12EP, LM2675MX-12EP,
LM2675M-3.3EP,
LM2675MX-3.3EP,
LM2675M-5.0EP,
LM2675MX-5.0EP,
LM2675M-ADJEP,
LM2675N-12EP,
LM2675N-3.3EP,
LM2675N-5.0EP,
LM2675N-ADJEP. Parts listed with an "X" are provided in Tape & Reel and parts without an "X" are in Rails.
Note 2: FOR ADDITIONAL ORDERING AND PRODUCT INFORMATION, PLEASE VISIT THE ENHANCED PLASTIC WEB SITE AT: www.national.com/
mil
Note 3: Refer to package details under Physical Dimensions
SIMPLE SWITCHER is a registered trademark of National Semiconductor Corporation.
Windows is a registered trademark of Microsoft Corporation.
May 2004
LM2675EP
Enhanced
Plastic
SIMPLE
SWITCHER
Power
Converter
High
Efficiency
1A
Step-Down
V
oltage
Regulator
2004 National Semiconductor Corporation
DS200994
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM2675N-5.0 | 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 |
| LM2675N-5.0 | 制造商:Texas Instruments 功能描述:SWITCHING REG 1A 5.0V 2675 DIP8 |
| LM2675N-5.0/NOPB | 功能描述:直流/直流開關轉換器 HIGH EFF 1A STEP- DOWN VLTG REG 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 |
| LM2675N-5.0/NOPB | 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu |
| LM2675N-ADJ | 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 |
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