參數(shù)資料
型號(hào)： LM2672N-ADJ
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator with Features
中文描述： 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDIP8
封裝： 0.300 INCH, PLASTIC, DIP-8
文件頁(yè)數(shù)： 10/25頁(yè)
文件大?。?/td> 895K
代理商： LM2672N-ADJ
Test Circuit and Layout Guidelines
(Continued)
LM2672 Series Buck Regulator
Design Procedure (Fixed Output)
PROCEDURE (Fixed Output Voltage Version)
To simplify the buck regulator design procedure, National
Semiconductor is making available computer design software to
be used with the
SIMPLE SWITCHER
line of switching
regulators.
LM267X Made Simple
version 1.0 is available on
Windows
3.1, NT, or 95 operating systems.
Given:
V
OUT
= Regulated Output Voltage (3.3V, 5V, or 12V)
V
IN
(max) = Maximum DC Input Voltage
I
LOAD
(max) = Maximum Load Current
EXAMPLE (Fixed Output Voltage Version)
Given:
V
OUT
= 5V
V
IN
(max) = 12V
I
LOAD
(max) = 1A
01293423
C
IN
- 22 μF, 50V Tantalum, Sprague “199D Series”
C
OUT
- 47 μF, 25V Tantalum, Sprague “595D Series”
D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F
L1 - 68 μH Sumida #RCR110D-680L
R1 - 1.5 k
, 1%
C
B
- 0.01 μF, 50V Ceramic
For a 5V output, select R2 to be 4.75 k
, 1%
where V
REF
= 1.21V
Use a 1% resistor for best stability.
FIGURE 3. Standard Test Circuits and Layout Guides
Adjustable Output Voltage Versions
L
www.national.com
10
相關(guān)PDF資料
PDF描述
LM2672M-ADJ SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator with Features
LM2673S-12 SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current Limit
LM2673S-3.3 SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current Limit
LM2673S-5.0 SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current Limit
LM2673S-ADJ SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current Limit
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2672N-ADJ 制造商:Texas Instruments 功能描述:SWITCHING REG 1A ADJ 2672 DIP8
LM2672N-ADJ/NOPB 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2673 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
LM2673_08 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER㈢ 3A Step-Down Voltage Regulator with Adjustable Current Limit
LM2673-5.0EVAL 功能描述:電源管理IC開(kāi)發(fā)工具 EVAL BOARDFOR LM2673 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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