5秒后页面跳转
捷配首页

Datasheet > 电源电路 > 开关式稳压器或控制器> LT1270
LT1270 PDF预览

LT1270

更新时间： 2024-11-22 22:55:51
品牌 Logo 应用领域
凌特 - Linear 稳压器开关
页数 文件大小 规格书
4页 182K
描述
8A and 10A High Efficiency Switching Regulators

阅读下载

中文翻译

获取价格

LT1270 数据手册

 浏览型号LT1270的Datasheet PDF文件第2页浏览型号LT1270的Datasheet PDF文件第3页浏览型号LT1270的Datasheet PDF文件第4页 
LT1270A/LT1270  
8A and 10A High Efficiency  
Switching Regulators  
U
DESCRIPTIO  
EATURE  
S
F
■
■
■
■
■
■
■
■
■
Wide Input Voltage Range: 3.5V to 30V  
Low Quiescent Current: 7mA  
The LT1270A/LT1270 are monolithic high power switch-  
ing regulators. Identical to the popular LT1070, except for  
switching frequency (60kHz) and higher switch current,  
they can be operated in all standard switching configura-  
tions including buck, boost, flyback, and inverting. A high  
current, high efficiency switch is included on the die along  
with all oscillator, control, and protection circuitry. Inte-  
gration of all functions allows the LT1270A/LT1270 to be  
built in a standard TO-220 power package. This makes it  
extremelyeasytouseandprovides“bustproof”operation  
similar to that obtained with 3-pin linear regulators.  
Internal 8A Switch (10A for LT1270A)  
Very Few External Parts Required  
Self-Protected Against Overloads  
Shutdown Mode Draws Only 100µA Supply Current  
Flyback-Regulated Mode Has Fully Floating Outputs  
Comes in Standard 5-Pin Package  
Can be Externally Synchronized  
(See LT1072 Data Sheet)  
O U  
PPLICATI  
S
A
■
■
■
■
The LT1270A/LT1270 operate with supply voltages from  
3.5V to 30V, and draw only 7mA quiescent current. By  
utilizing current-mode switching techniques, they provide  
excellent AC and DC load and line regulation.  
High Efficiency Buck Converter  
PC Power Supply with Multiple Outputs  
Battery Upconverter  
Negative-to-Positive Converter  
TheLT1270A/LT1270useadaptiveanti-satswitchdriveto  
allow very wide ranging load currents with no loss in  
efficiency. An externally activated shutdown mode re-  
duces total supply current to 100µA typical for standby  
operation.  
USER NOTE:  
This data sheet is only intended to provide specifications, graphs and a general functional  
description of the LT1270A/LT1270. Application circuits are included to show the capability of the  
LT1270A/LT1270. A complete design manual (AN-19) should be obtained to assist in developing  
new designs. AN-19 contains a comprehensive discussion of both the LT1070 and the external  
components used with it, as well as complete formulas for calculating the values of these  
components. AN-19 can also be used for the LT1270A/LT1270 by factoring in the higher switch  
current rating and higher operating frequency.  
A comprehensive CAD program called SwitcherCad is also available. Contact the local sales office  
in your area or the factory direct.  
U
O
TYPICAL APPLICATI  
Maximum Output Power*  
High Efficiency† Buck Converter  
100  
BOOST  
†EFFICIENCY IS ≈ 88% @ 2A, 86% @ 5A.  
V
IN  
(8V TO 25V)  
FOµRPOWER SHUTDOWN OPTION, CONSULT FACTORY.  
BUCK-BOOST,  
= 12V  
V
V
80  
60  
SW  
V
*THESE COMPONENTS RATED CONSERVATIVELY TO  
IMPROVE EFFICIENCY. MAXIMUM OUTPUT CURRENT  
CAN BE 7A. FOR HIGH EFFICIENCY, THE INDUCTOR SHOULD  
BE MOLYPERMALLOY OR FERRITE.  
O
1N5819  
LT1270*  
(INVERTING)  
FB  
IN  
FLYBACK†  
GND  
V
C
+
1µF  
0.047µF  
0.047µF  
40  
1k  
35µH, 8A*  
5V*  
5A  
BUCK-BOOST, V = 5V  
O
20  
0
(INVERTING)  
9.1k  
10k  
ANODE  
+
LT1431CZ REF  
CATHODE  
470µF  
35V  
MBR1035*  
2N3904  
0
5
15  
20  
25  
30  
10  
INPUT VOLTAGE (V)  
LT1270 • TA02  
1N4158  
560Ω  
1000µF  
*MULTIPLY BY 1.2 FOR LT1270A.  
360Ω  
25V  
BUCK MODE OUTPUT POWER ≈ (7.5A)(V  
)
OUT  
† TRANSFORMER TURNS RATIO MUST BE  
OPTIMUM TO ACHIEVE FULL POWER  
LT1270 • TA01  
1
1234

中文翻译

下载PDF

与LT1270相关器件

型号 品牌 获取价格 描述 数据表
LT1270_15 Linear

获取价格

 		8A and 10A High Efficiency Switching Regulators
LT1270A Linear

获取价格

 		8A and 10A High Efficiency Switching Regulators
LT1270A_15 Linear

获取价格

 		8A and 10A High Efficiency Switching Regulators
LT1270AC Linear

获取价格

 		8A and 10A High Efficiency Switching Regulators
LT1270ACT Linear

获取价格

 		8A and 10A High Efficiency Switching Regulators
LT1270ACT#PBF Linear

获取价格

 		LT1270 - 8A and 10A High Efficiency Switching Regulators; Package: TO-220; Pins: 5; Temper
LT1270C Linear

获取价格

 		8A and 10A High Efficiency Switching Regulators
LT1270CT Linear

获取价格

 		8A and 10A High Efficiency Switching Regulators
LT1270CT#PBF Linear

获取价格

 		LT1270 - 8A and 10A High Efficiency Switching Regulators; Package: TO-220; Pins: 5; Temper
LT1271 Linear

获取价格

 		4A High Efficiency Switching Regulators

与LT1270相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证