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> LT1269CQ
LT1269CQ PDF预览

LT1269CQ

更新时间： 2024-11-22 22:34:31
品牌 Logo 应用领域
凌特 - Linear 稳压器开关
页数 文件大小 规格书
8页 216K
描述
4A High Efficiency Switching Regulators

阅读下载

中文翻译

获取价格

LT1269CQ 数据手册

 浏览型号LT1269CQ的Datasheet PDF文件第2页浏览型号LT1269CQ的Datasheet PDF文件第3页浏览型号LT1269CQ的Datasheet PDF文件第4页浏览型号LT1269CQ的Datasheet PDF文件第5页浏览型号LT1269CQ的Datasheet PDF文件第6页浏览型号LT1269CQ的Datasheet PDF文件第7页 
LT1271/LT1269  
4A High Efficiency  
Switching Regulators  
U
DESCRIPTIO  
EATURE  
S
F
■
■
■
■
■
■
■
■
■
Wide Input Voltage Range 3.5V to 30V  
Low Quiescent Current: 7mA  
The LT®1271 and LT1269 are monolithic high power  
switching regulators. Identical to the popular LT1070,  
except for switching frequency (LT1271 = 60kHz, LT1269  
= 100kHz) and slightly lower switch current, they can be  
operated in all standard switching configurations includ-  
ingbuck, boost, flybackandinverting. Ahighcurrent, high  
efficiency switch is included on the die along with all  
oscillator, control and protection circuitry. Integration of  
all functions allows the LT1271/LT1269 to be built in a  
Internal 4A Switch  
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 ExternallyO SyU nchronized (See LT1072 Data Sheet) standard TO-220 power package. This makes them ex-  
PPLICATI  
S
A
tremely easy to use and provides “bust proof” operation  
similar to that obtained with 3-pin linear regulators.  
■
Boost Converter  
■
High Efficiency Buck Converter  
PC Power Supply with Multiple Outputs  
Battery Up-Converter  
The LT1271/LT1269 operate with supply voltages from  
3.5V to 30V, and draw only 7mA quiescent current. By  
utilizing current mode switching techniques, they pro-  
vides excellent AC and DC load and line regulation.  
■
■
■
Negative-to-Positive Converter  
USER NOTE:  
A patented adaptive antisat switch drive allows very wide  
ranging load currents with no loss in efficiency. An exter-  
nally activated shutdown mode reduces total supply cur-  
rent to 100µA typical for standby operation.  
This data sheet is only intended to provide specifications, graphs, and a general functional  
description of the LT1271/LT1269. Application circuits are included to show the capability of the  
LT1271/LT1269. Acompletedesignmanual(AN-19)shouldbeobtainedtoassistindevelopingnew  
designs. This manual 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. The manual can also be used for the LT1271/LT1269 by factoring in the higher switch  
current rating and higher operating frequency.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
High Efficiency 5V Regulator with Burst ModeTM Operation  
Maximum Output Power  
50  
V
IN  
6.5V TO 25V  
V
V
SW  
IN  
BOOST  
BUCK-BOOST  
= 12V  
40  
30  
V
O
LT1271  
EFFICIENCY  
OUT  
≈ 90%  
(INVERTING)  
AT I = 0.4A TO 1.5A  
FB  
V
C
GND  
FLYBACK†  
1N4148  
0.02µF  
680Ω  
0.1µF  
20  
L1  
+
4.7µF  
0.03µF  
25µH  
TANT  
TO 50µH  
BUCK-BOOST  
0.015Ω  
10  
0
V
OUT  
5V, 3A  
V
= 5V  
O
(INVERTING)  
MBR  
330pF  
+
390µF  
16V  
0
5
15  
20  
25  
30  
10  
INPUT VOLTAGE (V)  
+
V
C
DIODE  
V
1271/69 TA02  
V
V
LIM  
BUCK MODE OUTPUT POWER  
≈
(3.5A)(V  
)
OUT  
IN  
+
C1  
†TRANSFORMER TURNS RATIO MUST BE  
OPTIMUM TO ACHIEVE FULL POWER.  
LT1432  
GND  
200µF  
V
OUT  
35V  
MODE  
<0.3V = NORMAL RUN MODE  
>2.5V = SHUTDOWN  
OPEN = BURST MODE OPERATION  
127/691 TA01  
1
12345678

中文翻译

下载PDF

与LT1269CQ相关器件

型号 品牌 获取价格 描述 数据表
LT1269CQ#TR Linear

获取价格

 		LT1269 - 4A High Efficiency Switching Regulators; Package: DD PAK; Pins: 5; Temperature Ra
LT1269CQ#TRPBF Linear

获取价格

 		LT1269 - 4A High Efficiency Switching Regulators; Package: DD PAK; Pins: 5; Temperature Ra
LT1269CS Linear

获取价格

 		4A High Efficiency Switching Regulators
LT1269CSW Linear

获取价格

 		LT1269 - 4A High Efficiency Switching Regulators; Package: SO; Pins: 20; Temperature Range
LT1269CSW#PBF Linear

获取价格

 		LT1269 - 4A High Efficiency Switching Regulators; Package: SO; Pins: 20; Temperature Range
LT1269CSW#TR Linear

获取价格

 		暂无描述
LT1269CSW#TRPBF Linear

获取价格

 		LT1269 - 4A High Efficiency Switching Regulators; Package: SO; Pins: 20; Temperature Range
LT1269CT Linear

获取价格

 		4A High Efficiency Switching Regulators
LT1269CT#PBF Linear

获取价格

 		LT1269 - 4A High Efficiency Switching Regulators; Package: TO-220; Pins: 5; Temperature Ra
LT1270 Linear

获取价格

 		8A and 10A High Efficiency Switching Regulators

与LT1269CQ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