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E-L4971D013TR PDF预览

E-L4971D013TR

更新时间: 2024-09-18 15:31:39
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 开关光电二极管
页数 文件大小 规格书
13页 570K
描述
1.5A Switching Regulator

E-L4971D013TR 技术参数

生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP,针数:16
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.22
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:55 V
最小输入电压:8 V标称输入电压:24 V
JESD-30 代码:R-PDSO-G16长度:10.3 mm
功能数量:1端子数量:16
最大输出电流:3 A封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE认证状态:Not Qualified
座面最大高度:2.65 mm表面贴装:YES
切换器配置:BUCK最大切换频率:300 kHz
技术:BCDMOS端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
宽度:7.5 mmBase Number Matches:1

E-L4971D013TR 数据手册

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L4971  
1.5A STEP DOWN SWITCHING REGULATOR  
1 FEATURES  
Figure 1. Package  
UP TO 1.5A STEP DOWN CONVERTER  
OPERATING INPUT VOLTAGE FROM 8V TO  
55V  
PRECISE 3.3V ( 1ꢀ% INTERNAL  
DIP8  
SO16W  
REFERENCE VOLTAGE  
OUTPUT VOLTAGE ADJUSTABLE FROM  
Table 1. Order Codes  
3.3V TO 50V  
Part Number  
L4971  
Package  
DIP8  
SWITCHING FREQUENCY ADJUSTABLE UP  
TO 300KHz  
VOLTAGE FEEDFORWARD  
L4971D  
SO16W  
ZERO LOAD CURRENT OPERATION  
L4971D013TR  
SO16 in Tape & Reel  
INTERNAL CURRENT LIMITING (PULSE-  
BYPULSE AND HICCUP MODE%  
A switching frequency up to 300KHz is achievable  
(the maximum power dissipation of the packages  
must be observed%.  
INHIBIT FOR ZERO CURRENT  
CONSUMPTION  
PROTECTION AGAINST FEEDBACK  
DISCONNECTION  
A wide input voltage range between 8V to 55V and  
output voltages regulated from 3.3V to 50V cover  
the majority of today’s applications.  
THERMAL SHUTDOWN  
SOFT START FUNCTION  
Features of this new generations of DC-DC con-  
verter include pulse-by-pulse current limit, hiccup  
mode for short circuit protection, voltage feedfor-  
ward regulation, soft-start, protection against feed-  
back loop disconnection, inhibit for zero current  
consumption and thermal shutdown.  
The device is available in plastic dual in line, DIP8  
for standard assembly, and SO16W for SMD as-  
sembly.  
2 DESCRIPTION  
The L4971 is a step down monolithic power  
switching regulator delivering 1.5A at a voltage be-  
tween 3.3V and 50V (selected by a simple external  
divider%. Realized in BCD mixed technology, the  
device uses an internal power D-MOS transistor  
(with a typical Rdson of 0.25% to obtain very high  
efficency and high switching speed.  
Figure 1. Block Diagram  
Vi=8V to 55V  
5
8
R1  
20K  
L4971  
3
2
4
C1  
220µF  
63V  
C7  
220nF  
C2  
2.7nF  
L1  
126µH  
(77120%  
7
1
6
VO=3.3V/1.5A  
C6  
100nF  
R2  
9.1K  
D1  
STPS  
3L60U  
C8  
330µF  
C5  
100nF  
C4  
22nF  
D97IN748A  
Rev. 11  
1/13  
May 2005  

E-L4971D013TR 替代型号

型号 品牌 替代类型 描述 数据表
E-L4971D STMICROELECTRONICS

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