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LP2957AIT

更新时间: 2024-11-21 22:46:59
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器调节器输出元件局域网
页数 文件大小 规格书
14页 381K
描述
5V Low-Dropout Regulator for P Applications

LP2957AIT 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:BENT STAGGERED, TO-220, 5 PINReach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.17可调性:FIXED
最大回动电压 1:0.8 V标称回动电压 1:0.8 V
最大绝对输入电压:30 V最大输入电压:30 V
最小输入电压:6 VJESD-30 代码:R-PSFM-T5
JESD-609代码:e0最大电网调整率:0.01%
最大负载调整率:0.01%湿度敏感等级:1
功能数量:1输出次数:1
端子数量:5最高工作温度:125 °C
最低工作温度:-40 °C最大输出电流 1:0.25 A
最大输出电压 1:5.07 V最小输出电压 1:4.93 V
标称输出电压 1:5 V封装主体材料:PLASTIC/EPOXY
封装代码:TO-220封装等效代码:ZIP5,.15,.2,67TB
封装形状:RECTANGULAR封装形式:FLANGE MOUNT
峰值回流温度(摄氏度):260认证状态:Not Qualified
调节器类型:FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR子类别:Other Regulators
表面贴装:NO技术:BIPOLAR
端子面层:Tin/Lead (Sn/Pb)端子形式:THROUGH-HOLE
端子节距:1.7 mm端子位置:SINGLE
处于峰值回流温度下的最长时间:40最大电压容差:1.4%
Base Number Matches:1

LP2957AIT 数据手册

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June 1998  
LP2957/LP2957A  
5V Low-Dropout Regulator for µP Applications  
General Description  
Features  
n 5V output within 1.4% over temperature (A grade)  
n Easily programmed for snap-on/snap-off output  
n Guaranteed 250 mA output current  
The LP2957 is a 5V micropower voltage regulator with elec-  
tronic shutdown, error flag, very low quiescent current  
(150 µA typical at 1 mA load), and very low dropout voltage  
(470 mV typical at 250 mA load current).  
n Extremely low quiescent current  
Output can be wired for snap-on/snap-off operation to elimi-  
nate transition voltage states where µP operation may be un-  
predictable.  
n Low Input-Output voltage required for regulation  
n Reverse battery protection  
n Extremely tight line and load regulation  
n Very low temperature coefficient  
n Current and thermal limiting  
n Error flag signals when output is out of regulation  
Output crowbar (50 mA typical pull-down current) will bring  
down the output quickly when the regulator snaps off or  
when the shutdown function is activated.  
The part has tight line and load regulation (0.04% typical)  
and low output temperature coefficient (20 ppm/˚C typical).  
Applications  
n High-efficiency linear regulator  
n Battery-powered regulator  
The accuracy of the 5V output is guaranteed at room tem-  
perature and over the full operating temperature range.  
The LP2957 is available in the five-lead TO-220 and TO-263  
packages.  
Package Outline  
Bent, Staggered Leads  
5-Lead TO-220 (T)  
DS011340-16  
Top View  
Order Number LP2957AIT or LP2957IT  
See NS Package Number T05D  
Plastic Surface Mount Package  
5-Lead TO-263 (S)  
DS011340-17  
Top View  
DS011340-18  
Side View  
Order Number LP2957AIS or LP2957IS  
See NS Package Number TS5B  
© 1999 National Semiconductor Corporation  
DS011340  
www.national.com  

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