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SPX2945U3-3.3 PDF预览

SPX2945U3-3.3

更新时间： 2024-11-24 22:15:27
品牌 Logo 应用领域
西伯斯 - SIPEX 稳压器调节器输出元件局域网
页数 文件大小 规格书
11页 101K
描述
500mA Low Drop Out Voltage Regulator with Shutdown

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中文翻译

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SPX2945U3-3.3 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：TO-220, 3 PINReach Compliance Code：unknown
风险等级：5.71Is Samacsys：N
最大回动电压 1：0.5 V最大输入电压：30 V
最小输入电压：6 VJESD-30 代码：R-PSFM-T3
JESD-609代码：e0功能数量：1
端子数量：3工作温度TJ-Max：125 °C
工作温度TJ-Min：-40 °C最大输出电流 1：0.5 A
最大输出电压 1：3.382 V最小输出电压 1：3.217 V
标称输出电压 1：3.3 V封装主体材料：PLASTIC/EPOXY
封装代码：TO-220封装形状：RECTANGULAR
封装形式：FLANGE MOUNT峰值回流温度（摄氏度）：NOT APPLICABLE
认证状态：Not Qualified调节器类型：FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
表面贴装：NO端子面层：TIN LEAD
端子形式：THROUGH-HOLE端子位置：SINGLE
处于峰值回流温度下的最长时间：NOT APPLICABLEBase Number Matches：1

SPX2945U3-3.3 数据手册

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®
SPX2945  
400mA Low Dropout Voltage Regulator with Shutdown  
FEATURES  
1.2V to 20V  
1
7
8
+VIN  
+VIN  
VOUT  
+
■ Output 3.3V, 5.0V at 400mA Output  
■ Very Low Quiescent Current, 100µA  
■ Low Dropout Voltage, 420mV at 400mA  
■ Extremely Tight Load and Line Regulation  
■ Very Low Temperature Coefficient  
■ Current & Thermal Limiting  
100K  
OFF  
0.01µF  
10µF  
R1  
FB  
SPX2945  
______  
ERROR  
SHUTDOWN  
INPUT  
ERROR  
SD  
3
5
OUTPUT  
GND  
4
VREF  
R2  
ON  
Adjustable Regulator  
■ Error Flag Warns Of Output Dropout  
■ Logic-Controlled Electronic Shutdown  
5V  
VIN  
IN  
OUT  
■ Output Programmable From 1.24V to 20V  
(for SO-8)  
SPX2945  
+
+
2.2 µF  
GND  
0.1 µF  
5V Regulator Circuit  
DESCRIPTION  
TheSPX2945isalowpowervoltageregulator.Thisdeviceisanexcellentchoiceforuseinbattery-powered  
applications such as cordless telephones, radio control systems, and portable computers. The SPX2945  
features very low quiescent current (100µA Typ.) and very low dropout voltage. This includes a tight initial  
tolerance of 1% max and very low output temperature coefficient, making the SPX2945 useful as a low-  
power voltage reference.  
The error flag output feature is used as power-on reset for warning of a low output voltage, due to a falling  
voltage input of batteries. Another feature is the logic-compatible shutdown input which enables the  
regulator to be switched on and off. The SPX2945 is offered in 3-pin TO-220 package, SO-8 (same pin  
out as SPX2951), SOT-223, surface mount 3-Pin TO-252, 3-Pin TO-263 packages and 5-Pin TO-263.  
The regulator output voltage (of the 8-pin SO-8) may be pin-strapped for a 3.3V and 5.0V or programmed  
from1.24Vto20Vwithanexternalpairofresistors. LookforSPX2951for150mAandSPX2954for250mA  
applications.  
TO-252 (R)  
TO-263-5 (T5)  
8-Pin Surface Mount  
SOT-223 (M3)  
(S)  
TO-220-3 (U)  
TO-263-3 (T)  
VOU  
1
8
7
VIN  
SPX2945  
SPX2945  
SPX2945  
2
SPX2945  
5 Pin TO-263  
SPX2945  
SENS  
SHUTDOWN  
GN  
FEEDBACK  
5V/ 3.3V TAP  
ERRO  
SPX2945  
1
2
3
1
2
3
1
3
2
3
4
6
5
1
2
3
1
2 3 4 5  
VIN  
VOU  
GN  
VIN GN VOU  
VIN GN  
VOU  
VIN GN VOU  
Rev. B Date:01/20/04  
SPX2945 400mA Low Dropout Voltage Regulator with Shutdown  
©Copyright 2004 Sipex Corporation  
1
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