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SPX2954AS-3-3

更新时间： 2024-11-28 12:15:11
品牌 Logo 应用领域
西伯斯 - SIPEX 线性稳压器IC调节器电源电路光电二极管输出元件
页数 文件大小 规格书
17页 214K
描述
250mA Low Dropout Voltage Regulator

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中文翻译

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SPX2954AS-3-3 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：MS-012AA, SOIC-8Reach 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：4.3 VJESD-30 代码：R-PDSO-G8
长度：4.9 mm湿度敏感等级：1
功能数量：1端子数量：8
工作温度TJ-Max：125 °C工作温度TJ-Min：-40 °C
最大输出电流 1：0.25 A最大输出电压 1：3.35 V
最小输出电压 1：3.251 V标称输出电压 1：3.3 V
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调节器类型：FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度：1.75 mm表面贴装：YES
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL宽度：3.9 mm
Base Number Matches：1

SPX2954AS-3-3 数据手册

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®
SPX2954  
250mA Low DropoutVoltage Regulator  
FEATURES  
+VIN  
■ 5.0V and 3.3V Versions at 250mA  
Output  
100K  
8
■ Accurate 0.5% for SPX2954A  
■ Very Low Quiescent Current  
+VIN  
______  
ERROR  
ERROR  
5
1.2 to 30V  
1
OUTPUT  
VOUT  
■ Low Dropout: 310mV at 250mA  
■ Extremely Tight Load and Line Regulation  
■ Very Low Temperature Coefficient  
■ Current and Thermal Limiting  
■ Need only 1µF for Stability  
SPX2954  
+
SHUTDOWN  
INPUT  
3
R1  
3.3µF  
SD  
.01µF  
FB  
7
GND  
4
1.23V  
VREF  
■ Direct Replacement for LP2954  
R2  
■ Offered in TO-92, TO-263, SOT-223, &  
TO-220; also SOIC--8 Pin Versions Only  
■ Error Flag Warns of Output Dropout  
■ Logic-Controlled Electronic Shutdown  
■ Programmable Output from 1.24V to 30V  
DESCRIPTION  
The SPX2954 and SPX2954A are low power voltage regulators. These devices are an excellent  
choice for use in battery-powered applications such as cordless telephones, radio control  
systems, and portable computers. The SPX2954 and SPX2954A feature low quiescent current  
and low dropout voltage (typ. 20mV at 100µA and 310mV at 250mA). This includes a tight initial  
tolerance (0.5% for SPX2954A), extremely good load and line regulation (0.05% typ.), and very  
low output temperature coefficient (20 ppm/°C typ.), making the SPX2954/SPX2954A useful as  
a low-power voltage reference.  
The error flag output feature is used as a power-on reset for warning of a low output voltage, due  
to a falling input voltage. The logic-compatible shutdown feature enables the regulator to be  
switched ON and OFF. The SPX2954/SPX2954A is offered in 3-pin TO-92, TO-263, SOT-223  
and TO-220 packages, and 8 pin SOIC package.  
Note:: Tab is internally connected to GND on T0-263, SOT-223, and TO-220-3.  
8-Pin Surface Mount (S)  
TO-263-3 Package (T) 
TO-92 (N)  
SOT-223 Package (M3)  
TO-220-3 Package (U) 
INPUT  
OUTPUT  
SENSE  
1
2
3
8
7
6
5
1
2
3
FEEDBACK  
5V, 3.3V TAP  
ERROR  
SPX2954  
SPX2954  
SPX2954  
SPX2954  
1
2
3
SHUTDOWN  
1
2
3
INPUT  
OUTPUT  
4
GND  
GND  
GND  
V
OUT  
V
IN  
Bottom View  
Front View  
Top View  
VIN  
GND VOUT  
Top View  
1
2
3
VIN  
V
GND  
OUT  
Front View  
Pin Connections  
Date: 12/9/05  
SPX2954, 250mA Low Dropout Voltage Regulator  
© Copyright 2005 Sipex Corporation  
1
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中文翻译

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