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SPX2954AN-3-3

更新时间: 2024-11-28 21:19:39
品牌 Logo 应用领域
艾科嘉 - EXAR /
页数 文件大小 规格书
17页 206K
描述
Regulator, 1 Output, BIPolar,

SPX2954AN-3-3 技术参数

是否Rohs认证:不符合生命周期:Obsolete
零件包装代码:TO-92针数:3
Reach Compliance Code:unknown风险等级:5.63
Is Samacsys:N可调性:FIXED
标称回动电压 1:0.31 V最大绝对输入电压:30 V
最大电网调整率:0.0066%最大负载调整率:0.0099%
输出次数: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 1:0.25 A标称输出电压 1:3.3 V
封装主体材料:PLASTIC/EPOXY封装等效代码:SIP3,.1,50
认证状态:Not Qualified子类别:Other Regulators
表面贴装:NO技术:BIPOLAR
端子节距:1.27 mm端子位置:SINGLE
最大电压容差:1.5%Base Number Matches:1

SPX2954AN-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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