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參數資料
| 型號： | SPX2951ACS-3.3 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 150mA Low Dropout Voltage Regulators |
| 中文描述： | 150mA的低壓差穩(wěn)壓器 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 135K |
| 代理商： | SPX2951ACS-3.3 |
1
Rev. 3/6/03
SPX2950/SPX2951 150mA Low Dropout Voltage Regulator
Copyright 2003 Sipex Corporation
SPX2950/SPX2951
DESCRIPTION
FEATURES
■
5.0V and 3.3V at 150mA Output
■
Accurate: 0.5% for SPX2950A/SPX2951A
■
Very Low Quiescent Current
■
Low Dropout Voltage: 300mV at 150mA
■
Extremely Tight Load and Line Regulation
■
Very Low Temperature Coefficient
■
Current & Thermal Limiting
■
Need Only 1
μ
F for Stability
■
Offered in TO-92 (SPX2950) and SOIC
(SPX2951)
■
Direct Replacement for LP2950/LP2951
SPX2951 versions only
■
Error Flag Warns of Output Dropout
■
Logic-Controlled Electronic Shutdown
■
Output Programmable From 1.24 to 30V
The SPX2950 and SPX2951 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 SPX2950 and SPX2951 feature low quiescent current and low dropout voltage (typ. 20mV
at 100
μ
A and 300mV at 150mA). This includes a tight initial tolerance of (0.5% for SPX2950A/SPX2951A),
extremely good load and line regulation (0.05% typ.), and very low output temperature coefficient (20ppm/
°
C typ.), making the SPX2950/SPX2951 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
voltage. The logic compatible shutdown feature enables the regulator to be switched ON and OFF. The
SPX2950 is offered in a 3-pin TO-92 package compatible with other 5.0V, 3.3V regulators. The SPX2951
is availiable in an 8-lead SOIC package.
150mA Low Dropout Voltage Regulator
Block Diagram of SPX2951, 8 Lead 5V Version
INPUT
OUTPUT
UNREGULATED DC
SHUTDOWN
GROUND
ERROR
______
SENSE
TO CMOS OR
TTL
REFERENCE
ERROR DETECTION
COMPARATOR
ERROR
AMPLIFIER
1.23V
FROM
CMOS OR
TTL
+
+
_
+
+
+
+
60 mV
3
7
8
1
2
6
5
4
60k
330k
180k
.
.
1
μ
F
_
FEEDBACK
5V TAP
5V
APPLICATIONS
■
Battery Powered Systems
■
Cordless Telephones
■
Radio Control Systems
■
Portable/Palm Top/Notebook Computers
■
Portable Consumer Equipment
■
Portable Instrumentation
■
Avionics
■
SMPS Post-Regulator
■
Voltage Reference
■
Automotive Electronics
相關PDF資料 |
PDF描述 |
|---|---|
| SPX2951ACS-5.0 | 150mA Low Dropout Voltage Regulators |
| SPX2951CS-5.0 | 150mA Low Dropout Voltage Regulators |
| SPX2950ACN-3.0 | JT 128C 128#22D PIN WALL RECP |
| SPX2950ACN-3.3 | 150mA Low Dropout Voltage Regulators |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| SPX2951ACS-5.0 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:150mA Low Dropout Voltage Regulators |
| SPX2951ACS-L-3-3 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SPX2951ACS-L-3-3/TR | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SPX2951ACS-L-5-0 | 功能描述:低壓差穩(wěn)壓器 - LDO 150mA LOW DROPOUT RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SPX2951ACS-L-5-0/TR | 功能描述:低壓差穩(wěn)壓器 - LDO 150mA LOW DROPOUT RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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