參數(shù)資料
型號(hào)： SPX2946
英文描述： 500mA Low Drop Out Voltage Regulator with Shutdown（Output Programmable From 1.24V to 29V）(500mA，低壓差穩(wěn)壓器(帶關(guān)斷,可編程輸出從1.24V-29V))
中文描述： 500mA的低壓差電壓調(diào)節(jié)器的關(guān)斷（輸出可編程從兩種器件的29V）（500mA的，低壓差穩(wěn)壓器（帶關(guān)斷，可編程輸出從兩種器件- 29V））
文件頁(yè)數(shù)： 1/15頁(yè)
文件大?。?/td> 214K
代理商： SPX2946
Rev. 10/25/00
SPX2945/46/47
500mA Low Drop Out Voltage Regulator
with Shutdown
(PRELIMINARY INFORMATION)
FEATURES
Output Accuracy 3.3V, 5.0V, @ 500mA Output
Very Low Quiescent Current
Low Dropout Voltage
Extremely Tight Load And Line Regulation
Very Low Temperature Coefficient
Current & Thermal Limiting
Error Flag Warns Of Output Dropout
Logic-Controlled Electronic Shutdown
Output Programmable From 1.24V to 29V
PRODUCT DESCRIPTION
The SPX2945/46/47 is a low power voltage regulator. This device is an excellent choice for use in battery-powered applications such
as cordless telephones, radio control systems, and portable computers. The SPX2945/46/47 features very low quiescent current
(100
μ
A Typ.) and very low dropout voltage. This includes a tight initial tolerance of 1% max and very low output temperature
coefficient, making the SPX2945/46/47 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 SPX2945/46/47 is
offered in 3-pin and 5-pin TO-220 package, SO-8 (same pin out as SPX2951), SOT-223, and surface mount TO-263 packages.
The regulator output voltage (of the 8-pin SO-8 and 5-pin TO-220 & TO-263) may be pin-strapped for a 3.3V and 5.0V or
programmed from 1.24V to 29V with an external pair of resistors. Look for SPX2951 for 150mA, SPX2954 for 250mA and SPX2955
for 350mA applications.
APPLICATIONS
Battery Powered Systems
Cordless Telephones
Radio Control Systems
Portable/Palm Top/Notebook Computers
Portable Consumer Equipment
Portable Instrumentation
Automotive Electronics
SMPS Post-Regulator
Voltage Reference
PIN CONNECTIONS
TO-263-5 (T)
Top View
4 5
SPX2946/47
1 2 3
Front View
TO-220-3 (U)
SPX2945
1
2
3
TO-220-5 (U)
Front View
5
4
3
2
1
SPX2946/47
Top View
TO-252 (R)
1
2
3
1) ERROR
2) V
IN
3) GND
4) V
OUT
5) SHUTDOWN
SPX2946
1) ERROR
2) SHUTDOWN
3) GND
4) V
IN
5) V
OUT
SPX2947
Five Lead Package Pin Functions:
V
IN
TO-263-3 (T)
Top View
1
SPX2945
2
3
V
OUT
GND
V
IN
V
OUT
GND
V
IN
V
OUT
GND
SPX2945
Top View
2
1
3
4
8
7
6
5
SPX2945
8-Pin Surface Mount (S)
Top View
SPX2945
1
3
2
SOT-223 (M3)
V
OUT
SENSE
SHUTDOWN
GND
V
IN
FEEDBACK
5V/ 3.3V TAP
ERROR
V
IN
GNDV
OUT
相關(guān)PDF資料
PDF描述
SPX2947 500mA Low Drop Out Voltage Regulator with Shutdown（Output Programmable From 1.24V to 29V）(500mA，低壓差穩(wěn)壓器(帶關(guān)斷,可編程輸出從1.24V-29V))
SPX2946T3-3.3 500mA Low Drop Out Voltage Regulator with Shutdown
SPX2946S-3.3 500mA Low Drop Out Voltage Regulator with Shutdown
SPX2946S-5.0 500mA Low Drop Out Voltage Regulator with Shutdown
SPX2946U3-3.3 500mA Low Drop Out Voltage Regulator with Shutdown
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SPX2946S-3.3 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:500mA Low Drop Out Voltage Regulator with Shutdown
SPX2946S-5.0 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:500mA Low Drop Out Voltage Regulator with Shutdown
SPX2946T3-3.3 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:500mA Low Drop Out Voltage Regulator with Shutdown
SPX2946T3-5.0 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:500mA Low Drop Out Voltage Regulator with Shutdown
SPX2946T5-3.3 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:500mA Low Drop Out Voltage Regulator with Shutdown
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