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SPX2957 데이터시트 PDF




Sipex에서 제조한 전자 부품 SPX2957은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 SPX2957 자료 제공

부품번호 SPX2957 기능
기능 350mA Low Drop Out Voltage Regulator
제조업체 Sipex
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SPX2957 데이터시트, 핀배열, 회로
FEATURES
Output Accuracy 5V, 3.3V@ 350mA 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
SPX2955/56/57
350mA Low Drop Out Voltage Regulator
with Shutdown
(PRELIMINARY INFORMATION)
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
PRODUCT DESCRIPTION
The SPX2955/56/57 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 SPX2955/56/57 features very low quiescent current
(100µA Typ.) and very low dropout voltage. This includes a tight initial tolerance of 1% max and 2% max., and very low output
temperature coefficient, making the SPX2955/56/57 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 SPX2955/56/57 is
offered in 3-pin and 5-pin TO-220 package compatible with other 5 volt and adjustable regulators, in 8-Pin Plastic Dip SO-8 (same pin
out as SPX2951) and surface mount TO-263 packages.
The regulator output voltage (of the 8-pin package and 5-pin TO-220 & TO-263) may be pin-strapped for a 5V and 3.3V or
programmed from 1.24V to 29V with an external pair of resistors. Look for SPX2951 for 150mA and SPX2954 for 250mA
applications.
TO-263-5 Package
SPX2956/57
12 345
Top View
Five Lead Package Pin Functions:
SPX2956
SPX2957
1) ERROR
ADJUST
2) INPUT
SHUTDOWN
3) GND
GND
4) OUTPUT
INPUT
5) SHUTDOWN OUTPUT
PIN CONNECTIONS
TO-220-5 Package
SPX2956/57
8-Pin Surface Mount
OUTPUT
SENSE
SHUTDOWN
GROUND
18
2 ALPHA 7
3 SAPSX229935056
45
INPUT
FEEDBACK
5V/ 3.3V TAP
ERROR
Top View
1 2 345
Top View
TO-220-3 Package
3
2
1
Front View
VOUT
GND
VIN
TO-263-3 Package
SPX2955
Front View
3 VOUT
2 GND
1 V IN
Rev. 11/21/00




SPX2957 pdf, 반도체, 판매, 대치품
SPX2955/56/57
UNREGULATED DC
7
+
FEEDBACK
8
INPUT
1
OUTPUT
FROM
CMOS OR
TTL
3
SHUTDOWN
+
_ ERROR
AMPLIFIER
180k ..
60 mV
+
+ 1.23V
+
_
60k ..
ERROR DETECTION
COMPARATOR
REFERENCE
SPX2955/56/57 Block Diagram
2
SENSE
6
5V TAP
5
______
ERROR
4
GROUND
5V @ 350mA
MAX
330k ..
+
1 µ F..
TO CMOS OR
TTL
Rev. 11/21/00

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SPX2957 전자부품, 판매, 대치품
SPX2955/56/57
TYPICAL APPLICATIONS
+VIN
ERROR
OUTPUT
SHUTDOWN
INPUT
5 ______
ERROR
8
+VIN
1
VOUT
SPX2955/57
3
SD
GND
4
FB
7
*VOUT = VIN
*MINIMUM INPUT-OUTPUT VOLTAGE RANGES FROM 4mV TO 400mV.
DEPENDING ON LOAD CURRENT. CURRENT LIMIT IS TYPICALLY 160mA
Wide Input Voltage Range Current
+VIN
+VIN
VOUT
SPX2955
GND
4
*VOUT = 5V
+
10uF
SPX2955 FIXED +5V REGULATOR
Rev. 11/21/00

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