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부품번호 | SPX2957 기능 |
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기능 | 350mA Low Drop Out Voltage Regulator | ||
제조업체 | Sipex | ||
로고 | |||
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
SPX2955/56/57
UNREGULATED DC
7
+
FEEDBACK
8
INPUT
1
OUTPUT
FROM
CMOS OR
TTL
3
SHUTDOWN
+
_ ERROR
AMPLIFIER
180k Ω ..
60 mV
+
+ 1.23V
+
_
60k Ω ..
ERROR DETECTION
COMPARATOR
REFERENCE
SPX2955/56/57 Block Diagram
2
SENSE
6
5V TAP
5
______
ERROR
4
GROUND
5V @ 350mA
MAX
330k Ω ..
+
1 µ F..
TO CMOS OR
TTL
Rev. 11/21/00
4페이지 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
7페이지 | |||
구 성 | 총 9 페이지수 | ||
다운로드 | [ SPX2957.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
SPX2950 | 150mA Low Dropout Voltage Regulator | Sipex |
SPX29501 | 5A Low Dropout Voltage Regulator | Exar |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |