SPX2975N-5.0 Просмотр технического описания (PDF) - Signal Processing Technologies
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SPX2975N-5.0 Datasheet PDF : 10 Pages
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SPX2975
180 mA Low Dropout Voltage Regulators
FEATURES
• 3.0V, 3.3V and 5.0V Fixed Output Voltages
• Very Low Quiescent Current
• Low Dropout Voltage
• Extremely Tight Load And Line Regulation
• Very Low Temperature Coefficient
• Needs Only 1µF For Stability
• Current & Thermal Limiting
• Unregulated DC Input Can Withstand -20V Reverse Battery
And +60V Positive Transients
• Similar Replacement For LP2950/LP2951 Sockets
SPX2975 SO-8 versions only
• Error Flag Warns Of Output Dropout
• Logic- Controlled Electronic Shutdown
• Output Programmable from 1.24 to 29V
APPLICATIONS
• Battery Powered Systems
• Cordless Telephones
• Radio Control Systems
• Portable/Palm Top/Notebook Computers
• Portable Consumer Equipment
• Portable Instrumentation
• Avionics
• Automotive Electronics
• SMPS Post-Regulator
• Voltage Reference
PRODUCT DESCRIPTION
The SPX2975 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 SPX2975 features very low quiescent current and very low
dropout voltage (Typ. 50mV at light load and 380 mV at 180 mA). This includes a tight initial tolerance of 0.5% typ., extremely good
load and line regulation 0.05% typ. and very low output temperature coefficient, making the SPX2975 useful as a low-power voltage
reference. Other additional key features include higher output current (150mA), positive transient protection up to 60V (Load dump),
and the ability to survive an unregulated input voltage transient of -20V below ground (reverse battery).
The error flag output feature is used as power-on reset for warning of a low output voltage, due to falling voltage input of batteries.
Another feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. The SPX2975 is
offered in a 3-pin TO-92 package compatible with other 5V regulators. The SPX2975 is available in 8-pin plastic, SO-8 packages.
PIN CONNECTIONS
8-Pin Surface Mount (S)
TO-92 (N)
VOUT
SENSE
SHUTDOWN
GND
1
8
2
7
SPX2975
3
6
4
5
Top View
VIN
FEEDBACK
5V TAP
ERROR
1 23
VIN
VOUT
GND
Bottom View
Rev. 10/30/00
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