LP3990MF-1.2 NSC [National Semiconductor], LP3990MF-1.2 Datasheet
LP3990MF-1.2
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LP3990MF-1.2 Summary of contents
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LP3990 150mA Linear Voltage Regulator for Digital Applications General Description The LP3990 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low noise, and low quiescent current. The LP3990 will provide a 0.8V ...
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Pin Descriptions Pin No micro LLP SMD SOT23 Pad Connection Diagrams www.national.com Packages Symbol Name and Function Enable Input; Enables the Regulator when ≥ 0.95V. ...
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Connection Diagrams (Continued) SOT23 - 5 Package (MF) 20076808 See NS package number MF05A 3 www.national.com ...
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... LP3990SD-1.8 LP3990SDX-1.8 LP3990SD-2.5 LP3990SDX-2.5 LP3990SD-2.8 LP3990SDX-2.8 LP3990SD-3.3 LP3990SDX-3.3 For SOT23 - 5 Package LP3990 Supplied as 1000 LP3990 Supplied as 3000 Units, Tape and Reel Units, Tape and Reel LP3990MF-0.8 LP3990MFX-0.8 LP3990MF-1.2 LP3990MFX-1.2 LP3990MF-1.35 LP3990MFX-1.35 LP3990MF-1.5 LP3990MFX-1.5 LP3990MF-1.8 LP3990MFX-1.8 LP3990MF-2.5 LP3990MFX-2.5 LP3990MF-2.8 LP3990MFX-2.8 LP3990MF-3.3 LP3990MFX-3.3 4 ...
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Absolute Maximum Ratings (Notes Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage Output Voltage Enable Input Voltage Junction Temperature Lead/Pad Temp. (Note 3) LLP/SOT23 micro SMD ...
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Electrical Characteristics Unless otherwise noted, V =950mV µF. Typical values and limits appearing in normal type apply for T full junction temperature range for operation, −40 to +125˚C. (Note 13) Symbol Parameter e Output noise Voltage (Note 10) ...
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Output Capacitor, Recommended Specifications Note 15: The capacitor tolerance should be 30% or better over temperature. The full operating conditions for the application should be considered when selecting a suitable capacitor to ensure that the minimum value of capacitance is ...
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Typical Performance Characteristics. 0.47 µF Ceramic OUT(NOM) Ground Current Short Circuit Current Power Supply Rejection Ratio www.national.com Unless otherwise specified 1.0V 25˚ 1.5V , Shutdown ...
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Typical Performance Characteristics. 0.47 µF Ceramic 1.0V OUT(NOM) Enable Start-up Time Load Transient Unless otherwise specified 25˚ 1.5V , Shutdown pin is tied OUT(NOM) 20076821 20076825 9 ...
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Application Hints EXTERNAL CAPACITORS In common with most regulators, the LP3990 requires exter- nal capacitors for regulator stability. The LP3990 is specifi- cally designed for portable applications requiring minimum board space and smallest components. These capacitors must be correctly selected ...
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Application Hints (Continued) tantalum will increase about 2:1 as the temperature goes from 25˚C down to -40˚C, so some guard band must be allowed. ENABLE CONTROL The LP3990 features an active high Enable pin, V turns the device on when ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted micro SMD, 4 Bump, Package (TLA04) NS Package Number TLA04ALA The dimensions for X1, X2 and X3 are given as 1.003 +/− 0.03mm X2 = 1.283 +/− 0.03mm X3 = ...
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued) National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry ...