LP2950-02BZ

LP2950-02BZ Datasheet

LP2950*/2951

Part	Datasheet
LP2950-02BZ	LP2950-02BZ (pdf)

Related Parts	Information
LP2950-03BZ	LP2950-03BZ
LP2950-02BZ TR	LP2950-02BZ TR
LP2950-03BZ TR	LP2950-03BZ TR

PDF Datasheet Preview
LP2950/2951 100mA Low-Dropout Voltage Regulator The LP2950 and LP2951 are micropower voltage regulators with very low dropout voltage typically 40mV at light loads and 380mV at 100mA , and very low quiescent current 75A typical . The quiescent current of the LP2950 /LP2951 increases only slightly in dropout, thus prolonging battery life. This feature, among others, makes the LP2950 and LP2951 ideally suited for use in battery-powered systems. Available in a 3-pin TO-92 package, the LP2950 is pincompatible with the older 5V regulators. Additional system functions, such as programmable output voltage and logiccontrolled shutdown, are available in the 8-pin DIP and 8pin SOIC versions of the LP2951. Data sheets and support documentation can be found on Micrel’s web site at: • High accuracy 5V, guaranteed 100mA output • Extremely low quiescent current • Low-dropout voltage • Extremely tight load and line regulation • Very low temperature coefficient • Use as regulator or reference • Needs only 1µF for stability LP2951 Versions Only • Current and thermal limiting • Error flag warns of output dropout • Logic-controlled electronic shutdown • Output programmable from to 29V • Automotive electronics • Voltage reference • Avionics Block Diagram LP2590 and LP2951 Block Diagram Pin Numbers Refer to LP2591 LP2950 Discontinuance September Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 408 944-0800 • fax + 1 408 474-1000 • September 2008 M9999-091208 Micrel, Inc. LP2950/2951 Additional features available with the LP2951 also include an error flag output that warns of a low output voltage, which is often due to failing batteries on the input. This may also be used as a power-on reset. A logic-compatible shutdown input is also available which enables the regulator to be switched on and off. This part may also be pin-strapped for a 5V output, or programmed from 1.24V to 29V with the use of two external resistors. The LP2950 is available as either a -02 or -03 version. The -02 and -03 versions are guaranteed for junction temperatures from to +125°C the -02 version has a tighter output and reference voltage specification range over temperature. The LP2951 is available as an -02 or -03 version. The LP2950 and LP2951 have a tight initial tolerance typical , a very low output voltage temperature coefficient which allows use as a low-power voltage reference, and extremely good load and line regulation typical . This greatly reduces the error in the overall circuit, and is the result of careful design techniques and process control. Ordering Information Voltage Accuracy Junction Temperature Range Package Lead Finish LP2950-02BZ* 5.0V to +125°C 3-Pin TO-92 Plastic Standard LP2950-03BZ* 5.0V to +125°C 3-Pin TO-92 Plastic Standard LP2951-02BM 5.0V to +125°C 8-Pin SOIC Standard LP2951-03BM 5.0V to +125°C 8-Pin SOIC Standard LP2951-02BN 5.0V to +125°C 8-Pin Plastic DIP Standard LP2951-03BN** 5.0V to +125°C 8-Pin Plastic DIP Standard LP2951-02YM 5.0V to +125°C 8-Pin SOIC Pb-Free

PDF Datasheet Preview

LP2950*/2951
100mA Low-Dropout Voltage Regulator

The LP2950 and LP2951 are micropower voltage regulators with very low dropout voltage typically 40mV at light loads and 380mV at 100mA , and very low quiescent current 75A typical . The quiescent current of the LP2950 /LP2951 increases only slightly in dropout, thus prolonging battery life. This feature, among others, makes the LP2950 and LP2951 ideally suited for use in battery-powered systems.

Available in a 3-pin TO-92 package, the LP2950 is pincompatible with the older 5V regulators. Additional system functions, such as programmable output voltage and logiccontrolled shutdown, are available in the 8-pin DIP and 8pin SOIC versions of the LP2951.

Data sheets and support documentation can be found on Micrel’s web site at:
• High accuracy 5V, guaranteed 100mA output
• Extremely low quiescent current
• Low-dropout voltage
• Extremely tight load and line regulation
• Very low temperature coefficient
• Use as regulator or reference
• Needs only 1µF for stability

LP2951 Versions Only
• Current and thermal limiting
• Error flag warns of output dropout
• Logic-controlled electronic shutdown
• Output programmable from to 29V
• Automotive electronics
• Voltage reference
• Avionics

Block Diagram

LP2590 and LP2951 Block Diagram Pin Numbers Refer to LP2591
* LP2950 Discontinuance September

Micrel Inc.
• 2180 Fortune Drive
• San Jose, CA 95131
• USA
• tel +1 408 944-0800
• fax + 1 408 474-1000
•

September 2008

M9999-091208

Micrel, Inc.

LP2950/2951

Additional features available with the LP2951 also include an error flag output that warns of a low output voltage, which is often due to failing batteries on the input. This may also be used as a power-on reset. A logic-compatible shutdown input is also available which enables the regulator to be switched on and off. This part may also be pin-strapped for a 5V output, or programmed from 1.24V to 29V with the use of two external resistors.

The LP2950 is available as either a -02 or -03 version. The -02 and -03 versions are guaranteed for junction
temperatures from to +125°C the -02 version has a tighter output and reference voltage specification range over temperature. The LP2951 is available as an -02 or -03 version.

The LP2950 and LP2951 have a tight initial tolerance typical , a very low output voltage temperature coefficient which allows use as a low-power voltage reference, and extremely good load and line regulation typical . This greatly reduces the error in the overall circuit, and is the result of careful design techniques and process control.
Ordering Information

Voltage Accuracy

Junction

Temperature Range

Package

Lead Finish

LP2950-02BZ*
5.0V
to +125°C
3-Pin TO-92 Plastic

Standard

LP2950-03BZ*
5.0V
to +125°C
3-Pin TO-92 Plastic

Standard

LP2951-02BM
5.0V
to +125°C
8-Pin SOIC

Standard

LP2951-03BM
5.0V
to +125°C
8-Pin SOIC

Standard

LP2951-02BN
5.0V
to +125°C
8-Pin Plastic DIP

Standard

LP2951-03BN**
5.0V
to +125°C
8-Pin Plastic DIP

Standard

LP2951-02YM
5.0V
to +125°C
8-Pin SOIC

Pb-Free

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived LP2950-02BZ Datasheet file may be downloaded here without warranties.

Datasheet ID: LP2950-02BZ 647888