LP2951-02BN Micrel Inc, LP2951-02BN Datasheet

IC REG LDO 100MA 8-DIP

LP2951-02BN

Manufacturer Part Number
LP2951-02BN
Description
IC REG LDO 100MA 8-DIP
Manufacturer
Micrel Inc
Datasheet

Specifications of LP2951-02BN

Regulator Topology
Positive Adjustable
Voltage - Output
1.24 ~ 29 V
Voltage - Input
2.3 ~ 30 V
Voltage - Dropout (typical)
0.38V @ 100mA
Number Of Regulators
1
Current - Output
100mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Limit (min)
-
General Description
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 pin-
compatible with the older 5V regulators. Additional system
functions, such as programmable output voltage and logic-
controlled shutdown, are available in the 8-pin DIP and 8-
pin SOIC versions of the LP2951.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
___________________________________________________________________________________________________________
Block Diagram
* LP2950 Discontinuance September 2007.
September 2008
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
LP2590 and LP2951 Block Diagram
(Pin Numbers Refer to LP2591)
Features
• 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 1.24 to 29V
Applications
• Automotive electronics
• Voltage reference
• Avionics
408
100mA Low-Dropout Voltage Regulator
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
LP2950*/2951
M9999-091208

Related parts for LP2951-02BN

LP2951-02BN Summary of contents

Page 1

... 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 ...

Page 2

... Ordering Information Part Number Voltage LP2950-02BZ* 5.0V LP2950-03BZ* 5.0V LP2951-02BM 5.0V LP2951-03BM 5.0V LP2951-02BN 5.0V LP2951-03BN** 5.0V LP2951-02YM 5.0V LP2951-03YM 5.0V LP2951-02YN 5.0V Note: * TO-92 Package discontinuance notification issued September 2007. End-of-life-buy offer thru December 31, 2007. Contact factory for additional information. ...

Page 3

... Line Regulation LP295x-02 (±0.5%), Notes 14, 15 LP295x-03 (±1%), Notes 14, 15 LP2951-4.8 (±1%), Notes 14, 15 LP295x-02 (±0.5%), Note 14, 100µA ≤ I Load Regulation LP295x-03 (±1%), Note 14, 100µA ≤ I LP2951-4.8 (±1%), Note 14, 100µA ≤ I September 2008 (1) (8) (9) .................–0.3 to +30V (1) ≤ 100mA ≤ ...

Page 4

... LP2951-4.8 (±1%) Reference Voltage LP295x-02 (±0.5%), Note 7 LP295x-03 (±1%), Note 7 LP2951-4.8 (±1%), Note 7 Feedback Bias Current Reference Voltage LP295x-02 (±0.5%), Note 12 LP295x-03 (±1%), Note 12 LP2951-4.8 (±1%), Note 12 Feedback Bias Current Temperature Coefficient Output Leakage Current V OH Output Low Voltage (Flag Upper Threshold Voltage ...

Page 5

... Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered in the specification for thermal regulation. 15. Line regulation for the LP2951 is tested at 150°C for I Typical Performance Characteristics for line regulation versus temperature and load current. ...

Page 6

Micrel, Inc. Typical Characteristics September 2008 6 LP2950/2951 M9999-091208 ...

Page 7

Micrel, Inc. Typical Characteristics (continued) September 2008 7 LP2950/2951 M9999-091208 ...

Page 8

Micrel, Inc. Typical Characteristics (continued) September 2008 8 LP2950/2951 M9999-091208 ...

Page 9

... A 0.1µF capacitor should LP2950/LP2951 input to ground if there is more than 10 inches of wire between the input and the AC filter capacitor battery is used as the input. Stray capacitance to the LP2951 Feedback terminal (pin 7) can cause instability. This may especially be a problem when using high value external resistors to set the output voltage ...

Page 10

Micrel, Inc. Noise can be reduced fourfold by a bypass capacitor across R , since it reduces the high frequency gain from unity. Pick: 1 ≅ C BYPASS π • 200Hz 1 or about 0.01µF. ...

Page 11

Micrel, Inc. Typical Applications Wide Input Voltage Range Current Limiter Low Drift Current Source September 2008 5V Regulator with 2.5V Sleep Function 5V Current Limiter 11 LP2950/2951 M9999-091208 ...

Page 12

Micrel, Inc. Typical Applications September 2008 Regulator with Early Warning and Auxiliary Output 12 LP2950/2951 M9999-091208 ...

Page 13

Micrel, Inc. Typical Applications Latch Off When Error Flag Occurs September 2008 Open Circuit Detector for 4mA to 20mA Current Loop Regulator with State-of-Charge Indicator 13 LP2950/2951 M9999-091208 ...

Page 14

Micrel, Inc. Typical Applications September 2008 Low Battery Disconnect System Over Temperature Protection Circuit 14 LP2950/2951 M9999-091208 ...

Page 15

Micrel, Inc. Schematic Diagram September 2008 15 LP2950/2951 M9999-091208 ...

Page 16

Micrel, Inc. Package Information 0.018 (0.57) September 2008 8-Pin SOIC (M) PIN 1 DIMENSIONS: INCH (MM) 0.380 (9.65) 0.370 (9.40) 0.135 (3.43) 0.125 (3.18) 0.380 (9.65) 0.130 (3.30) 0.320 (8.13) 0.100 (2.54) 0.0375 (0.952) 8-Pin Plastic DIP (N) 16 LP2950/2951 ...

Page 17

Micrel, Inc. 0.090 (2.286) Radius, t yp. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this data sheet is believed to be ...

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