MIC2950-05BZ TR Micrel Inc, MIC2950-05BZ TR Datasheet

IC REG LDO 150MA TO-92-3

MIC2950-05BZ TR

Manufacturer Part Number
MIC2950-05BZ TR
Description
IC REG LDO 150MA TO-92-3
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC2950-05BZ TR

Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
Up to 30V
Voltage - Dropout (typical)
0.3V @ 150mA
Number Of Regulators
1
Current - Output
150mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-92-3 (Standard Body), TO-226
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Limit (min)
-
Other names
MIC2950-05BZTR
MIC2950-05BZTR
General Description
The MIC2950 and MIC2951 are “bulletproof” micropower
voltage regulators with very low dropout voltage (typically
40mV at light loads and 250mV at 100mA), and very low
quiescent current. Like their predecessors, the LP2950 and
LP2951, the quiescent current of the MIC2950/MIC2951
increases only slightly in dropout, thus pro-longing battery
life. The MIC2950/MIC2951 are pin for pin compatible with
the LP2950/LP2951, but offer lower dropout, lower
quiescent current, reverse battery, and automotive load
dump protection.
The key additional features and protection offered include
higher output current (150mA), positive transient protection
for up to 60V (load dump), and the ability to survive an
unregulated input voltage transient of –20V below ground
(reverse battery).
The plastic DIP and SOIC versions offer additional system
functions such as programmable output voltage and logic
controlled shutdown. The 3-pin TO-92 MIC2950 is pin-
compatible with the older 5V regulators.
These system functions 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 5 V output, or
programmed from 1.24 V to 29 V with the use of two
external resistors.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
___________________________________________________________________________________________________________
Block Diagram
* MIC2950 Discontinuance September 2007.
MM8 is a registered trademark of Micrel, Inc.
February 2010
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
Features
• High accuracy 3.3, 4.85, or 5V, guaranteed 150mA
• Extremely low quiescent current
• Low-dropout voltage
• Extremely tight load and line regulation
• Very low temperature coefficient
• Use as regulator or reference
• Needs only 1.5µF for stability
• Current and thermal limiting
• Unregulated DC input can withstand –20V reverse
MIC2951 Version Only
• Error flag warns of output dropout
• Logic-controlled electronic shutdown
• Output programmable from 1.24 to 29V
Applications
• Automotive electronics
• Voltage reference
• Avionics
• Cellular telephones
• Battery powered equipment
• SMPS post-regulator
• High efficiency linear power supplies
408
output
battery and +60V positive transients
150mA Low-Dropout Voltage Regulator
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
MIC2950*/2951
M9999-021610

Related parts for MIC2950-05BZ TR

MIC2950-05BZ TR Summary of contents

Page 1

... Like their predecessors, the LP2950 and LP2951, the quiescent current of the MIC2950/MIC2951 increases only slightly in dropout, thus pro-longing battery life. The MIC2950/MIC2951 are pin for pin compatible with the LP2950/LP2951, but offer lower dropout, lower quiescent current, reverse battery, and automotive load dump protection ...

Page 2

... Micrel, Inc. The MIC2950 is available as either an -05 or -06 version. The -05 and -06 versions are guaranteed for junction temperatures from –40°C to +125°C; the -05 version has a tighter output and reference voltage specification range over temperature. The MIC2951 is available as an -02 or -03 version. ...

Page 3

... Tap: Output of internal voltage divider when the regulator is configured for fixed operation. Not used in adjustable configuration. FB Feedback (Input): 1.235V feedback from internal voltage divider’s TAP (for fixed operation) or external resistor network (adjustable configuration). IN Unregulated Supply Input. 3 MIC2950/2951 ® DIP (N), SOIC (M), MM8 (MM) (Top View) M9999-021610 ...

Page 4

... T J ≤ 150mA ≤ 150mA ≤ 150mA ≤ 150mA (2) )................................+2.0 to +30V IN ( MIC2950-05/MIC2950-06 ................... –40°C to +125°C MIC2951-02/MIC2950-03 ................... –40°C to +125°C ≤ +125°C; Note 8; unless noted. J Min Typ 4.975 5.000 4.950 5.000 3.267 3.300 4.802 4.850 4.950 4.925 3.251 4 ...

Page 5

... L = 150mA, Note 100µ 100mA L = 150mA L = 100µ 100mA L = 150mA L = 100µ 100mA L = 150mA L = 4.5V 100µ 3.0V 100µ 4.3V 100µ MIC2950/2951 Min Typ Max Units 0.04 0. 0.20 0.10 0. 0.30 0.10 0. 0.30 0. 140 250 300 mV 300 450 ...

Page 6

... Upper Threshold Voltage Error Comparator Note 15 Lower Threshold Voltage Error Comparator Hysteresis Note 15 February 2010 = 0V = 1.5µ 200µ 3.3µ 30V = 4.5V 200µ MIC2950/2951 Min Typ Max Units 300 400 mA mA 450 0.05 0.20 %/W 430 µV RMS 160 µV RMS 100 µ ...

Page 7

... Max 1.3 2.0 1.3 2.0 1.3 2.0 1.3 2.0 30 100 450 600 750 3 = 5V) and V ≤ 0.8V. OUT SHDN = 125°C, line regulation is guaranteed by design to 0.2 (R1 + R2)/R2. For example OUT REF MIC2950/2951 Units µA µA µA µA 10 µA µ ...

Page 8

... Micrel, Inc. Typical Characteristics February 2010 8 MIC2950/2951 M9999-021610 ...

Page 9

... Micrel, Inc. Typical Characteristics (continued) February 2010 9 MIC2950/2951 M9999-021610 ...

Page 10

... Micrel, Inc. Typical Characteristics (continued) February 2010 10 MIC2950/2951 M9999-021610 ...

Page 11

... For the worst-case situation of a 150mA load at 1.23V output (Output shorted to Feedback) a 5µF (or greater) capacitor should be used. The MIC2950 will remain stable and in regulation with no load in addition to the internal voltage divider, unlike many other voltage regulators. This is especially important in CMOS RAM keep-alive applications ...

Page 12

... This is the only method by which noise can be reduced on the 3 lead MIC2950 and is relatively inefficient, as increasing the capacitor from 1µF to 220µF only decreases the noise from 430µV to 160µV rms for a 100kHz bandwidth at 5V output ...

Page 13

... Micrel, Inc. Typical Applications 5V Regulator with 2.5V Sleep Function Low Drift Current Source February 2010 Wide Input Voltage Range Current Limiter 5V Current Limiter 13 MIC2950/2951 M9999-021610 ...

Page 14

... Micrel, Inc. Typical Applications February 2010 Regulator with Early Warning and Auxiliary Output 14 MIC2950/2951 M9999-021610 ...

Page 15

... Micrel, Inc. Typical Applications Latch Off When Error Flag Occurs February 2010 Open Circuit Detector for 4mA to 20mA Current Loop Regulator with State-of-Charge Indicator 15 MIC2950/2951 M9999-021610 ...

Page 16

... Micrel, Inc. Typical Applications February 2010 Low Battery Disconnect System Over Temperature Protection Circuit 16 MIC2950/2951 M9999-021610 ...

Page 17

... Micrel, Inc. Schematic Diagram February 2010 17 MIC2950/2951 M9999-021610 ...

Page 18

... February 2010 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) 18 MIC2950/2951 0.255 (6.48) 0.245 (6.22) 0.300 (7.62) 0.013 (0.330) 0.010 (0.254) M9999-021610 ...

Page 19

... Micrel, Inc. February 2010 8-Pin MSOP (MM) 19 MIC2950/2951 M9999-021610 ...

Page 20

... TO-92 (Z) indemnify Micrel for any damages resulting from such use or sale. © 1999 Micrel, Incorporated. 20 0.145 (3.683) 0.135 (3.429) 5° t yp. 5° typ. 0.0155 (0.3937 ) 0.0145 (0.3683 ) MIC2950/2951 M9999-021610 ...

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