LP2951ACN/NOPB National Semiconductor, LP2951ACN/NOPB Datasheet

IC VREG ADJ MICRPWR 8-DIP

LP2951ACN/NOPB

Manufacturer Part Number
LP2951ACN/NOPB
Description
IC VREG ADJ MICRPWR 8-DIP
Manufacturer
National Semiconductor
Type
Voltage Regulatorr
Datasheets

Specifications of LP2951ACN/NOPB

Regulator Topology
Positive Adjustable
Voltage - Output
1.24 ~ 29 V
Voltage - Input
Up to 30V
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)
Current, Input Bias
20 nA
Current, Output
100 mA
Current, Supply
75 μA
Package Type
DIP-8
Regulation, Line
0.03 %
Regulation, Load
0.04 %
Regulator Type
Low Dropout
Temperature, Operating, Range
-40 to +125 °C
Voltage, Dropout
380 mV
Voltage, Input
30 V
Voltage, Noise
430 μV
Voltage, Output
5 V
Primary Input Voltage
30V
Output Voltage Adjustable Range
1.24V To 29V
Dropout Voltage Vdo
380mV
No. Of Pins
8
Output Current
100mA
Operating Temperature Range
-40°C To +125°C
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
Other names
*LP2951ACN
*LP2951ACN/NOPB
LP2951ACN
© 2005 National Semiconductor Corporation
LP2950/LP2951
Series of Adjustable Micropower Voltage Regulators
General Description
The LP2950 and LP2951 are micropower voltage regulators
with very low quiescent current (75µA typ.) and very low
dropout voltage (typ. 40mV at light loads and 380mV at
100mA). They are ideally suited for use in battery-powered
systems. Furthermore, the quiescent current of the LP2950/
LP2951 increases only slightly in dropout, prolonging battery
life.
The LP2950-5.0 is available in the surface-mount D-Pak
package, and in the popular 3-pin TO-92 package for pin-
compatibility with older 5V regulators. The 8-lead LP2951 is
available in plastic, ceramic dual-in-line, LLP, or metal can
packages and offers additional system functions.
One such feature is an error flag output which warns of a low
output voltage, often due to falling batteries on the input. It
may be used for a power-on reset. A second feature is the
logic-compatible shutdown input which enables the regulator
to be switched on and off. Also, the part may be pin-strapped
for a 5V, 3V, or 3.3V output (depending on the version), or
programmed from 1.24V to 29V with an external pair of
resistors.
Careful design of the LP2950/LP2951 has minimized all
contributions to the error budget. This includes a tight initial
tolerance (.5% typ.), extremely good load and line regulation
Block Diagram and Typical Applications
LP2950
DS008546
00854625
(.05% typ.) and a very low output voltage temperature coef-
ficient, making the part useful as a low-power voltage refer-
ence.
Features
n 5V, 3V, and 3.3V versions available
n High accuracy output voltage
n Guaranteed 100mA output current
n Extremely low quiescent current
n Low dropout voltage
n Extremely tight load and line regulation
n Very low temperature coefficient
n Use as Regulator or Reference
n Needs minimum capacitance for stability
n Current and Thermal Limiting
n Stable with low-ESR output capacitors (10mΩ to 6Ω)
LP2951 versions only
n Error flag warns of output dropout
n Logic-controlled electronic shutdown
n Output programmable from 1.24 to 29V
LP2951
00854601

Related parts for LP2951ACN/NOPB

LP2951ACN/NOPB Summary of contents

Page 1

... This includes a tight initial tolerance (.5% typ.), extremely good load and line regulation Block Diagram and Typical Applications LP2950 © 2005 National Semiconductor Corporation (.05% typ.) and a very low output voltage temperature coef- ficient, making the part useful as a low-power voltage refer- ence. ...

Page 2

Ordering Information Package Temperature Part Number Range < < TO-92 (Z) −40 T 125 LP2950ACZ-3.0 J LP2950CZ-3.0 LP2950ACZ-3.3 LP2950CZ-3.3 LP2950ACZ-5.0 LP2950CZ-5.0 < < TO-252 −40 T 125 LP2950CDT-3.0 J (D-Pak) LP2950CDTX-3.0 LP2950CDT-3.3 LP2950CDTX-3.3 LP2950CDT-5.0 LP2950CDTX-5.0 < < N (N-08E) −40 ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Supply Voltage SHUTDOWN Input Voltage, Error Comparator Output Voltage, (Note 9) FEEDBACK Input Voltage (Note 9) (Note 10) Power Dissipation Junction Temperature ( Ambient Storage Temperature ...

Page 4

Electrical Characteristics Conditions Parameter (Note 2) Temperature Range 100µA ≤ I ≤ Output Voltage L 100mA ≤ JMAX All Voltage Options Output Voltage (Note 12) Temperature Coefficient NOM + 1)V ≤ Line Regulation (V O ≤ 30V ...

Page 5

Electrical Characteristics Conditions Parameter (Note 2) All Voltage Options Temperature Coefficient Feedback Pin Bias Current Temperature Coefficient Error Comparator Output Leakage V = 30V OH Current Output Low NOM − 0.5)V Voltage I = 400µA ...

Page 6

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Ceramic Dual-In-Line Package (J) NS Package Number J08A Surface Mount Package (M) NS Package Number M08A 23 ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Molded Dual-In-Line Package (N) NS Package Number N08E Molded TO-92 Package (Z) NS Package Number Z03A 24 ...

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