LP2951CMX Fairchild Semiconductor, LP2951CMX Datasheet

IC REG ADJ MICRO POWER 8-SOP

LP2951CMX

Manufacturer Part Number
LP2951CMX
Description
IC REG ADJ MICRO POWER 8-SOP
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of LP2951CMX

Regulator Topology
Positive Adjustable
Voltage - Output
1.26 ~ 28 V
Voltage - Input
Up to 30V
Number Of Regulators
1
Current - Output
100mA
Current - Limit (min)
110mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
30 V
Output Voltage
1.26 V to 28 V
Output Type
Adjustable
Dropout Voltage (max)
600 mV
Output Current
100 mA
Line Regulation
0.4 %
Load Regulation
0.3 %
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Reference Voltage
1.295 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Dropout (typical)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
LP2951CMXFS
LP2951CMXFS
LP2951CMXFSTR

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Features
• Low Quiescent Current
• Low Dropout Voltage
• Low Temperature Coefficient
• Tight Line and Load Regulation
• Guaranteed 100mA Output Current
• Internal Short Current & Thermal Limit
• Error Signals of Output Dropout (8 pin Versions only)
• External Shut Down ( 8-Pin Versions Only)
Internal Block Diagram
©2010 Fairchild Semiconductor Corporation
LP2951
Adjustable Micro Power Voltage Regulator
[3]
Description
The LP2951 is an adjustable micro power voltage regulator
suitable for use in battery-powered systems. This regulator
has various functions such as alarm which warns of a low
output voltage, often due to falling batteries on the input, the
external shutdown which enables the regulator to be
switched on and off, current and temperature limiting.
8-SOP
1
www.fairchildsemi.com
Rev. 1.0.3

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LP2951CMX Summary of contents

Page 1

... Internal Short Current & Thermal Limit • Error Signals of Output Dropout (8 pin Versions only) • External Shut Down ( 8-Pin Versions Only) Internal Block Diagram ©2010 Fairchild Semiconductor Corporation Description The LP2951 is an adjustable micro power voltage regulator suitable for use in battery-powered systems. This regulator ...

Page 2

LP2951 Absolute Maximum Ratings Parameter Input Supply Voltage Power Dissipation Thermal Resistance Junction-Air Storage Temperature Range Operating Junction Temperature Range 2 Symbol Value V -0 Internally Limited D θJA R 127.5 T -65 ~ +150 STG ...

Page 3

Electrical Characteristics (Refer to the test circuit 25°C, unless otherwise specified, ) Parameter ALL VOLTAGE OPTIONS Output Voltage Temperature Coefficient Line Regulation (Note2) Load Regulation (Note2) Dropout Voltage Ground Current Current Limit 8-PIN VERSIONS ONLY Reference Voltage ERROR ...

Page 4

LP2951 Typical Performance Characteristics 2.0 1.6 1.2 0.8 0.4 0.1 1 LOAD CURRENT(mA) Figure 1. Quiescent Current 250 5V OUTPUT 200 150 100 INPUT VOLTAGE(V) Figure 3. Input Current 5.06 5V OUTPUT 5.04 5.02 5.00 ...

Page 5

Typical Performance Characteristics T YPICAL PERFORMANCE CHARACTERISTICS (Continued ) Fig. 7 Dropout Voltage 600 500 400 300 200 100 0 -50 - TEMPERATURE( Figure 7. Dropout Voltage (Continued) 500 I = 100mA L 400 300 200 = ...

Page 6

LP2951 Typical Application ERROR SHUTDOWN CO is required between the output and ground for stability at output voltages more. since IFB is controlled to less than 40nA, the error associated with this term is negligible in most ...

Page 7

Mechanical Dimension Package #1 #4 0.156 0.50 ±0.20 ±0.008 0.020 8-SOP ±0.20 1.55 0.061 ±0.008 #8 #5 6.00 ±0.30 1.80 MAX ±0.012 0.236 0.071 3.95 ±0.20 ±0.008 5.72 0.225 Dimensions in millimeters 0.1~0.25 MIN 0.004~0.001 LP2951 7 ...

Page 8

... Product Number LP2951CM DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...

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