|
|
Part: LP2951CMMX
Category:
Power Management
-> Regulators
-> Linear Voltage Regulators
-> LDO (Low Drop Out)
-> Positive Voltage->Adjustable
Description: LP2951 - Series of Adjustable Micropower Voltage Regulators, Package: Soic Narrow, Pin Nb=8
Company: National Semiconductor Corporation
Datasheet: Download LP2951CMMX datasheet File size : 606 kB
Request For quote: Find where to buy LP2951CMMX
Datasheet text preview:
LP2950/LP2951 Series of Adjustable Micropower Voltage Regulators
May 2003
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 pincompatibility with older 5V regulators. The 8-lead LP2951 is available in plastic, ceramic dual-in-line, 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 (.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.
Features
n n n n n n n n n n n 5V, 3V, and 3.3V versions available High accuracy output voltage Guaranteed 100mA output current Extremely low quiescent current Low dropout voltage Extremely tight load and line regulation Very low temperature coefficient Use as Regulator or Reference Needs minimum capacitance for stability Current and Thermal Limiting Stable with low-ESR output capacitors
LP2951 versions only
n Error flag warns of output dropout n Logic-controlled electronic shutdown n Output programmable from 1.24 to 29V
Block Diagram and Typical Applications
LP2950 LP2951
00854625
00854601
© 2003 National Semiconductor Corporation
DS008546
www.national.com
LP2950/LP2951
Connection Diagrams
TO-92 Plastic Package (Z)
TO-252 (D-Pak)
00854602
Bottom View
00854670
Dual-In-Line Packages (N, J) Surface-Mount Package (M, MM)
Front View 8-Lead LLP
00854626
Top View Metal Can Package (H)
00854671
Pin 4 is fused to center DAP
Top View
00854619
Top View 10-Lead Ceramic Surface-Mount Package (WG)
00854664
Top View
www.national.com
2
LP2950/LP2951
Ordering Information
Package TO-92 (Z) Temperature Range -40 < TJ < 125 Part Number LP2950ACZ-3.0 LP2950CZ-3.0 LP2950ACZ-3.3 LP2950CZ-3.3 LP2950ACZ-5.0 LP2950CZ-5.0 TO-252 (D-Pak) -40 < TJ < 125 LP2950CDT-3.0 LP2950CDTX-3.0 LP2950CDT-3.3 LP2950CDTX-3.3 LP2950CDT-5.0 LP2950CDTX-5.0 N (N-08E) -40 < TJ < 125 LP2951ACN-3.0 LP2951CN-3.0 LP2951ACN-3.3 LP2951CN-3.3 LP2951ACN LP2951CN M (M08A) -40 < TJ < 125 LP2951ACM-3.0 LP2951ACMX-3.0 LP2951CM-3.0 LP2951CMX-3.0 LP2951ACM-3.3 LP2951ACMX-3.3 LP2951CM-3.3 LP2951CMX-3.3 LP2951ACM LP2951ACMX LP2951CM LP2951CMX MM (MUA08A) -40 < TJ < 125 LP2951ACMM-3.0 LP2951ACMMX-3.0 LP2951CMM-3.0 LP2951CMMX-3.0 LP2951ACMM-3.3 LP2951ACMMX-3.3 LP2951CMM-3.3 LP2951CMMX-3.3 LP2951ACMM LP2951ACMMX LP2951CMM LP2951CMMX J (J08A) H (H08C) WG (WG10A) -55 < TJ < 150 -55 < TJ < 150 -55 < TJ < 150 LP2951J/883 LP2951H/883 LP2951WG/883 See MIL/AERO Datasheet See MIL/AERO Datasheet See MIL/AERO Datasheet L0DB L0DA L0CB L0CA L0BB L0BA 2951CMDD 2951ACMDD 2951CM33DD 2951ACM33DD 2951CM30DD LP2951ACN-3.0 LP2951CN-3.0 LP2951ACN-3.3 LP2951CN-3.3 LP2951ACN LP2951CN 2951ACM30DD LP2950CDT-5.0 LP2950CDT-3.3 Package Marking 2950A CZ3.0 2950 CZ3.0 2950A CZ3.3 2950 CZ3.3 2950A CZ5.0 2950 CZ5.0 LP2950CDT-3.0 Transport Media Bag Bag Bag Bag Bag Bag 75 Units/Rail 2.5k Units Tape and Reel 75 Units/Rail 2.5k Units Tape and Reel 75 Units/Rail 2.5k Units Tape and Reel 40 Units/Rail 40 Units/Rail 40 Units/Rail 40 Units/Rail 40 Units/Rail 40 Units/Rail 95 Units/Rail 2.5k Units Tape and Reel 95 Units/Rail 2.5k Units Tape and Reel 95 Units/Rail 2.5k Units Tape and Reel 95 Units/Rail 2.5k Units Tape and Reel 95 Units/Rail 2.5k Units Tape and Reel 95 Units/Rail 2.5k Units Tape and Reel 1k Units Tape and Reel 3.5k Units Tape and Reel 1k Units Tape and Reel 3.5k Units Tape and Reel 1k Units Tape and Reel 3.5k Units Tape and Reel 1k Units Tape and Reel 3.5k Units Tape and Reel 1k Units Tape and Reel 3.5k Units Tape and Reel 1k Units Tape and Reel 3.5k Units Tape and Reel 40 Units/Rail Tray Tray J08A H08C WG10A MUA08A M08A N08E TD03B NSC Drawing Z03A
3
www.national.com
LP2950/LP2951
Ordering Information
Package 8-lead LLP Temperature Range -40 < TJ < 125
(Continued) Part Number LP2951ACLD-3.0 LP2951ACLDX-3.0 LP2951CLD-3.0 LP2951CLDX-3.0 LP2951ACLD-3.3 LP2951ACLDX-3.3 LP2951CLD-3.3 LP2951CLDX-3.3 LP2951ACLD-5.0 LP2951ACLDX-5.0 LP2951CLD-5.0 LP2951CLDX-5.0 L027B L027A L003B L003A L002B Package Marking L002A Transport Media 1k Units Tape and Reel 4.5k Units Tape and Reel 1k Units Tape and Reel 4.5k Units Tape and Reel 1k Units Tape and Reel 4.5k Units Tape and Reel 1k Units Tape and Reel 4.5k Units Tape and Reel 1k Units Tape and Reel 4.5k Units Tape and Reel 1k Units Tape and Reel 4.5k Units Tape and Reel NSC Drawing LDA08A
www.national.com
4
LP2950/LP2951
Absolute Maximum Ratings
(Note 1)
ESD Rating Human Body Model(Note 18) 2500V
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 (TJ) Ambient Storage Temperature Soldering Dwell Time, Temperature Wave Infrared Vapor Phase Internally Limited +150°C -65° to +150°C 4 seconds, 260°C 10 seconds, 240°C 75 seconds, 219°C -1.5 to +30V -0.3 to +30V
Operating Ratings (Note 1)
Maximum Input Supply Voltage Junction Temperature Range (TJ) (Note 8) LP2951 LP2950AC-XX, LP2950C-XX, LP2951AC-XX, LP2951C-XX -55° to +150°C -40° to +125°C 30V
Electrical Characteristics (Note 2)
LP2951 Parameter Conditions (Note 2) Tested Typ Limit (Notes 3, 16) 3V Versions (Note 17) Output Voltage TJ = 25°C -25°C TJ 85°C Full Operating Temperature Range Output Voltage 100µA IL 100mA TJ TJMAX 3.3V Versions (Note 17) Output Voltage TJ = 25°C -25°C TJ 85°C Full Operating Temperature Range Output Voltage 5V Versions (Note 17) Output Voltage TJ = 25°C -25°C TJ 85°C Full Operating Temperature Range Output Voltage 100µA IL 100mA TJ TJMAX 5.0 5.0 5.0 5.0 5.06 4.94 5.075 4.925 5.0 5.025 4.975 5.0 5.0 5.0 5.025 4.975 5.05 4.95 5.06 4.94 5.075 4.925 5.0 5.0 5.0 5.0 5.05 4.95 5.075 4.925 5.1 4.9 5.12 4.88 V max V min V max V min V max V min V max V min 100µA IL 100mA TJ TJMAX 3.3 3.3 3.3 3.3 3.340 3.260 3.350 3.251 3.3 3.317 3.284 3.3 3.3 3.3 3.317 3.284 3.333 3.267 3.340 3.260 3.346 3.254 3.3 3.3 3.3 3.3 3.333 3.267 3.350 3.251 3.366 3.234 3.379 3.221 V max V min V max V min V max V min V max V min 3.0 3.0 3.0 3.0 3.036 2.964 3.045 2.955 3.0 3.015 2.985 3.0 3.0 3.0 3.015 2.985 3.030 2.970 3.036 2.964 3.042 2.958 3.0 3.0 3.0 3.0 3.030 2.970 3.045 2.955 3.060 2.940 3.072 2.928 V max V min V max V min V max V min V max V min Typ LP2950AC-XX LP2951AC-XX Tested Limit Design Limit Typ LP2950C-XX LP2951C-XX Tested Limit Design Limit Units
(Note 3) (Note 4)
(Note 3) (Note 4)
5
www.national.com
Others parts begin by lp
LP-1 LP-2 LP-3 LP-4 LP-5 LP-6 LP-7 LP-8 LP-9 LP-10 LP-11 LP-12 LP-13 LP-14 LP-15 LP-16 LP-17 LP-18 LP-19 LP-20
|
|
|
