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LM79M12  Product Folder

3-Terminal Negative Regulators
Generic P/N 79M12
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics		 Application
Notes

Parametric Table Parametric Table
Temperature Min (deg C) 0000000000.0000 
Temperature Max (deg C) 125 
Multiple Output Capability No 
On/Off Pin No 
Error Flag - 
InputMin Voltage (Volt) -35 
InputMax Voltage (Volt) -14.50 
Output Current (mA) 500 
Watchdog - 
RegType Linear Regulator 
Output Voltage (Volt) -12 

Datasheet

TitleSize in KbytesDate
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Download
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LM79MXX Series 3-Terminal Negative Regulators 211 Kbytes 6-Sep-01 View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LM79M12CTTO 2203StatusFull productionN/AN/A 
Buy Now 		1K+$0.33rail
of
45		NSUZXYTT
LM79M
12CT
3-5 weeks45000
LM79M12C MDAUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM79M12C MWAWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0

Obsolete Parts

Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM79M12CH
LM302H-12
NATIONAL SEMICONDUCTOR
03/08/94
LM79M12CP
LM79M12CT
NATIONAL SEMICONDUCTOR
07/15/95

General Description

The LM79MXX series of 3-terminal regulators is available with fixed output voltages of -5V, -12V, and -15V. These devices need only one external component-a compensation capacitor at the output. The LM79MXX series is packaged in the TO-220 power package, and is capable of supplying 0.5A of output current.

These regulators employ internal current limiting, safe area protection, and thermal shutdown for protection against virtually all overload conditions.

Low ground pin current of the LM79MXX series allows output voltage to be easily boosted above the preset value with a resistor divider. The low quiescent current of these devices with a specified maximum change with line and load ensures good regulation in the voltage boosted mode.

For output voltage other than -5V, -12V, and -15V the LM137 series provides an output voltage range from -1.2V to -57V.

Features

  • Thermal, short circuit and safe area protection
  • High ripple rejection
  • 0.5A output current
  • 4% tolerance on preset output voltage

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM79M12C MDASLM0350000015000003424108012
LM79M12C MWASLM0350000015000003424108012
LM79M12CTSLM0350000015000003424108012

For more information on Reliablitity Metrics, please click here.


Application Notes

TitleSize in KbytesDate
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AN-1148: Application Note 1148 Linear Regulators: Theory of Operation and Compensation 200 Kbytes 25-Sep-02 View Online Download Receive via Email
AN-1149: Application Note 1149 Layout Guidelines for Switching Power Supplies 113 Kbytes 26-Sep-02 View Online Download Receive via Email
AN-556: Application Note 556 Introduction to Power Supplies 159 Kbytes 25-Sep-02 View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 15-Jan-2004]

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