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LM340

Motorola Inc
Part Number LM340
Manufacturer Motorola Inc
Description Three Terminal Positive Voltage Regulators
Published Mar 22, 2005
Detailed Description Order this document by LM340/D LM340, A Series Three-Terminal Positive Fixed Voltage Regulators This family of fixed vo...
Datasheet PDF File LM340 PDF File

LM340
LM340

Overview
Order this document by LM340/D LM340, A Series Three-Terminal Positive Fixed Voltage Regulators This family of fixed voltage regulators are monolithic integrated circuits capable of driving loads in excess of 1.
0 A.
These three–terminal regulators employ internal current limiting, thermal shutdown, and safe–area compensation.
Devices are available with improved specifications, including a 2% output voltage tolerance, on A–suffix 5.
0, 12 and 15 V device types.
Although designed primarily as a fixed voltage regulator, these devices can be used with external components to obtain adjustable voltages and currents.
This series of devices can be used with a series–pass transistor to boost output current capability at the nominal output voltage.
• Output Current in Excess of 1.
0 A THREE–TERMINAL POSITIVE FIXED VOLTAGE REGULATORS SEMICONDUCTOR TECHNICAL DATA • • • • • No External Components Required Output Voltage Offered in 2% and 4% Tolerance* Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor Safe–Area Compensation T SUFFIX PLASTIC PACKAGE CASE 221A Pin 1.
Input 2.
Ground 3.
Output 1 2 3 Heatsink surface is connected to Pin 2.
Simplified Application Input LM340–XX Output CO** ORDERING INFORMATION Device LM340T–5.
0 LM340AT–5.
0 LM340T–6.
0 LM340T–8.
0 LM340T–12 LM340AT–12 LM340T–15 LM340AT–15 LM340T–18 LM340T–24 Output Voltage and Tolerance 5.
0 V ± 4% 5.
0 V ± 2% 6.
0 V ± 4% 8.
0 V ± 4% 12 V ± 4% 12 V ± 2% 15 V ± 4% 15 V ± 2% 18 V ± 4% 24 V ± 4% TJ = 0° to +125 12 °C Pl i Power Plastic P Operating Temperature Range Package Cin* 0.
33µF A common ground is required between the input and the output voltages.
The input voltage must remain typically 1.
7 V above the output voltage even during the low point on the input ripple voltage.
XX these two digits of the type number indicate voltage.
* Cin is required if regulator is located an appreciable distance from power supply filter.
** CO is not needed for stability; however, it ...


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