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LM337 Scheda tecnica(PDF) 1 Page - ON Semiconductor |
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LM337 Scheda tecnica(HTML) 1 Page - ON Semiconductor |
1 / 8 page LM337 Order this document by LM337/D Device Operating Temperature Range Package ORDERING INFORMATION LM337D2T LM337T Surface Mount Insertion Mount LM337BD2T LM337BT TJ = – 40° to +125°C Surface Mount Insertion Mount TJ = 0° to +125°C SEMICONDUCTOR TECHNICAL DATA THREE–TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATOR Pin 1. Adjust 2. Vin 3. Vout T SUFFIX PLASTIC PACKAGE CASE 221A Heatsink surface connected to Pin 2. 3 1 2 D2T SUFFIX PLASTIC PACKAGE CASE 936 (D2PAK) Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. 3 1 2 1 MOTOROLA ANALOG IC DEVICE DATA Three-Terminal Adjustable Output Negative Voltage Regulator The LM337 is an adjustable 3–terminal negative voltage regulator capable of supplying in excess of 1.5 A over an output voltage range of –1.2 V to – 37 V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blow–out proof. The LM337 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM337 can be used as a precision current regulator. • Output Current in Excess of 1.5 A • Output Adjustable between –1.2 V and –37 V • Internal Thermal Overload Protection • Internal Short Circuit Current Limiting Constant with Temperature • Output Transistor Safe–Area Compensation • Floating Operation for High Voltage Applications • Eliminates Stocking many Fixed Voltages • Available in Surface Mount D2PAK and Standard 3–Lead Transistor Package Standard Application Vout + –1.25 V 1 ) R 2 R 1 *Cin is required if regulator is located more than 4 inches from power supply filter. * A 1.0 µF solid tantalum or 10 µF aluminum electrolytic is recommended. ** CO is necessary for stability. A 1.0 µF solid tantalum or 10 µF aluminum electrolytic ** is recommeded. LM337 IPROG Cin* 1.0 µF + –Vin Vin Vout –Vout CO** 1.0 µF + IAdj R1 120 R2 © Motorola, Inc. 1996 Rev 1 |
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