Product Summary

The LM317BT is an adjustable 3–terminal positive 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 LM317BT serves a wide variety of applications including local, on card regulation. The LM317BT can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317BT can be used as a precision current regulator.

Parametrics

LM317BT absolute maximum ratings: (1)Input–Output Voltage Differential: 40 Vdc; (2)Power Dissipation Case 221A: Internally Limited W at TA = +25℃, 65 ℃/W at Thermal Resistance, Junction–to–Ambient, 5.0 ℃/W at Thermal Resistance, Junction–to–Case; (3)Case 936 (D2PAK): Internally Limited W at TA = +25℃, 70 ℃/W at Thermal Resistance, Junction–to–Ambient, 5.0 ℃/W at Thermal Resistance, Junction–to–Case; (4)Operating Junction Temperature Range: –40 to +125 ℃; (5)Storage Temperature Range: –65 to +150 ℃.

Features

LM317BT features: (1)Output Current in Excess of 1.5 A; (2)Output Adjustable between 1.2 V and 37 V; (3)Internal Thermal Overload Protection; (4)Internal Short Circuit Current Limiting Constant with Temperature; (5)Output Transistor Safe-Area Compensation; (6)Floating Operation for High Voltage Applications; (7)Available in Surface Mount D2PAK, and Standard 3-Lead Transistor Package; (8)Eliminates Stocking many Fixed Voltages.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM317BT
LM317BT
ON Semiconductor
Linear Regulators - Standard 1.5A ADJ 1.2-37V
Data Sheet
Negotiable 
LM317BTG
LM317BTG
ON Semiconductor
Linear Regulators - Standard 1.5A ADJ 1.2-37V Positive
Data Sheet
0-1: $0.33
1-25: $0.30
25-100: $0.22
100-500: $0.18