Product Summary

The LM317D2T is an adjustable 3–terminal positive voltage regulator capable of supplying in excess of 1.5A over an output voltage range of 1.2V to 37V. 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 LM317D2T 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 LM317D2T can be used as a precision current regulator.

Parametrics

LM317D2T absolute maximum ratings: (1)Input–Output Voltage Differential VI–VO: 40Vdc; (2)Power Dissipation Case 221A TA = +25℃ PD: Internally Limited; (3)Thermal Resistance, Junction–to–Ambient θJA: 65℃/W; (4)Thermal Resistance, Junction–to–Case θJC: 5.0℃/W; (5)Operating Junction Temperature Range TJ:–40 to +125℃; (6)Storage Temperature Range Tstg:–65 to +150℃.

Features

LM317D2T 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; (8)Package; (9)Eliminates Stocking many Fixed Voltages.

Diagrams

LM317D2T block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM317D2T
LM317D2T
STMicroelectronics
Linear Regulators - Standard 1.2-37V Adj Positive
Data Sheet
0-1370: $0.32
1370-2000: $0.28
2000-5000: $0.27
5000-10000: $0.26
LM317D2TG
LM317D2TG
ON Semiconductor
Linear Regulators - Standard 1.5A ADJ 1.2-37V Positive
Data Sheet
0-1: $0.46
1-25: $0.41
25-100: $0.30
100-500: $0.25
LM317D2TR4G
LM317D2TR4G
ON Semiconductor
Linear Regulators - Standard 1.5A ADJ 1.2-37V Positive
Data Sheet
0-1: $0.56
1-25: $0.44
25-100: $0.38
100-500: $0.28
500-800: $0.28
LM317D2T-TR
LM317D2T-TR
STMicroelectronics
Linear Regulators - Standard 1.2-37V Adj Positive
Data Sheet
0-1: $0.48
1-10: $0.37
10-100: $0.32
100-250: $0.28
LM317D2TXM
LM317D2TXM
Fairchild Semiconductor
Linear Regulators - Standard STD_LINEAR
Data Sheet
Negotiable 
LM317D2TR4
LM317D2TR4
ON Semiconductor
Linear Regulators - Standard 1.5A ADJ 1.2-37V
Data Sheet
Negotiable