Overview
The LM317BD2TR4 is an adjustable 3-terminal positive voltage regulator produced by onsemi. This device is capable of supplying in excess of 1.5 A over an output voltage range of 1.2 V to 37 V. It is known for its ease of use, requiring only two external resistors to set the output voltage. The LM317 series, including the LM317BD2TR4, is highly versatile and reliable, making it ideal for a wide range of applications in electronics circuits.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | 1.5 A | A |
| Output Voltage Range | 1.2 V to 37 V | V |
| Input-Output Voltage Differential | -0.3 to 40 Vdc | Vdc |
| Power Dissipation (Case) | Internally Limited | W |
| Thermal Resistance, Junction-to-Ambient | 65 °C/W (D2PAK-3) | °C/W |
| Thermal Resistance, Junction-to-Case | 5.0 °C/W | °C/W |
| Operating Junction Temperature Range | -55 to +150 °C | °C |
| Storage Temperature Range | -65 to +150 °C | °C |
| Package | D2PAK-3 (TO-263-3, D²Pak) |
Key Features
- Output current in excess of 1.5 A
- Output voltage 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 the need for stocking many fixed voltages
- AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements
- Pb-free, halogen-free/BFR-free, and RoHS compliant
Applications
The LM317BD2TR4 is widely used in various electronic applications, including:
- Local, on-card regulation
- Power supplies
- Battery chargers
- Voltage reference circuits
- Audio, medical, and industrial applications
- Programmable output regulators and precision current regulators
Q & A
- What is the output current capacity of the LM317BD2TR4?
The LM317BD2TR4 can supply an output current in excess of 1.5 A.
- What is the adjustable output voltage range of the LM317BD2TR4?
The output voltage can be adjusted between 1.2 V and 37 V.
- What kind of protection features does the LM317BD2TR4 have?
The device includes internal thermal overload protection and internal short circuit current limiting.
- What is the thermal resistance of the LM317BD2TR4 in a D2PAK-3 package?
The thermal resistance, junction-to-ambient, is 65 °C/W, and junction-to-case is 5.0 °C/W.
- What is the operating junction temperature range for the LM317BD2TR4?
The operating junction temperature range is -55 to +150 °C.
- Is the LM317BD2TR4 RoHS compliant?
Yes, the LM317BD2TR4 is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What types of applications can the LM317BD2TR4 be used in?
The device is suitable for power supplies, battery chargers, voltage reference circuits, and various industrial, audio, and medical applications.
- How is the output voltage of the LM317BD2TR4 set?
The output voltage is set using two external resistors connected to the adjustment and output terminals.
- Does the LM317BD2TR4 require a minimum load current?
Yes, the device requires a minimum load current to maintain the set output voltage.
- Is the LM317BD2TR4 available in different packages?
Yes, the LM317 series is available in various packages, including D2PAK-3, TO-220, and others, but the LM317BD2TR4 specifically comes in a D2PAK-3 package.
