LM317LMX/NOPB LM317T/NOPB Power Regulator IC Linear Voltage Regulators 3-TERMINAL ADJ REG
digital voltage regulator ic
,electronic voltage regulator circuit
LM317LMX/NOPB LM317T/NOPB Power Regulator IC Linear Voltage Regulators 3-TERMINAL ADJ REG
1 Features
- Adjustable Output Down to 1.2 V
-
100-mA Output Current
-
Capable of Handling up to 40V VIN
-
Line Regulation Typically 0.01% /V
-
Load Regulation Typically 0.1% /A
-
No Output Capacitor Required (†)
-
Current Limit Constant With Temperature
-
Eliminates the Need to Stock Many Voltages
-
Standard 3-Lead Transistor Package
-
80-dB Ripple Rejection
-
Available in 3-Pin TO-92, 8-Pin SOIC, or 6-pin DSBGA Packages
-
Output is Short-Circuit Protected
2 Applications
-
Automotive LED Lighting
-
Battery Chargers
-
Post Regulation for Switching Supplies
-
Constant-Current Regulators
-
Microprocessor Supplies
3 Description
The LM317L-N is an adjustable positive voltage regulator capable of supplying 100 mA over a 1.2-V to 37-V output range. The LM317L-N is easy to use and requires only two external resistors to set the output voltage. Both line and load regulation are better than standard fixed regulators. The LM317L-N is available packaged in a standard, easy-to-use TO-92 transistor package.
The LM317L-N offers full overload protection. Included on the chip are current limit, thermal overload protection, and safe area protection. Normally, no capacitors are required unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is required.
The LM317L-N uses floating topology and sees only the input-to-output differential voltage, therefore supplies of several hundred volts can be regulated, provided the maximum input-to-output differential is not exceeded. The device makes a simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317L-N can be used as a precision current regulator.
The LM317L-N is available in a standard 3-pin TO-92 transistor package, the 8-pin SOIC package, and 6- pin DSBGA package. The LM317L-N is rated for operation over a −40°C to 125°C range.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
LM317L-N |
TO-92 (3) |
4.30 mm × 4.30 mm |
|
SOIC (8) |
3.91 mm × 4.90 mm |
|
|
DSBGA (6) |
1.68 mm × 1.019 mm |
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