LM317LD13TR Adjustable 3-Terminal Positive Voltage Regulator
Couldn't load pickup availability
Have questions about this product? Our team is here to help — just reach out on WhatsApp.
💬 Contact Us on WhatsAppAbout the Product
LM317LD13TR Adjustable 3-Terminal Positive Voltage Regulator | 100mA Linear LDO
The LM317LD13TR is a 3-terminal adjustable positive voltage regulator delivering a steady output anywhere from 1.2V to 37V at up to 100mA output current. Two external resistors set the output voltage — the standard LM317 feedback divider math (VOUT = 1.25V × (1 + R2/R1)).
Headline specs: line regulation 0.01% typical, load regulation 0.1% typical, thermal overload protection, short-circuit protection, output transition safe-area compensation, floating operation for high-voltage applications.
When You Need the LM317LD13TR
- Auxiliary rail repair on control boards needing a 100mA fixed or adjustable output rail.
- Bias-supply regulator replacement on PSU or motor-drive control circuits.
- Custom embedded board build requiring tunable 1.2-37V output.
- Damaged TO-252 (DPAK) regulator — visible burn marks or thermal shutdown failure.
LM317LD13TR Specifications
| Feature | Specification |
|---|---|
| Type | Adjustable Positive Linear Voltage Regulator |
| Output Voltage Range | 1.2V to 37V (resistor-set) |
| Output Current | Up to 100mA |
| Line Regulation | 0.01% typical |
| Load Regulation | 0.1% typical |
| Thermal Protection | Yes |
| Short-Circuit Protection | Yes |
| Operation Mode | Floating (high-voltage capable) |
| Package | SOT-223 / TO-252 SMD variants |
FAQ — LM317LD13TR Regulator
Q: How do I set the output voltage?
A: Use the standard LM317 feedback divider: VOUT = 1.25V × (1 + R2/R1). For 5V output, R1 = 240Ω and R2 = 720Ω. Standard divider tables are available in any LM317 datasheet.
Q: Why "LD13TR" suffix?
A: The suffix encodes package and packing format. "LD" = LD (small SMD) package, "13" = output current bin (100mA), "TR" = tape-and-reel packaging. Different suffixes have different current ratings (LM317T = 1.5A, LM317M = 500mA, LM317L = 100mA).
Q: Rework profile?
A: Hot air at 320°C with flux paste. Match the original package on the board — substituting a higher-current variant with different pinout will fail.
Q: Bulk pricing?
A: Yes — email contact@lys-sz.com for tape-and-reel quantities.
Related products
- LM317MBSTT3G 500mA Adjustable Regulator
- LM1085IS-ADJ 3A Voltage Regulator
- MCP1824T-1802E/OT 1.8V LDO
- RT9080-33GJ5 3.3V LDO
Sourcing LM317LD13TR regulators in tape-and-reel quantities? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
