Hello! now
tms@lcdchip.com
STMicroelectronics LM317LD13TR
- Part No.:
- LM317LD13TR
- Manufacturer:
- STMicroelectronics
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Description:
- IC REG LIN POS ADJ 100MA 8SOIC
- Quantity:
Unit Price:$0
Ext Price:$0
- Payment:
- Shipping:
Product Details
LM317LD13TR - 100 mA Adjustable Positive Regulator
STMicroelectronics LM317LD13TR is a low-current adjustable positive linear regulator for 1.2 V to 37 V outputs and load currents up to 100 mA, supplied in an 8-pin SOIC tape-and-reel package.
Electrical, pin, package, and ordering details were checked against ST data sheet DocID2168 Rev. 7 and the exact LM317LD13TR manufacturer listing.
Overview
The LM317LD13TR uses a resistive divider to set a positive output from 1.2 V to 37 V. Its floating architecture responds to the input-to-output differential rather than ground-referenced input voltage. Thermal overload protection, short-circuit protection, and output-transition safe-area compensation support adjustable rails and current-source circuits.
Key Advantages
Adjustable output
A simple resistor divider programs the output across the supported 1.2 V to 37 V range.
Floating operation
The regulator responds to differential voltage, enabling high-side uses within rated limits.
Compact SO-8
Multiple output pins share the die-attach flag to help spread heat into PCB copper.
Integrated protection
Thermal overload, short-circuit, and safe-area protection reduce external complexity.
Feature Summary
Up to 100 mA
Provides rated output current when differential voltage and thermal conditions permit.
1.25 V reference
The reference between OUT and ADJUST establishes the programmed voltage or current.
Good regulation
Typical line regulation is 0.01% per volt and typical load regulation is 0.1% for outputs above 5 V.
Adjustment bypass option
A 10 microfarad ADJUST-to-ground capacitor improves 120 Hz supply rejection.
Package & Footprint
ST identifies the D13 order code as SO-8 tape-and-reel. The catalog records the package as 8-SOIC (0.154 inch, 3.90 mm body width), matching ST's 3.80 mm to 4.00 mm body-width limits.
- Use ST's current SO-8 footprint and verify pin-1 orientation.
- Connect pins 2, 3, 6, and 7 to the common output copper.
- Keep the feedback divider close to OUT and ADJUST.
- Provide copper area for the output-connected thermal frame.
The registered JPG exists locally, returned HTTP 200 as JPEG in production, and was visually checked as an eight-lead SOIC illustration.
Pin Functions
The assignment below applies to ST's SO-8 top view.
Key Specifications
| Manufacturer | STMicroelectronics |
|---|---|
| Regulator type | Adjustable positive linear voltage regulator |
| Output-voltage range | 1.2 V to 37 V |
| Output current | Up to 100 mA |
| Input-to-output absolute maximum | 40 V |
| Reference voltage | 1.20 V minimum, 1.25 V typical, 1.30 V maximum |
| Line regulation | 0.01%/V typical and 0.04%/V maximum at 25 degrees C under stated conditions |
| Load regulation at or below 5 V | 5 mV typical, 25 mV maximum at 25 degrees C from 5 mA to 100 mA |
| Adjustment current | 50 microamperes typical, 100 microamperes maximum |
| Minimum load current | 3.5 mA typical, 5 mA maximum at 40 V differential |
| Output noise | 0.003% of output, 10 Hz to 10 kHz, typical |
| Supply rejection | 65 dB typical without ADJUST bypass; 66 dB minimum and 80 dB typical with 10 microfarad bypass at 120 Hz |
| Operating junction temperature | 0 degrees C to +125 degrees C |
| Thermal resistance | 55 degrees C/W junction-to-ambient maximum with the stated 6 cm² copper heat sink |
| Package and media | 8-pin SO-8, tape-and-reel |
Values depend on the stated ST test conditions. The minimum load must be maintained or output voltage can rise above the programmed value.
Replacement Considerations
A candidate replacement must match the adjustable range, 100 mA requirement, differential rating, minimum load, SO-8 footprint, multiple-OUT pin map, reference voltage, adjustment current, temperature range, protection, and thermal frame. Similar LM217L or other-vendor LM317L options can have different temperature limits and pin guidance.
No internal replacement link is asserted without an exact API-confirmed catalog match and engineering review.
Manufacturer Information
STMicroelectronics lists LM317LD13TR as an active industrial product in volume production. LM317L identifies the low-current adjustable family, D13 identifies SO-8 tape-and-reel packaging, and TR denotes tape-and-reel supply. ST characterizes LM317L from 0 degrees C to +125 degrees C; this differs from the LM217L grade.
Applications
Adjustable local rails
Generate a board-level voltage selected by a resistor divider.
Precision current sources
Use the reference voltage with a programming resistor to establish controlled current.
Tracking supplies
Build positive rails that follow a reference or companion output.
Post-regulation
Reduce ripple after a preregulator when differential voltage and dissipation are controlled.
Quality & Authenticity
Confirm the exact LM317LD13TR order code, reel label, top marking, SO-8 dimensions, pin-1 indicator, and lot traceability during incoming inspection. Package appearance alone does not establish identity or authenticity. Electrical verification should follow ST's latest limits.
FAQ
How is the output voltage set?
Use a resistive divider from OUT through ADJUST to ground according to ST's design equation.
Why are four pins labeled OUT?
Pins 2, 3, 6, and 7 are internally common and also connect to the thermal frame.
What minimum load is required?
At 40 V differential, ST specifies 3.5 mA typical and 5 mA maximum minimum-load current.
Can it deliver 100 mA at any differential?
No. Current limit and available output depend on differential voltage and temperature; thermal dissipation must also be checked.
What temperature range applies?
The ST LM317L grade is specified from 0 degrees C to +125 degrees C junction temperature.
Engineering Notice
Validate differential voltage, programmed output, minimum load, current limit, capacitor placement, protection diodes for stored-energy nodes, output-connected copper area, and junction temperature in the final circuit. Power dissipation is approximately (VIN minus VOUT) multiplied by load current plus bias effects.
LM317LD13TR Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 37V
- Voltage Dropout (Max):
- -
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 5 mA
- Current - Supply (Max):
- -
- PSRR:
- 80dB ~ 65dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
- Include Parts
- Popular Search
The following parts include "LM317LD13TR" in Silicon Labs LM317LD13TR.
- Part Number
- Manufacturer
- Package
- Description
- MIC5504-1.8YM5-TR Microchip Technology SC-74A, SOT-753 IC REG LINEAR 1.8V 300MA SOT23-5
- MIC5504-3.3YM5-TR Microchip Technology SC-74A, SOT-753 IC REG LINEAR 3.3V 300MA SOT23-5
- MIC5365-3.0YC5-TR Microchip Technology 5-TSSOP, SC-70-5, SOT-353 IC REG LINEAR 3V 150MA SC70-5
- MIC5365-1.8YC5-TR Microchip Technology 5-TSSOP, SC-70-5, SOT-353 IC REG LINEAR 1.8V 150MA SC70-5
- MIC5365-2.5YC5-TR Microchip Technology 5-TSSOP, SC-70-5, SOT-353 IC REG LINEAR 2.5V 150MA SC70-5
- MIC5365-3.3YC5-TR Microchip Technology 5-TSSOP, SC-70-5, SOT-353 IC REG LINEAR 3.3V 150MA SC70-5
- MIC5365-3.3YD5-TR Microchip Technology SOT-23-5 Thin, TSOT-23-5 IC REG LIN 3.3V 150MA TSOT23-5
- MIC5317-3.3YM5-TR Microchip Technology SC-74A, SOT-753 IC REG LINEAR 3.3V 150MA SOT23-5
- TLV1117LV33DCYR Texas Instruments TO-261-4, TO-261AA IC REG LINEAR 3.3V 1A SOT223-4
- MIC5317-3.3YMT-TZ Microchip Technology 4-UDFN Exposed Pad IC REG LINEAR 3.3V 150MA 4DFN
The following parts are popular search parts in Test and Measurement.
Inventory:69,456
Please send an inquiry. Send us your inquiry, and we will respond immediately.
