My Inquiry
My Account
Allegro MicroSystems A6260KLJTR-T
- Part No.:
- A6260KLJTR-T
- Manufacturer:
- Allegro MicroSystems
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
A6260KLJTR-T.pdf
- Description:
- IC LED DRVR LIN PWM 350MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:409
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
A6260KLJTR-T from Allegro MicroSystems is a linear programmable current regulator IC designed for automotive high-brightness LED lighting, delivering up to 350 mA with ±4% accuracy, 6–40 V supply range, and integrated thermal/short-circuit protection. It operates in 8-pin SOICN with exposed thermal pad and supports PWM dimming via EN pin.
For engineers reviewing the A6260KLJTR-T datasheet, A6260KLJTR-T pinout, A6260KLJTR-T application, or A6260KLJTR-T equivalent, key selection criteria include its AEC-Q100 qualification, 2.25 V dropout at 350 mA, 10 µA shutdown current, thermal threshold adjustability via THTH pin, and compliance with automotive 12 V net requirements.
Technical Context
The A6260KLJTR-T implements a dual-path linear regulation architecture: a high-side switch (LA) controlled by VIN and overcurrent detection, and a low-side current sink (LC–LSS) regulated against a 102 mV internal reference. Current accuracy is maintained across –40°C to 125°C ambient via on-chip temperature compensation.
Protection logic integrates three independent mechanisms: LA/LC short-to-supply or short-to-ground detection with 3 µs response, thermal current reduction starting at 90–120°C (TJM), and full overtemperature shutdown at 165°C (TJF) with 15°C hysteresis. Reverse battery protection is implemented at the VIN input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LED Drive Current | Up to 350 mA with ±4% accuracy - enables stable brightness across temperature and supply variation |
| Supply Voltage Range | 6 V to 40 V - supports direct connection to automotive 12 V net with reverse battery protection |
| Dropout Voltage | 2.25 V max at 350 mA - allows single white LED operation down to 6 V supply |
| Shutdown Current | 10 µA max - enables always-connected LED systems without battery drain |
| Thermal Threshold | Adjustable 90–120°C activation (TJM) - permits thermal derating before junction exceeds 150°C limit |
| PWM Slew Control | Rise/fall times of 50–120 µs - reduces EMI during brightness modulation |
| ESD Rating | 2000 V HBM, 1050 V CDM - meets AEC-Q100-002/-011 for harsh automotive environments |
Pinout & Package
Package: 8-pin SOICN (suffix LJ) with exposed thermal pad for enhanced heat dissipation; RoHS-compliant, 100% matte-tin leadframe plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SENSE | Current sense reference input | High-impedance node comparing voltage across external sense resistor to 102 mV internal reference |
| 2 GND | Ground reference | Primary return path for control circuitry and sense resistor; must connect near bottom of sense resistor |
| 3 THTH | Thermal threshold programming | Voltage-adjustable input setting current-reduction onset temperature (90–120°C); open = default TJM |
| 4 EN | Enable/PWM control | Logic-level input enabling operation or accepting PWM signal; low = <10 µA sleep mode |
| 5 VIN | Main power supply | 6–40 V input with reverse battery protection; powers internal regulators and high-side switch |
| 6 LA | LED anode connection | Switched high-side output; includes overcurrent detection and current limiting |
| 7 LC | LED cathode connection | Controlled current sink output; protected against short-to-supply and short-to-ground |
| 8 LSS | Low-side sense return | Connection point for external sense resistor; completes current-sensing loop with SENSE pin |
| Pad | Exposed thermal pad | Primary thermal path to PCB; requires soldered copper area and thermal vias for RθJA ≤ 35°C/W |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified for automotive Grade 1 (–40°C to 125°C ambient), including stress testing per AEC standard |
| Programmable thermal threshold | THTH pin allows precise adjustment of current-reduction onset temperature using external resistors |
| Integrated short-circuit protection | Detects five fault modes (LA/LC shorts to supply/ground, LA–LC short) with 3 µs response and auto-recovery |
| Reverse battery protection | Withstands –14 V at VIN without damage - eliminates need for external protection diodes |
| PWM-compatible dimming | EN pin accepts direct PWM signals with controlled slew rate to minimize conducted EMI |
Applications
| Automotive Front Lighting | Commercial Interior Lighting |
|---|---|
Use Scenario: Driving 1–3 white LEDs in headlamp position or DRL modules powered from 12 V vehicle net. IC Role / Device Role / Timing Role: Constant-current regulator providing stable 350 mA drive with thermal foldback during prolonged operation. Use Value: Enables compact, thermally robust LED driver design meeting OEM thermal derating requirements without external thermal sensors. | Use Scenario: Powering interior dome or map lights in trucks and buses where wide input voltage (6–40 V) accommodates cranking and alternator transients. IC Role / Device Role / Timing Role: Linear LED driver with reverse battery protection and <10 µA shutdown current for always-on lighting systems. Use Value: Eliminates need for external reverse-polarity protection and reduces standby power loss versus discrete solutions. |
| Industrial Signage | Heavy-Duty Equipment Lighting |
Use Scenario: Controlling brightness of high-lumen LED arrays in outdoor signage exposed to ambient temperatures from –40°C to 85°C. IC Role / Device Role / Timing Role: Programmable current source with adjustable thermal threshold (via THTH) to maintain consistent light output across operating range. Use Value: Prevents thermal runaway in enclosed fixtures by reducing LED current before junction reaches 150°C limit. | Use Scenario: Replacing incandescent bulbs in construction or agricultural machinery with LED equivalents requiring robust fault handling. IC Role / Device Role / Timing Role: Fault-tolerant LED driver supporting LA short-to-supply configuration and detecting all five short-circuit conditions. Use Value: Increases system reliability in vibration-prone environments where wiring faults are common; enables safe lamp-replacement topology. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED current regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL8862Q-7 | Switch-mode buck regulator; higher efficiency but requires external inductor and diode; no reverse battery protection | Better suited for >3 LED strings or battery-powered systems where efficiency >85% is critical | Select AL8862Q-7 only when thermal constraints prevent linear solution or when >350 mA total current is needed across multiple channels |
| TPS92630QPWPRQ1 | Three-channel linear regulator; fixed 150 mA per channel; integrated diagnostics; no THTH adjustability | Designed for multi-zone automotive lighting with channel enable/disable and fault reporting | Choose TPS92630QPWPRQ1 when multi-channel independent control and diagnostic reporting are required over single-channel programmability |
Compared with AL8862Q-7 and TPS92630QPWPRQ1, the A6260KLJTR-T offers superior simplicity for single-string automotive LED drivers, combining reverse battery protection, adjustable thermal foldback, and 350 mA capability in one SOICN package - eliminating external components while maintaining AEC-Q100 compliance.
Availability
A6260KLJTR-T is available at Aetrix Electronics and suitable for automotive front lighting, commercial interior lighting, industrial signage, and heavy-duty equipment lighting requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for A6260KLJTR-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Allegro MicroSystems is a U.S.-based semiconductor company specializing in magnetic sensing, power ICs, and precision motion control solutions for automotive and industrial markets.
The A6260 product line delivers robust, AEC-Q100-qualified linear LED drivers optimized for automotive lighting systems requiring high reliability, fault tolerance, and thermal resilience in constrained spaces.
FAQ
What is the maximum LED string voltage supported by the A6260KLJTR-T?
The A6260KLJTR-T supports LED string voltages up to VIN – 2.35 V (typical dropout at 350 mA). With a 40 V maximum supply, this allows up to ~37.65 V across the LED string. However, optimal performance is specified for 1–3 white LEDs (typically 3–9 V total), ensuring thermal stability and regulation accuracy within the device's safe operating area.
How does the THTH pin affect thermal management in the A6260KLJTR-T?
The THTH pin on the A6260KLJTR-T sets the junction temperature threshold (TJM) at which regulated current begins decreasing. When left open, TJM defaults to 90–120°C; connecting a resistor to GND raises TJM, while connecting to VIN lowers it. This allows system designers to align current foldback with LED thermal limits or enclosure constraints without adding external sensors.
Can the A6260KLJTR-T drive LEDs in parallel configurations?
Yes - the A6260KLJTR-T supports parallel operation when each device uses its own dedicated sense resistor. Because it regulates current independently of output voltage (within compliance range), multiple A6260KLJTR-T units can share load current across separate LED strings. This configuration maintains individual fault isolation and thermal management per channel.
What protection features are integrated into the A6260KLJTR-T?
The A6260KLJTR-T integrates five protection mechanisms: reverse battery protection at VIN, LA/LC short-to-supply or short-to-ground detection (five fault modes), overcurrent trip with 3 µs response, thermal current foldback (90–120°C onset), and full overtemperature shutdown at 165°C with 15°C hysteresis. All protections operate autonomously without external components.
Is the A6260KLJTR-T compatible with PWM dimming, and how is it implemented?
Yes - PWM dimming is implemented directly via the EN pin of the A6260KLJTR-T. The device limits current slew rate (50–120 µs rise/fall) to reduce EMI, and sequences switching so the low-side regulator disables before the high-side switch turns off - preventing current spikes. No external MOSFET or gate driver is required.
A6260KLJTR-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 6V
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- -
- Current - Output / Channel:
- 350mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
A6260KLJTR-T FAQ
1.How can I place an order for A6260KLJTR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for A6260KLJTR-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for A6260KLJTR-T reliable?
The price and inventory of A6260KLJTR-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A6260KLJTR-T is usually 5 days.
3.What payment methods are accepted for A6260KLJTR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A6260KLJTR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A6260KLJTR-T?
A6260KLJTR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A6260KLJTR-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for A6260KLJTR-T?
For technical support, including A6260KLJTR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A6260KLJTR-T requirements.
6.How does Aetrix verify that A6260KLJTR-T is sourced from the original manufacturer or authorized distributors?
All A6260KLJTR-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that A6260KLJTR-T meets industry standards.
7.What is the process for return or replacement of A6260KLJTR-T?
All A6260KLJTR-T units undergo pre-shipment inspection (PSI). If there is an issue with A6260KLJTR-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The A6260KLJTR-T part is unused and in its original packaging.
Return procedure for A6260KLJTR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
A6260KLJTR-T Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
