The A6271-1 is an automotive-grade DC-DC converter controller designed to drive high-power series LEDs with constant current, supporting boost, buck-boost, buck, and SEPIC topologies. It is packaged in a 16-pin eTSSOP with an exposed thermal pad and is AEC-Q100 qualified. The device operates from a 4.2 V to 50 V input supply and supports LED string voltages up to 53.3 V. Switching frequency is programmable from 70 kHz to 700 kHz, with integrated frequency dithering for EMI reduction compliant with CISPR 25. It provides PWM and analog dimming control, comprehensive fault protection, and drives an external p-channel MOSFET for LED current regulation and load isolation.
LED Drivers for Lighting
LED Driver IC 1 Output DC DC Controller SEPIC, Step-Down (Buck), Step-Up (Boost) Analog, PWM Dimming 16-eTSSOP-EP
LED Driver IC 1 Output DC DC Controller SEPIC, Step-Down (Buck), Step-Up (Boost) Analog, PWM Dimming 16-eTSSOP-EP
LED Driver IC 1 Output DC DC Controller SEPIC, Step-Down (Buck), Step-Up (Boost) Analog, PWM Dimming 16-eTSSOP-EP
Manufacturer: Allegro MicroSystems, LLC
Win Source Part Number: 1011361-A6271KLPTR-T
Packaging: Reel - TR
Type: DC DC Controller
Applications: Automotive
Mounting: SMD (SMT)
Frequency: 700kHz
Topology: SEPIC, Step-Down (Buck), Step-Up (Boost)
Number of Outputs: 1
Dimming: Analog, PWM
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: -40°C to 150°C (TJ)
Case / Package: 16-eTSSOP
Maximum Supply Voltage: 50V
Operating Input Voltage(Min): 4.2V
Popularity: Medium
Fake Threat In the Open Market: 32 pct.
Supply and Demand Status: Sufficient
LED Driver, Product overview: A6271KLPTR-T from Allegro MicroSystems is a LED Driver IC for LED lighting, display backlights, indicator control, automotive lighting, signage, and regulated current drive circuits. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include key electrical ratings, package details, and application requirements. Search-friendly keywords include LED driver IC, constant current, lighting control, display backlight, External/Internal LED Drivers. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 137-A6271KLPTR-T can be used for catalog matching and distributor lookup.
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| Allegro MicroSystems Inc. | DigiKey | Win Source Electronics | ERSAELECTRONICS PTE. LTD. | Utmel Electronic Limited | Lingto Electronic Limited | Shenzhen Shengyu Electronics Technology Limited | |
|---|---|---|---|---|---|---|---|
| Product Category | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers |
| Product Number | A6271KLPTR-T | 620-1733-6-ND | 1011361-A6271KLPTR-T | 137-A6271KLPTR-T | 26-A6271KLPTR-T | A6271KLPTR-T | A6271KLPTR-T |
| Product Name | Automotive High Current Led Controller | LED Drivers | PMIC - PMIC - LED Drivers - A6271KLPTR-T | LED Driver IC | IC LED DRIVER LINEAR 16TSSOP | PMIC - LED Drivers | Integrated Circuits (ICs) - Power Management (PMIC) - LED Drivers |
| Form Factor | Intgrated Circuit (IC) | Intgrated Circuit (IC) | Intgrated Circuit (IC) |
