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Product Detailed Parameters
- Description：IC LED DRVR LIN PWM 100MA 10MSOP
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Linear
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：4
- Voltage - Supply (Min)：6V
- Voltage - Supply (Max)：50V
- Voltage - Output：-
- Current - Output / Channel：100mA
- Frequency：-
- Dimming：PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：10-MSOP-EP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The A6261KLYTR-T is a linear LED driver IC from Allegro MicroSystems, designed for automotive applications. It features four independent current-regulated outputs capable of delivering up to 100 mA per channel. The device operates within an input voltage range of 6 V to 50 V and supports PWM dimming for brightness control. Packaged in a 10-MSOP with exposed pad (LY-10), it is qualified to AEC-Q100 standards and functions across a temperature range of -40°C to 125°C.
Feature Summary
- Four independent linear constant-current channels provide precise LED regulation without requiring ballast resistors.
- Integrated thermal shutdown and overtemperature protection circuits safeguard the device and connected LEDs.
- Supports pulse-width modulation (PWM) dimming via the ENABLE pin for adjustable brightness levels.
- Includes reverse battery protection and short-circuit protection for robust automotive operation.
Applications
- Automotive interior lighting such as reading lamps and dome lights
- Exterior vehicle lighting including turn signals and brake lights
- Trunk and cargo area illumination systems
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the received package matches the 10-MSOP specification and check for moisture sensitivity labeling. Ensure compliance with RoHS3 directives and validate AEC-Q100 automotive grade certification before integration into production designs.
Selection Notes
Select this model when four separate low-to-medium current LED channels are required in a compact footprint. The linear topology suits applications where efficiency is secondary to cost and simplicity. Consider alternative packages like TSSOP if board space allows for larger dimensions. Verify that the 100 mA per channel limit meets the specific LED array requirements.
Part Context
This part belongs to the A6261 series of programmable current regulators. It shares functional similarities with other Allegro drivers but is distinct due to its four-channel configuration and MSOP packaging. The series targets high-brightness LED arrays in demanding environments, offering reliable performance compared to single-channel counterparts.
Replacement Considerations
Direct substitutes include A6261KLPTR-T for TSSOP-16 packaging compatibility. For higher current needs, consider the A6266 series. Verify pinout and thermal characteristics when swapping packages to ensure proper heat dissipation and circuit functionality.
FAQ
How is the output current regulated?
The regulated LED current is set by a single external reference resistor, providing accuracy within 5% without needing ballast resistors.
What happens during an overtemperature event?
The integrated thermal shutdown circuit disables the IC if the junction temperature reaches approximately 165°C to prevent damage.
