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Product Detailed Parameters
- Description：IC LED DRV LIN PWM 16ETSSOP
- 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 ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：16-eTSSOP-EP
- Grade：-
- Qualification：-
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Overview
The A6261ELPTR-T is a discontinued linear LED driver IC from Allegro MicroSystems, designed for automotive and industrial applications. It features four independent constant-current outputs capable of delivering up to 100 mA per channel. The device operates within a supply voltage range of 6 V to 50 V and supports PWM dimming for brightness control. Packaged in a 16-pin eTSSOP with an exposed pad, it is qualified to AEC-Q100 standards and rated for operation between -40°C and 85°C.
Feature Summary
- Four-channel linear constant-current regulation with precise current matching
- Integrated PWM dimming interface for adjustable brightness control
- Automotive-grade reliability with AEC-Q100 qualification
- Wide input voltage tolerance suitable for harsh electrical environments
Applications
- Automotive interior lighting systems such as reading lamps
- Exterior vehicle illumination including turn signals and brake lights
- Industrial high-brightness LED array driving
- Consumer LED lighting fixtures requiring constant current sources
Procurement Notes
This component has been officially declared obsolete by the manufacturer. Verification of availability requires checking authorized distributors for remaining stock or surplus inventory. Engineers must confirm the specific suffix indicates the exact package variant. Replacement sourcing should prioritize verified parameter-equivalent alternatives to ensure functional compatibility in existing designs.
Selection Notes
Designers should note that this part is no longer in active production. Selection requires evaluating long-term supply chain stability and lifecycle status. The 100 mA output current limit defines its suitability for low-to-medium power LED arrays. Package thermal performance depends on proper PCB copper area utilization for the exposed pad to maintain junction temperatures within safe operating limits during continuous operation.
Part Context
The A6261 belongs to Allegro's dedicated LED driver family targeting automotive safety and comfort lighting. It provides a compact solution for driving multiple LED strings from a single reference resistor. The device integrates protection features against short circuits and over-temperature conditions, ensuring robust performance in demanding vehicular environments where space and efficiency are critical constraints.
Replacement Considerations
The A6261KLPTR-T is documented as a parameter-equivalent replacement for the A6261ELPTR-T. Both parts share identical electrical characteristics and pinouts but differ in manufacturing lot or minor packaging revisions. Verify the replacement's active status and lead times before finalizing design changes.
