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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 16ETSSOP
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：SEPIC, Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：4.2V
- Voltage - Supply (Max)：50V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：700kHz
- Dimming：Analog, PWM
- Applications：-
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：16-eTSSOP-EP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The A6271KLPTR-T is an automotive-grade LED lighting driver IC designed for high-current applications. It functions as a DC-DC controller supporting SEPIC, buck, and boost topologies. The device operates with a supply voltage range of 4.2V to 50V and features a switching frequency of 700kHz. It provides one output channel and supports both analog and PWM dimming methods. The component is housed in a 16-eTSSOP package with an exposed pad and is rated for operation between -40°C and 150°C junction temperature.
Feature Summary
- Supports multiple DC-DC converter topologies including SEPIC, buck, and boost configurations.
- Compatible with automotive environments through AEC-Q100 qualification.
- Enables precise light control via integrated analog and PWM dimming capabilities.
Applications
- Automotive LED headlight systems
- High-intensity discharge lamp replacement drivers
- Complex LED lighting architectures requiring flexible input/output voltage relationships
Procurement Notes
Verify the specific ordering suffix and tape change documentation prior to procurement. Confirm that the component status aligns with current design requirements, as availability may vary. Ensure that the 16-eTSSOP-EP package dimensions match the target PCB footprint. Validate compliance with RoHS3 standards and check moisture sensitivity levels for proper storage handling.
Selection Notes
Select this component when designing circuits that require flexibility in input voltage relative to LED string voltage, necessitating SEPIC or boost-buck functionality. It is suitable for applications demanding high efficiency and thermal performance within automotive constraints. Consider the 700kHz switching frequency for passive component sizing and electromagnetic interference management.
Part Context
This part belongs to the Allegro MicroSystems A6271 series of LED lighting controllers. It is engineered specifically for automotive illumination where reliability and wide operating voltage ranges are critical. The device integrates control logic for external power stages, distinguishing it from fully integrated single-chip solutions.
Replacement Considerations
Publicly documented substitutes include the A6266KLPTR-T and A6267KLPTR-T. Note that these alternatives may differ in supported topologies; verify functional compatibility regarding circuit architecture before substitution.
