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Product Detailed Parameters
- Description：IC POWER
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Transistor Driver
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Boost, Flyback, SEPIC
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：3.5V ~ 60V
- Frequency - Switching：100kHz ~ 2.2MHz
- Duty Cycle (Max)：93%
- Synchronous Rectifier：No
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Current Limit, Enable, Frequency Control, Power Good, Soft Start
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：12-WFDFN Exposed Pad
- Supplier Device Package：12-WSON (3x2)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LM5156QDSSRQ1 is an automotive-grade, non-synchronous DC-DC switching controller manufactured by Texas Instruments. It supports Boost, Flyback, and SEPIC topologies with a wide input voltage range of 2.97V to 60V. The device features an adjustable switching frequency from 100kHz to 2.2MHz and includes integrated control features such as soft-start, current limiting, and power good indication. It is housed in a 14-HTSSOP package and is qualified to AEC-Q100 standards for operation between -40°C and 125°C.
Feature Summary
- Supports Boost, Flyback, and SEPIC converter topologies
- Wide input voltage range up to 60V
- Adjustable switching frequency up to 2.2MHz
- Integrated soft-start and current limiting protection
Applications
- Automotive boost converters
- Isolated flyback power supplies
- SEPIC applications for variable input voltages
Procurement Notes
Verify the specific suffix 'DSSRQ1' against official Texas Instruments documentation to confirm the exact tape-and-reel packaging configuration and moisture sensitivity level. Ensure that the AEC-Q100 qualification status aligns with your system's reliability requirements. Cross-reference the datasheet revision history to confirm compatibility with your design specifications before finalizing procurement orders.
Selection Notes
Select this component when designing non-synchronous converters requiring high input voltage tolerance up to 60V. It is suitable for applications needing flexible topology options including isolated and non-isolated configurations. Consider the external MOSFET requirement due to its non-synchronous nature. Evaluate thermal performance within the HTSSOP package constraints for your specific power density needs.
Part Context
This part belongs to the LM5156xH-Q1 family of wide VIN automotive controllers. It shares functional similarities with other members like the LM51561HQPWPRQ1 but differs in package type and specific pinout configuration. The family is designed for robust automotive power management solutions requiring high voltage handling and flexible control architectures.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Verify cross-compatibility with LM5156 variants only through official Texas Instruments substitution guides.
