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Product Detailed Parameters
- Description：IC REG CTRLR BUCK-BOOST 28HTSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：3.5V ~ 42V
- Frequency - Switching：100kHz ~ 600kHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Power Good, Soft Start
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：28-HTSSOP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LM5175QPWPTQ1 is an automotive-grade synchronous buck controller from Texas Instruments, designed for high-current applications. It supports a wide input voltage range up to 42 V and delivers output currents up to 20 A. The device features adjustable switching frequencies between 100 kHz and 600 kHz and operates within a junction temperature range of -40°C to +125°C. Packaged in a thermally enhanced HTSSOP-28, it includes integrated bootstrap diodes and current-mode control for stable performance.
Feature Summary
- Integrated bootstrap diode eliminates the need for external components
- Current-mode control architecture ensures fast transient response
- Wide input voltage capability accommodates various power bus architectures
Applications
- Automotive infotainment systems
- Body control modules
- High-power LED lighting drivers
Procurement Notes
Verify the complete part number including suffixes to ensure correct package and tape/reel specifications. Confirm that the component meets specific automotive reliability standards required for your application environment. Check datasheet revisions for any updates to electrical characteristics or recommended operating conditions before finalizing design integration.
Selection Notes
Select this controller when high output current and wide input voltage ranges are required in an automotive setting. Consider the HTSSOP-28 package for thermal management needs. Ensure the chosen switching frequency aligns with passive component size constraints and electromagnetic interference requirements for the target system.
Part Context
This component belongs to the LM5175 family of synchronous buck controllers. It shares functional similarities with other automotive-grade power management ICs but is distinct in its specific current handling capabilities and integrated bootstrap diode feature. The QP designation indicates automotive qualification.
Replacement Considerations
Direct substitutes may include non-automotive grade equivalents if reliability standards allow, though pin compatibility must be verified. Cross-reference with other Texas Instruments buck controllers for form-fit-function matches in existing designs.
