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Product Detailed Parameters
- Description：LM5176PWPR
- 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)：4.2V ~ 55V
- Frequency - Switching：100kHz ~ 600kHz
- Duty Cycle (Max)：100%
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Current Limit, Enable, Frequency Control, Power Good, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：28-HTSSOP
- Grade：-
- Qualification：-
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Overview
The LM5176PWPR is a synchronous four-switch buck-boost controller from Texas Instruments, designed for wide input voltage applications. It operates with an input voltage range of 4.2 V to 55 V and supports output voltages from 800 mV to 55 V. The device features an adjustable switching frequency between 100 kHz and 600 kHz and delivers up to 2 A of output current. It utilizes a non-isolated topology and is housed in a 28-pin HTSSOP package. The component is qualified under the AEC-Q100 standard for automotive use and functions within a temperature range of -40°C to +125°C.
Feature Summary
- Synchronous four-switch buck-boost architecture enables seamless transition between buck and boost modes without external gate drive requirements.
- Wide input voltage capability allows operation across broad supply ranges suitable for automotive cold-crank scenarios.
- Integrated control loop includes programmable switching frequency and duty cycle limits for flexible power stage design.
Applications
- Automotive infotainment systems requiring stable regulation during wide input voltage fluctuations
- Industrial DC-DC conversion where input sources vary significantly above or below output levels
- Battery-powered equipment needing efficient power management across discharge cycles
Procurement Notes
Verify that the ordering suffix matches the required tape-and-reel configuration. Confirm AEC-Q100 qualification status if automotive compliance is mandatory. Check humidity sensitivity classification prior to soldering. Ensure the HTSSOP-28 footprint aligns with PCB layout specifications. Validate operating temperature range against system thermal constraints.
Selection Notes
Select this controller when input voltage exceeds or falls below the desired output level. Compare output current ratings against load requirements to ensure adequate performance. Evaluate switching frequency options to balance efficiency and passive component size. Consider package thermal characteristics for high-power dissipation environments.
Part Context
This component belongs to the LM5176 family of wide VIN synchronous buck-boost controllers. It shares architectural similarities with the LM5175 but offers higher input voltage tolerance. The device complements other Texas Instruments power management solutions by providing versatile topology control for complex power distribution networks.
Replacement Considerations
LM5176QPWPTQ1: Automotive-grade variant with identical electrical specifications and AEC-Q100 qualification. LM5176PWPRB: Alternative reel packaging option for the same functional device. LM5175PWPR: Lower input voltage version (42 V max) suitable for less demanding supply ranges.
