LM5177DCPR

The LM5177DCPR is a synchronous buck-boost controller from Texas Instruments, designed for wide input voltage (4V to 42V) and output voltage (1.3V to 55V) applications. It efficiently regulates power in bidirectional DC-DC converters, making it ideal for battery charging/discharging, automotive, and industrial systems.
Key features:
- Peak current-mode control for fast transient response.
- Adjustable switching frequency (50kHz–500kHz).
- Integrated MOSFET drivers (up to 10A gate drive).
- Programmable soft-start & protection (OVP, UVP, OCP).
- Supports buck, boost, and buck-boost modes seamlessly.
Packaged in a 10-pin HTSSOP (DCPR), it offers robust thermal performance. Applications include 12V/48V automotive systems, telecom power supplies, and renewable energy storage.
For more details, refer to the TI datasheet (SNVSBQ5).

Equivalent products to the LM5177DCPR (a bidirectional current controller) include:
- LM5175 (similar bidirectional controller, different specs)
- LTC3871 (bidirectional DC/DC controller from Analog Devices)
- ISL78264 (bidirectional controller from Renesas)
- TPS43000 (bidirectional buck-boost controller from TI, but less feature-matched)
Check datasheets for exact compatibility.

The LM5177DCPR is a 16-pin (HTSSOP) synchronous buck/boost controller IC. Key functions include:
- Input Voltage Range: 3.5V to 42V
- Output Voltage Range: Adjustable (buck or boost mode)
- Switching Frequency: Adjustable (100kHz to 600kHz)
- Features:
- Bidirectional power flow
- Programmable current limits
- Integrated gate drivers
- Synchronous rectification
Pin Functions (Selected):
- VIN, GND: Power input & ground
- BOOT, SW: Gate drive & switch node
- FB: Feedback for output regulation
- COMP: Error amplifier compensation
- EN: Enable control
Used in battery chargers, automotive, and industrial power systems.

The LM5177DCPR comes in a PowerPAD HTSSOP-20 package. This surface-mount package features a thermally enhanced design with an exposed pad for improved heat dissipation, making it suitable for high-current applications. The package dimensions are 6.5mm x 4.4mm with a 1.2mm height. It is RoHS-compliant and designed for efficient power management in compact PCB layouts.