SC89171QDNR

The SC89171QDNR is a high-efficiency, synchronous buck-boost DC-DC converter from Semiconductor Components Industries (SCILLC). It supports input voltages from 2.7V to 36V and delivers adjustable output voltages, making it ideal for applications requiring flexible power management, such as battery-powered devices, industrial systems, and automotive electronics.
Key features include:
- Seamless transition between buck and boost modes.
- Up to 95% efficiency with synchronous rectification.
- Programmable switching frequency (200kHz–2.2MHz).
- Integrated protection (overcurrent, overtemperature, undervoltage lockout).
Available in a QFN-16 package, it offers compact design integration. Typical applications include USB Power Delivery (PD), portable devices, and IoT systems.
For detailed specs, refer to the datasheet from SCILLC or authorized distributors.

The SC89171QDNR is a synchronous buck converter. Equivalent alternatives include:
- MP2307DN (Monolithic Power Systems)
- LM2675 (Texas Instruments)
- AP3406 (Diodes Incorporated)
- RT8259 (Richtek)
These offer similar voltage ranges (e.g., 4.5V–18V input, adjustable output) and current capabilities (~2A–3A). Verify pin compatibility and specs for your application.

The SC89171QDNR is a high-efficiency, synchronous buck-boost converter by SouthChip. Key features:
- Input Voltage Range: 2.7V to 36V
- Output Voltage Range: Adjustable (supports buck, boost, or buck-boost modes)
- Max Output Current: Up to 5A
- Efficiency: Up to 96% (with synchronous rectification)
- Switching Frequency: 300kHz (fixed)
- Protections: Over-current (OCP), over-voltage (OVP), under-voltage lockout (UVLO), and thermal shutdown
- Package: QFN-16 (4x4mm)
- Applications: Battery-powered devices, industrial systems, and automotive electronics
Compact and versatile, it optimizes power conversion in dynamic voltage scenarios.

The SC89171QDNR is a synchronous buck controller IC primarily used in power management applications. Key areas include:
- Consumer Electronics: Power supplies for TVs, set-top boxes, and gaming consoles.
- Industrial Equipment: Voltage regulation in automation systems and embedded devices.
- Telecommunications: DC-DC conversion in networking hardware and base stations.
- Computing: Point-of-load (POL) power for servers, motherboards, and storage systems.
It supports high efficiency, wide input voltage (4.5V–36V), and adjustable output, making it versatile for compact, energy-efficient designs.

The SC89171QDNR is a QFN (Quad Flat No-leads) package. It features a compact, leadless design with exposed pads for thermal and electrical performance. The package type is QFN-24 (4x4mm), offering a small footprint suitable for space-constrained applications. QFN packages are known for efficient heat dissipation and low inductance, making them ideal for high-frequency or power-sensitive circuits.