Overview
The NXP MC34716EPR2, formerly produced by Freescale Semiconductor, is a highly integrated, space-efficient, and low-cost dual synchronous buck switching regulator. This device is designed to provide a complete power supply solution for Double-Data-Rate (DDR) memories. It features integrated N-channel power MOSFETs and supports DDR, DDR2, DDR3, and low-power DDR3/DDR4 memory buses. The MC34716EPR2 is housed in a Pb-free, thermally enhanced 26-pin exposed pad QFN package, making it suitable for high-performance point-of-load (PoL) applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Input Voltage Range | 3.0 V to 6.0 V |
| Output Voltage Range | 0.6 V to 3.6 V |
| Output Current Capability | Channel 1: 5.0 A (source only), Channel 2: 3.0 A (sink and source) |
| Switching Frequency Range | 200 kHz to 1.0 MHz (programmable) |
| Output Voltage Accuracy | ±1% |
| Integrated MOSFETs | 50 mΩ N-channel power MOSFETs |
| Operating Temperature Range | -40 °C to 85 °C |
| Package Type | 26-pin QFN with exposed pad |
Key Features
- Highly integrated and space-efficient design
- Dual synchronous buck switching regulator with integrated N-channel power MOSFETs
- Programmable switching frequency and soft start timing
- Over-current limit, short-circuit protection, thermal shutdown, and output over-voltage/under-voltage detection
- Active low power good output signal and standby/shutdown inputs
- Buffered output reference voltage (VREFOUT) for enhanced noise immunity and load stability
- Support for DDR memory buses including DDR, DDR2, DDR3, and low-power DDR3/DDR4
Applications
- Power supply solutions for Double-Data-Rate (DDR) memories
- Point-of-load (PoL) power supply in high-performance systems
- Memory chipset power supply, including VDDQ and VTT (termination voltage) for modern data buses
- Systems requiring high current drive capability and tight output voltage regulation
Q & A
- What is the primary function of the MC34716EPR2?
The MC34716EPR2 is a dual synchronous buck switching regulator designed to provide a complete power supply solution for Double-Data-Rate (DDR) memories.
- What is the input voltage range of the MC34716EPR2?
The input voltage range is from 3.0 V to 6.0 V.
- What are the output current capabilities of the MC34716EPR2?
Channel 1 can source up to 5.0 A, while Channel 2 can sink and source up to 3.0 A.
- What is the switching frequency range of the MC34716EPR2?
The switching frequency is programmable from 200 kHz to 1.0 MHz.
- What type of protection features does the MC34716EPR2 offer?
The device includes over-current limit, short-circuit protection, thermal shutdown, and output over-voltage/under-voltage detection.
- What is the purpose of the buffered output reference voltage (VREFOUT)?
The buffered output reference voltage enhances immunity to noise and load changes.
- What types of DDR memory buses does the MC34716EPR2 support?
The device supports DDR, DDR2, DDR3, and low-power DDR3/DDR4 memory buses.
- What is the package type of the MC34716EPR2?
The device is housed in a 26-pin QFN package with an exposed pad.
- What is the operating temperature range of the MC34716EPR2?
The operating temperature range is from -40 °C to 85 °C.
- Does the MC34716EPR2 have standby and shutdown features?
Yes, the device includes active low standby and shutdown inputs.
