Overview
The NCP51510MNTAG, produced by onsemi, is a 3 Amp VTT (Voltage Termination) termination regulator specifically designed for Double Data Rate (DDR) memory applications. This regulator is optimized for low input voltage and low-noise systems, making it ideal for space-constrained designs. It supports DDR, DDR-2, DDR-3, and DDR-4 memory termination and is suitable for various applications including desktop PCs, notebooks, servers, and networking equipment.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VTT Output Voltage Range | 0.5 to 1.5 | V |
| PVCC Input Voltage Range (Power) | 1.1 to 3.6 | V |
| VCC Input Voltage Range (Analog) | 2.7 to 3.6 | V |
| Load Current Capability | ±3 A (Typ) | A |
| Operating Ambient Temperature Range | −40 to +125 | °C |
| VTT Load Regulation | −4 to +4 | mV |
| VTT Line Regulation | 1 mV | mV |
| Feedback-Voltage Error | −17 to +17 | mV |
| VTT Output MOSFET RDS(on) | 140 to 250 | mΩ |
| Thermal Shutdown Temperature | 165 °C | °C |
Key Features
- Generate DDR Memory Termination Voltage (VTT) for DDR, DDR-2, DDR-3, and DDR-4 applications.
- Supports loads up to ±3 A with integrated MOSFETs and thermal shutdown protection.
- Fast load-transient response with a minimum VTT load capacitance of 10 μF for output stability.
- PGOOD output pin to monitor the status of VTT output regulation.
- SS input pin for suspend/shutdown control.
- VRI input reference for flexible voltage tracking.
- VTTS input for remote sensing (Kelvin connection).
- Built-in soft-start and under-voltage lockout (UVLO) protection.
- Small, low-profile 10-pin, 3 x 3 mm DFN package with exposed pad for thermal connection.
Applications
- DDR memory termination in desktop PCs, notebooks, and workstations.
- Servers and networking equipment.
- Telecom/Datacom and GSM base stations.
- Graphics processor core supplies.
- Set-top boxes, LCD/PDP TVs, and copiers/printers.
- Power supplies for chipsets/RAM as low as 0.5 V.
Q & A
- What is the primary function of the NCP51510MNTAG?
The NCP51510MNTAG is a source/sink termination regulator designed to generate and regulate the VTT (Voltage Termination) for DDR memory applications.
- What are the supported DDR memory types?
The NCP51510MNTAG supports DDR, DDR-2, DDR-3, and DDR-4 memory types.
- What is the load current capability of the NCP51510MNTAG?
The NCP51510MNTAG can handle loads up to ±3 A.
- What is the minimum VTT load capacitance required for output stability?
A minimum VTT load capacitance of 10 μF is required for output stability.
- What is the purpose of the PGOOD output pin?
The PGOOD output pin monitors the status of the VTT output regulation and indicates when the VTTS sense input is within the specified range of the VRI reference input.
- How does the SS input pin function?
The SS input pin controls the suspend/shutdown mode. When driven high, the regulator begins normal operation, and when driven low, the VTT output is discharged to PGND through an internal MOSFET.
- What is the thermal shutdown temperature of the NCP51510MNTAG?
The thermal shutdown temperature is 165 °C, with a hysteresis of 15 °C.
- What package type is the NCP51510MNTAG available in?
The NCP51510MNTAG is available in a 10-pin, 3 x 3 mm DFN package with an exposed pad for thermal connection.
- Is the NCP51510MNTAG Pb-free and RoHS compliant?
Yes, the NCP51510MNTAG is Pb-free and RoHS compliant.
- What are some common applications of the NCP51510MNTAG?
Common applications include DDR memory termination in desktop PCs, servers, networking equipment, and graphics processor core supplies.
