Overview
The NCV51200MNTXG, produced by onsemi, is a source/sink Double Data Rate (DDR) termination regulator designed for low input voltage and low-noise systems. This regulator is optimized for applications where space is a critical factor. It features a fast transient response and requires a minimum output capacitance of 20 μF. The NCV51200MNTXG supports remote sensing and all power requirements for DDR VTT bus termination, making it suitable for various memory and processor core applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Input Voltage Rails | - | - | 2.5 V, 3.3 V, 5 V | V |
| PVCC Voltage Range | 1.1 | - | 3.5 | V |
| Operating Temperature Range | -40 | - | 125 | °C |
| Supply Current (VCC) | 0.7 | 1 | - | mA |
| Shutdown Current (VCC) | 65 | 80 | 400 | μA |
| VTT Output Voltage Tolerance | -25 | - | 25 | mV |
| Source Current Limit | 3 | - | 4.5 | A |
| Sink Current Limit | 3.5 | - | 5.5 | A |
| Thermal Shutdown Temperature | - | - | 150 | °C |
Key Features
- Integrated Power MOSFETs for efficient current handling.
- Fast load-transient response with minimal output capacitance requirement (20 μF).
- Remote sensing function (VTTS) for accurate voltage regulation.
- PGOOD logic output pin to monitor VTT regulation.
- EN logic input pin for shutdown control.
- VRI reference input allows for flexible input tracking.
- Built-in soft start, under-voltage lockout, and over-current limit.
- Thermal shutdown protection with hysteresis.
- Small, low-profile 10-pin DFN package with exposed pad for enhanced thermal performance.
- AEC-Q100 qualified and PPAP capable for automotive and other critical applications.
Applications
- DDR memory termination (DDR1, DDR2, DDR3, LPDDR3, DDR4).
- 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.
- Chipset/RAM supplies as low as 0.5 V.
- Active bus termination.
Q & A
- What is the primary function of the NCV51200MNTXG?
The NCV51200MNTXG is a source/sink Double Data Rate (DDR) termination regulator designed for low input voltage and low-noise systems.
- What are the supported input voltage rails for the NCV51200MNTXG?
The regulator supports 2.5 V, 3.3 V, and 5 V input voltage rails.
- What is the minimum output capacitance required for the NCV51200MNTXG?
The minimum output capacitance required is 20 μF.
- Does the NCV51200MNTXG support remote sensing?
Yes, it supports remote sensing through the VTTS pin.
- What is the purpose of the PGOOD pin on the NCV51200MNTXG?
The PGOOD pin is an open-drain output that monitors the VTT regulation and indicates when the output is within the specified voltage range.
- How does the thermal shutdown protection work on the NCV51200MNTXG?
The device shuts down when the junction temperature exceeds 150°C and resumes operation when the temperature falls back to 125°C.
- What is the package type and dimensions of the NCV51200MNTXG?
The device is available in a 10-pin DFN package with a 3x3 mm footprint and an exposed pad for thermal connection.
- Is the NCV51200MNTXG suitable for automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other critical applications.
- What are the typical applications of the NCV51200MNTXG?
It is used in DDR memory termination, desktop PCs, notebooks, servers, telecom/datacom equipment, graphics processor core supplies, and other similar applications.
- How does the soft-start feature work on the NCV51200MNTXG?
The soft-start feature ensures a controlled startup by gradually increasing the output voltage, preventing large inrush currents and reducing the risk of voltage overshoot.
