Monolithic Power Systems Inc. MP2007DH-LF

Overview

MP2007DH-LF from Monolithic Power Systems is a 3A sink/source DDR memory termination regulator with integrated VTT and buffered VTTREF outputs, designed for DDR2/DDR3 systems requiring precise VDDQ/2 tracking (±20mV), Kelvin sensing, and fast transient response using only 20µF ceramic output capacitance. It operates from 1.3V–6.0V VDDQ input and requires 4.5V–5.5V VDRV bias.

For engineers reviewing the MP2007DH-LF datasheet, MP2007DH-LF pinout, MP2007DH-LF application, or MP2007DH-LF equivalent, this device is selected for high-accuracy DDR bus termination where thermal shutdown (150°C), ±20mV VTT/VTTREF accuracy, and 3A current capability under tight PCB space constraints are critical design requirements.

Technical Context

The MP2007DH-LF implements a linear LDO architecture with dual regulation paths: one for VTT (3A sink/source) and one buffered VTTREF output tracking VREF/2. Its control logic is powered by VDRV and enables operation only when both VDRV and VDDQ exceed their respective UVLO thresholds (4.1V and 0.9V).

Kelvin sensing via VTTSEN ensures accurate remote voltage regulation at the DDR load point, while internal soft-start (7–9 µs max), overcurrent limiting (3.5A trip), and thermal shutdown (150°C with 25°C hysteresis) provide robust protection during dynamic DDR memory transitions.

Key Specifications

Pinout & Package

The MP2007DH-LF is housed in an 8-pin MSOP with exposed thermal pad (MSOP8E), optimized for thermal dissipation (θ_JA = 80°C/W, θ_JC = 12°C/W on 4-layer board) and low-profile DDR module integration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DDR memory termination regulator applications.

Compared with TPS51200DRCR and ISL6537CRZ, the MP2007DH-LF uniquely integrates bidirectional 3A termination, Kelvin sensing, and buffered VTTREF in one MSOP8E package-reducing footprint by >40% and improving VTT accuracy under dynamic load conditions.

Availability

MP2007DH-LF is available at Aetrix Electronics and suitable for DDR2/DDR3 notebook memory termination, ACPI-compliant power sequencing, and high-density embedded DDR subsystems requiring stable component supply and RoHS-compliant packaging.

Supply support for MP2007DH-LF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with core expertise in DC/DC conversion, LED drivers, and memory power solutions.

The MP2007 product line targets DDR memory interface power management, delivering integrated, space-efficient termination regulators that replace multi-component discrete solutions in space- and thermal-constrained computing platforms.

FAQ

What is the maximum allowable VDDQ voltage for MP2007DH-LF?

The absolute maximum VDDQ voltage is 6.0V, but the recommended operating range is 1.3V to 6.0V. Exceeding 6.0V may damage the device due to internal gate oxide stress. Operation at 6.0V is permissible only if thermal limits (T_J ≤ 150°C) are maintained under worst-case load and ambient conditions.

Does MP2007DH-LF support DDR4 memory interfaces?

No. The MP2007DH-LF is specified for DDR2 and DDR3 termination only. DDR4 requires VDDQ = 1.2V and tighter VTT accuracy (±15mV), which exceeds the device's ±20mV specification and 1.3V minimum VDDQ input rating. DDR4 designs require newer regulators such as MP2012 or TPS51216.

How does Kelvin sensing improve VTT regulation accuracy?

Kelvin sensing uses dedicated VTTSEN and GND pins to measure voltage directly at the DDR memory termination point, eliminating errors caused by PCB trace resistance between the regulator output and load. This maintains ±20mV accuracy even with 50mΩ of series trace impedance, critical for signal integrity at DDR3 speeds.

Can MP2007DH-LF operate with VREF = 1.25V (LPDDR2)?

No. The device is characterized for VREF = 1.5V and 1.8V only. Electrical specifications-including VTTREF accuracy (±15mV/±18mV) and REF input resistance (40–75kΩ)-are not guaranteed at 1.25V. LPDDR2 applications require regulators explicitly rated for 1.25V VREF, such as MP2005.

What is the purpose of the VDRV pin, and why must it be 5V?

VDRV powers the internal control logic, reference dividers, and gate drivers. Its 4.5V–5.5V range ensures stable operation of precision analog blocks; deviation outside this range causes UVLO shutdown or degraded VTTREF accuracy. A 5V rail is standard in DDR host systems and provides optimal noise margin for internal comparators.

Is the exposed thermal pad electrically connected to GND?

Yes. Pin 3 (GND) and the exposed pad are internally shorted and must be soldered together to the same PCB ground plane. This connection is mandatory for both electrical functionality (reference return path) and thermal performance (θ_JC = 12°C/W). Floating or isolated pads cause thermal runaway and regulation failure.