Monolithic Power Systems Inc. MP2004DJ-MG-LF-Z

Overview

MP2004DJ-MG-LF-Z from Monolithic Power Systems is a dual-channel, low-noise, high-PSRR linear regulator with fixed 2.8V and 1.8V outputs, ±1% accuracy, 200mA per channel output capability, and 95μVRMS output noise-designed for power-sensitive portable electronics such as netbooks and hand-held devices.

For engineers reviewing the MP2004DJ-MG-LF-Z datasheet, MP2004DJ-MG-LF-Z pinout, MP2004DJ-MG-LF-Z application, or MP2004DJ-MG-LF-Z equivalent, key selection criteria include per-channel enable control (EN1/EN2), 69dB PSRR at 100Hz, 110mV dropout at 100mA, thermal shutdown at 140°C, and TSOT23-6 package compatibility with space-constrained PCB layouts.

Technical Context

The MP2004DJ-MG-LF-Z integrates two independent PMOS-based LDOs with separate enable inputs (EN1/EN2), enabling selective channel shutdown to reduce system quiescent current to 0.03μA. Each regulator maintains regulation across 2.5V–6.0V input while delivering stable 2.8V and 1.8V outputs with load-independent accuracy.

Its internal architecture features current limiting (450mA per channel), thermal shutdown with 10°C hysteresis, and fast transient response optimized for ceramic capacitors ≥0.47μF and ESR <1.2Ω-making it suitable for dynamic load environments in battery-powered systems without requiring external compensation.

Key Specifications

Pinout & Package

MP2004DJ-MG-LF-Z is housed in a 6-pin TSOT23-6 package (0.95mm pitch, 2.8mm × 2.9mm footprint) with exposed pad for thermal dissipation. Pin 1 is bottom-left when reading top mark "6L" left-to-right.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-LDO applications.

Compared with TPS70248PWP and ADP5070ACPZ-R7, MP2004DJ-MG-LF-Z delivers superior noise performance (95μVRMS vs. ≥120μVRMS), smaller footprint (TSOT23-6 vs. TSSOP-20/QFN-16), and tighter output accuracy (±1% vs. ±2%), making it optimal for space- and noise-critical portable designs.

Availability

MP2004DJ-MG-LF-Z is available at Aetrix Electronics and suitable for smartphone baseband power, netbook core/I/O rails, wireless LAN modules, and hand-held medical instruments requiring stable component supply with RoHS-compliant, tape-and-reel packaging.

Supply support for MP2004DJ-MG-LF-Z 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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP2004 product line targets ultra-low-noise, high-PSRR dual-LDO applications in battery-powered portable electronics-emphasizing minimal footprint, fast transient response, and robust thermal/current protection.

FAQ

What are the exact output voltages of MP2004DJ-MG-LF-Z?

The MP2004DJ-MG-LF-Z provides fixed 2.8V on OUT1 (Pin 6) and 1.8V on OUT2 (Pin 1), both with ±1% accuracy across temperature and load. These values are laser-trimmed at wafer test and do not require external resistors-confirmed by MPS ordering guide code "M" (2.8V) and "G" (1.8V).

Can MP2004DJ-MG-LF-Z operate with input voltage below 2.5V?

No. The absolute minimum recommended input voltage is 2.5V per the datasheet's Recommended Operating Conditions. At 2.5V input, the 2.8V output cannot be sustained due to dropout-minimum VIN for 2.8V output is 2.91V (2.8V + 110mV dropout). Operation below 2.5V risks regulation loss and undefined behavior.

Is an external Schottky diode required for reverse current protection?

Yes, when VOUT exceeds VIN by more than ~0.3V (e.g., during hot-swap or battery switchover), the internal PMOS body diode becomes forward-biased. An external Schottky (e.g., BAT54) between IN and each OUT prevents reverse current flow and ensures reliable operation-explicitly recommended in the Application Information section.

What is the maximum allowable power dissipation at 85°C ambient?

Using θJA = 220°C/W and TJ(MAX) = 125°C, maximum continuous power dissipation at TA = 85°C is (125 – 85)/220 = 0.182W. This corresponds to ~182mW total across both channels-e.g., 200mA at 0.91V differential (VIN = 3.71V for 2.8V output). Exceeding this triggers thermal shutdown.

How does EN1/EN2 sequencing affect startup behavior?

EN1 and EN2 are independent active-high enables. If EN1 rises before EN2, only OUT1 (2.8V) powers up first; OUT2 (1.8V) remains off until EN2 asserts. This allows controlled power sequencing-e.g., powering core logic before I/O-without external timing circuitry, as verified in the Block Diagram and Operation sections.

Does MP2004DJ-MG-LF-Z require output capacitors with specific ESR?

Yes. The datasheet specifies stable operation with ceramic capacitors having ESR <1.2Ω (Figure 2). Capacitors outside this range-especially high-ESR tantalum-can cause oscillation or poor transient response. Minimum 0.47μF is required; 2.2μF is typical for optimal PSRR and noise performance.

What top-marking identifies MP2004DJ-MG-LF-Z on the physical device?

The top marking is "6L", as specified in the Ordering Information table and Package Reference diagram. This 2-character code uniquely identifies the 2.8V/1.8V output variant in the TSOT23-6 package and matches the "MG" suffix in the full part number.