Monolithic Power Systems Inc. MP2004DJ-SJ-LF-P

Overview

MP2004DJ-SJ-LF-P from Monolithic Power Systems is a dual-channel, low-noise, high-PSRR linear regulator in TSOT23-6 package, delivering 3.3V and 2.5V outputs with ±1% accuracy, 95μVRMS noise, and 69dB PSRR at 100Hz-designed for battery-powered handheld equipment requiring independent channel enable control and fast transient response.

For engineers reviewing the MP2004DJ-SJ-LF-P datasheet, MP2004DJ-SJ-LF-P pinout, MP2004DJ-SJ-LF-P application, or MP2004DJ-SJ-LF-P equivalent, this page provides verified electrical parameters, validated dual-LDO timing behavior, EN1/EN2 logic-level enable thresholds, thermal shutdown hysteresis, and real-world load-transient performance under 2.2μF ceramic output capacitance.

Technical Context

The MP2004DJ-SJ-LF-P integrates two independent PMOS-based LDOs with separate enable inputs (EN1/EN2), enabling per-channel power sequencing and zero-quiescent-current shutdown when both enables are low. Each regulator maintains regulation down to 110mV dropout at 100mA and supports stable operation with 0.47–10μF ceramic output capacitors having ESR <1.2Ω.

Its internal thermal protection activates at 140°C with 10°C hysteresis, and current limiting caps output at 450mA per channel-ensuring safe operation during overload while preserving 200mA continuous delivery per rail. The device operates across –40°C to +85°C ambient with junction temperature limited to +125°C for reliability.

Key Specifications

Pinout & Package

TSOT23-6 package: 2.9mm × 1.6mm × 0.85mm body, 0.65mm lead pitch, exposed pad not electrically connected. Thermal resistance θJA = 220°C/W on 4-layer JEDEC board.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6221B332MR-G and ADP5070ACPZ-R7, the MP2004DJ-SJ-LF-P uniquely delivers matched 200mA dual-rail regulation with per-channel enable, 95μVRMS noise, and 2.5–6.0V input compatibility-making it optimal for space-constrained, battery-powered dual-voltage systems where integration and sequencing control outweigh absolute minimum noise or sub-2.5V operation.

Availability

MP2004DJ-SJ-LF-P is available at Aetrix Electronics and suitable for cellular phone baseband, laptop USB peripherals, handheld medical sensor hubs, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term sourcing.

Supply support for MP2004DJ-SJ-LF-P 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, headquartered in California and serving global power management markets since 1997.

The MP2004 belongs to MPS's low-noise, high-PSRR linear regulator product line-designed specifically for battery-powered portable electronics needing dual independent rails with ultra-low quiescent current and fast transient response.

FAQ

What are the exact output voltages programmed in MP2004DJ-SJ-LF-P?

The MP2004DJ-SJ-LF-P is factory-configured with Channel 1 (VOUT1) set to 3.3V and Channel 2 (VOUT2) set to 2.5V. These values are trimmed during production and cannot be adjusted externally-no resistive feedback network is required or supported. Output accuracy is guaranteed at ±1% across load, line, and temperature conditions.

Can MP2004DJ-SJ-LF-P operate with input voltage below 2.5V?

No-the MP2004DJ-SJ-LF-P has a specified minimum input voltage of 2.5V per the Absolute Maximum Ratings and Recommended Operating Conditions. Attempting operation below 2.5V may result in loss of regulation, especially on the 2.5V output rail, due to insufficient headroom for the 110mV typical dropout voltage at 100mA load.

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 backup battery scenarios), the internal PMOS parasitic body diode becomes forward-biased. An external Schottky diode (anode to VIN, cathode to VOUT) is recommended per the datasheet to block reverse current and prevent misoperation or damage.

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

Using θJA = 220°C/W and TJ(MAX) = 125°C, maximum allowable power dissipation at TA = 85°C is (125 − 85) / 220 = 182mW. This corresponds to worst-case conditions: e.g., VIN = 6.0V, VOUT1 = 3.3V, IOUT1 = 200mA → P = (6.0 − 3.3) × 0.2 = 540mW, exceeding limit-so derating or improved thermal layout is mandatory for high-input, high-load operation.

Does MP2004DJ-SJ-LF-P support ceramic output capacitors smaller than 0.47μF?

No-the datasheet specifies a minimum output capacitance of 0.47μF with ESR <1.2Ω for guaranteed stability. Using smaller values risks oscillation or poor transient response. Ceramic capacitors in the 2.2–4.7μF range are recommended for optimal noise and load-step performance, as validated in typical application circuits.

How does thermal shutdown behave during sustained overload?

When junction temperature reaches 140°C, the MP2004DJ-SJ-LF-P disables both LDOs. After cooling by 10°C (to ~130°C), it automatically resumes regulation. This cycling prevents permanent damage but causes output voltage interruption-designers must ensure system-level fault handling or reduce load/thermal stress to avoid repeated shutdown events.

Are EN1 and EN2 compatible with 1.8V logic levels?

No-EN1 and EN2 require VIH ≥1.6V to guarantee turn-on, but the datasheet specifies full logic compatibility only for VIN-supplied enable signals (2.5–6.0V). Driving EN pins directly from 1.8V GPIO may result in marginal or inconsistent activation; a level-shifter or pull-up to VIN is recommended for reliable operation.