Monolithic Power Systems Inc. MP2016DJ-LF-Z

Overview

MP2016DJ-LF-Z from Monolithic Power Systems is a 42V-input, 30mA adjustable-output linear regulator in TSOT23-5 package, featuring 12µA quiescent current, ±2% output accuracy, and 1.2V–40V external resistor-programmable output voltage. It delivers stable power to high-voltage battery systems with 50dB PSRR and thermal shutdown protection.

For engineers reviewing the MP2016DJ-LF-Z datasheet, MP2016DJ-LF-Z pinout, MP2016DJ-LF-Z application, or MP2016DJ-LF-Z equivalent, key selection criteria include wide 4V–42V input range, ultra-low 12µA operating current, <1.5µA shutdown current, 700mV typical dropout at 30mA, and TSOT23-5 footprint compatibility for space-constrained battery-powered designs.

Technical Context

The MP2016DJ-LF-Z implements an NPN-based pass transistor architecture with external feedback control via the FB pin (1.23V reference), enabling precise output voltage setting across 1.2V–40V. Its internal bandgap reference and error amplifier maintain ±2% output regulation over temperature and line/load variations.

It integrates active current limiting (50mA peak) and thermal shutdown with +150°C trip point and +130°C hysteresis, ensuring safe operation under overload or ambient temperature extremes. Shutdown logic responds to SHDN pin voltage thresholds (VIH = 1.8V, VIL = 0.22V) with <1.5µA supply current in disabled state.

Key Specifications

Pinout & Package

MP2016DJ-LF-Z is housed in a 5-pin TSOT23-5 package (2.9mm × 1.6mm × 0.9mm), with exposed pad connected to GND for thermal performance. Pin 1 (VIN) accepts 4–42V input; Pin 2 (GND) and exposed pad form common ground return; Pin 3 (OUT) delivers regulated output; Pin 4 (FB) senses output via resistor divider; Pin 5 (SHDN) controls enable/disable with TTL-compatible logic levels.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar adjustable linear regulator applications.

Compared with LT3012BEMS#TRPBF and TSP50C33DR, MP2016DJ-LF-Z uniquely combines 42V input, 1.2V–40V adjustability, 12µA IQ, and integrated SHDN in TSOT23-5-enabling single-SKU support for multi-rail battery systems with minimal board area and longest runtime.

Availability

MP2016DJ-LF-Z is available at Aetrix Electronics and suitable for battery-powered medical sensors, smart battery management systems, and industrial handheld testers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MP2016DJ-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 expertise in DC/DC converters, LED drivers, and linear regulators for industrial, automotive, and computing markets.

The MP2016 product line targets high-input-voltage, ultra-low-power linear regulation-designed specifically for battery-powered systems where extended runtime, wide VIN tolerance, and small footprint are critical.

FAQ

What is the minimum input voltage required for MP2016DJ-LF-Z to regulate a 5V output?

The MP2016DJ-LF-Z requires at least 5.7V input to sustain 5V output at 30mA load, based on its 700mV typical dropout voltage. At lighter loads, dropout decreases-e.g., ~300mV at 1mA-allowing regulation down to ~5.3V input. Always verify against worst-case 900mV max dropout in thermal or process corners.

Can MP2016DJ-LF-Z be used with ceramic output capacitors smaller than 1µF?

No. The datasheet specifies 1µF–10µF X5R/X7R ceramic output capacitance for guaranteed stability. Capacitors below 1µF risk oscillation or poor transient response due to insufficient phase margin; Y5V or Z5U types are not recommended due to severe capacitance loss over temperature and bias.

How does the SHDN pin behave when left floating?

The SHDN pin has an internal pull-down resistor (~100kΩ), so it defaults to logic LOW when unconnected-placing the device in shutdown mode with <1.5µA supply current. For automatic startup, connect SHDN directly to VIN; for controlled enable, drive with an open-drain or push-pull logic signal referenced to GND.

Is the exposed pad on the TSOT23-5 package electrically connected?

Yes-the exposed pad on MP2016DJ-LF-Z's TSOT23-5 package is internally connected to GND and must be soldered to a PCB ground plane. This connection is mandatory for thermal dissipation and electrical stability; omitting it risks thermal shutdown during sustained 30mA operation and degraded PSRR performance.

What is the maximum allowable output capacitance?

The datasheet does not specify an upper limit for output capacitance, but recommends 1µF–10µF for optimal transient response and stability. Larger values (e.g., 22µF) are permissible and improve load-step immunity, provided the ESR remains low (<10mΩ) and the capacitor is X5R/X7R dielectric to avoid capacitance drift with temperature or DC bias.

Does MP2016DJ-LF-Z support reverse polarity protection?

No. The MP2016DJ-LF-Z lacks built-in reverse-input protection. Applying negative voltage to VIN relative to GND violates the –0.3V absolute maximum rating and may cause permanent damage. External protection-such as a series Schottky diode or ideal diode controller-is required in applications prone to battery reversal or hot-plug events.

How accurate is the FB pin reference voltage over temperature?

The FB pin reference is specified as 1.23V ±2% over –40°C to +85°C ambient, with typical variation of ±0.5% across that range. At extreme temperatures, deviation reaches ±0.025V (±2%)-e.g., 1.205V at –40°C and 1.254V at +85°C-directly impacting output voltage accuracy when using standard resistor dividers.