Monolithic Power Systems Inc. MP3416GJ-P

Overview

MP3416GJ-P from Monolithic Power Systems is a low-quiescent-current (9.5 µA), 1.1 A peak-current-mode step-up DC/DC converter with true output disconnect, adjustable low-battery detection (LBI/LBO), and down-mode operation when VIN > VOUT. It operates from 0.86 V input to deliver regulated 1.8–5.5 V outputs, enabling single-cell Li-ion, NiMH, or alkaline battery-powered systems requiring high light-load efficiency and battery state awareness.

For engineers reviewing the MP3416GJ-P datasheet, MP3416GJ-P pinout, MP3416GJ-P application, or MP3416GJ-P equivalent, key selection considerations include its 0.65 µA shutdown current, integrated P-channel synchronous rectifier eliminating external Schottky diodes, pulse-skip mode for <200 µA loads, thermal shutdown at 155 °C, and TSOT23-8 package compatibility with space-constrained portable designs.

Technical Context

The MP3416GJ-P employs peak-current control with variable-frequency boundary conduction mode (BCM) to achieve fast transient response and stable regulation across wide input/output voltage ranges. Its internal control loop integrates soft-start, over-temperature protection, and hiccup-mode short-circuit recovery without external compensation components.

It features dual MOSFET architecture: an NMOS switch (100 mΩ R_DS(ON)) and PMOS synchronous rectifier (800 mΩ R_DS(ON)), plus a dedicated disconnection FET enabling true output isolation during shutdown (<0.65 µA load current). The LBI pin supports resistor-divider-based battery monitoring with 0.4 V threshold and 70 mV hysteresis, while LBO provides open-drain fault signaling.

Key Specifications

Pinout & Package

MP3416GJ-P is housed in an 8-pin TSOT23 package (2.9 mm × 1.6 mm × 0.85 mm), optimized for ultra-compact battery-powered applications. Pin functions are electrically identical to the QFN-8 variant but mapped to TSOT23 pinout.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-up converter applications.

Compared with TPS61099YFFR and MAX17222ETA+, MP3416GJ-P uniquely combines ultra-low IQ, true output disconnect, programmable low-battery detection, and down-mode operation-enabling longer runtime, safer battery management, and higher functional integration in single-chip portable power solutions.

Availability

MP3416GJ-P is available at Aetrix Electronics and suitable for medical wearables, gaming peripherals, remote controllers, and digital retail signage requiring stable component supply, long battery life, and integrated power management features.

Supply support for MP3416GJ-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, with global design centers and manufacturing partnerships focused on energy-efficient power conversion.

The MP3416 belongs to MPS's low-IQ boost converter product line, engineered specifically for battery-powered IoT endpoints, portable medical devices, and consumer electronics where extended runtime and intelligent power management are critical.

FAQ

What is the minimum input voltage required to start up the MP3416GJ-P?

The MP3416GJ-P requires a minimum start-up voltage of 1.25 V (typical) to initiate regulation. Below this threshold, the device remains in UVLO state and will not switch. Once started, it continues operating down to 0.86 V input, enabling deep battery discharge utilization in single-cell systems.

Does the MP3416GJ-P require external compensation components?

No external compensation components are required. The MP3416GJ-P uses internal loop compensation optimized for typical 1.5–3.3 µH inductors and 22 µF output capacitors. Stability is ensured across the full operating range without adding resistors or capacitors to the FB node.

How does the down-mode function behave when VIN exceeds VOUT?

When VIN rises above VOUT − 0.2 V, the internal disconnection FET modulates to allow partial pass-through, reducing switching losses. If VIN exceeds VOUT, the device enters full down-mode, acting as a low-dropout linear regulator with ~200 mV dropout, minimizing heat generation and extending battery life.

Can the LBI/LBO pins be left unconnected if battery detection is not needed?

No - LBI must not be left floating. If unused, connect LBI directly to VIN to disable low-battery detection. Leaving it unconnected may cause erratic LBO behavior or increased leakage. LBO requires an external pull-up resistor to function correctly, even when LBI is tied to VIN.

What is the maximum achievable output current at 3.3 V with 1.8 V input?

At 1.8 V input and 3.3 V output, the MP3416GJ-P delivers up to ~70 mA continuously (derated for thermal limits in TSOT23-8). Peak pulsed current can reach 100 mA for short durations, as confirmed by the "Maximum Output Current vs. Input Voltage" curve in the datasheet (Figure 8).

Is the TSOT23-8 package of MP3416GJ-P RoHS-compliant and lead-free?

Yes - MP3416GJ-P is fully RoHS-compliant, lead-free, and halogen-free per MPS quality assurance standards. The TSOT23-8 package uses matte tin plating and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) for unlimited floor life at ≤30 °C/60% RH.

How does the device handle short-circuit conditions on the output?

Under sustained output short-circuit, the MP3416GJ-P enters hiccup-mode protection: it shuts down for ~300 ms, then attempts restart. This cycle repeats until fault clears, limiting average power dissipation and preventing thermal runaway or permanent damage to the IC or external components.