Monolithic Power Systems Inc. MP2663GC-0000-Z

Overview

MP2663GC-0000-Z from Monolithic Power Systems is a fully integrated, I²C-controlled single-cell Li-ion/Li-polymer battery charger with autonomous power path management. It delivers up to 500mA charge current, regulates system voltage to 5.2V, supports ±0.5% battery voltage accuracy (4.095V typical), and operates from 4.35–5.5V USB/adapter input - enabling simultaneous system powering and battery charging in space-constrained wearables and smart watches.

For engineers reviewing the MP2663GC-0000-Z datasheet, MP2663GC-0000-Z pinout, MP2663GC-0000-Z application, or MP2663GC-0000-Z equivalent, key selection considerations include programmable input current limit (85–455mA), battery UVLO threshold (2.4–3.1V), thermal regulation at 120°C, shipping mode control via INT pin, and WLCSP-9 package compatibility with high-density PCB layouts.

Technical Context

The MP2663GC-0000-Z implements direct power path architecture using two integrated MOSFETs: a 330mΩ LDO switch from IN to SYS and a 100mΩ battery FET from BATT to SYS. This decouples system load from battery charging, enabling independent current regulation and true charge termination without system load interference.

Its I²C interface (400kHz max) provides full register-level control over charging parameters - including VBATT_REG (3.600–4.545V), ICC (8–535mA), pre-charge current (6–27mA), safety timer, NTC temperature window, and junction temperature regulation - while supporting interrupt-driven status reporting and battery disconnect via open-drain INT pin.

Key Specifications

Pinout & Package

MP2663GC-0000-Z is housed in a 1.55mm × 1.55mm WLCSP-9 package with bottom-side ball layout. The ultra-compact footprint supports high-density portable designs and requires no external blocking diode due to integrated power switches.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-cell Li-ion charger with power path applications.

Compared with BQ25618RTWR and MAX77751EWJ+T, the MP2663GC-0000-Z offers superior precision (±0.5% VBATT_REG), lowest quiescent current in shipping mode (4.5µA), and smallest footprint (1.55mm²), making it optimal for ultra-compact, cost-sensitive wearables where thermal and battery longevity constraints dominate.

Availability

MP2663GC-0000-Z is available at Aetrix Electronics and suitable for wearable fitness trackers, smart watches, wireless earbud cases, and portable medical patches requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2663GC-0000-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 across Asia and North America and global manufacturing partnerships.

The MP2663 belongs to MPS's battery management product line, engineered specifically for space-constrained portable electronics requiring autonomous, I²C-programmable charging with robust safety features and minimal external components.

FAQ

What is the minimum input voltage required for MP2663GC-0000-Z to initiate charging?

The MP2663GC-0000-Z requires a minimum input voltage of 4.35V to exit input under-voltage lockout (VIN_UVLO) and begin normal operation. Below this threshold, the IN-to-SYS LDO remains disabled and no charging occurs, even if battery voltage is present.

How does the MP2663GC-0000-Z handle simultaneous system load and battery charging?

It uses direct power path architecture: the IN-to-SYS LDO supplies system load first, and excess current charges the battery via the BATT-to-SYS FET. If system demand exceeds input capability, the battery supplements power - ensuring uninterrupted operation without compromising charge termination accuracy.

Can the battery UVLO threshold be adjusted, and what is its effective range?

Yes, the battery under-voltage lockout (VBATT_UVLO) is I²C-programmable from 2.4V to 3.1V in 0.2V steps via Reg01 bit[2:0]. At default setting (101), it is 2.9V with 190mV hysteresis - preventing deep discharge while allowing recovery from temporary voltage sag.

What happens during thermal regulation, and how is it triggered?

When junction temperature reaches the programmable threshold (default 120°C), the MP2663GC-0000-Z actively reduces charge current to maintain temperature. This regulation is implemented in analog hardware and operates independently of I²C commands or host intervention.

Is external NTC thermistor required for safe operation?

Yes - the NTC pin (B1) must be connected to a negative temperature coefficient thermistor in a resistor divider network. Without valid NTC input, the charger suspends charging regardless of battery voltage or temperature, as per JEITA-compliant safety requirements.

How is shipping mode activated and verified?

Shipping mode is entered by pulling the INT pin low for ≥6 seconds, which disables the battery FET and reduces quiescent current to 4.5µA. Verification is confirmed by measuring <1µA current from BATT pin and observing SYS voltage decay to ~0V when IN is absent.

Does the MP2663GC-0000-Z support automatic recharge after battery voltage drops post-full-charge?

Yes - auto-recharge is enabled by default and triggers when battery voltage falls 120–350mV below VBATT_REG (configurable via Reg04[0]), depending on selected hysteresis setting. This ensures battery remains at full capacity without host firmware intervention.