Monolithic Power Systems Inc. MP2696AGQ-0000-Z

Overview

MP2696AGQ-0000-Z from Monolithic Power Systems is an I²C-controlled, single-cell Li-ion/Li-polymer switching charger with integrated power-path management and 3.6A boost converter. It delivers programmable 500mA–3.6A charge current, ±0.5% accurate 3.6V–4.45V charge voltage regulation, and supports USB BC1.2/non-standard adapter detection in portable power banks and sub-battery systems.

For engineers reviewing the MP2696AGQ-0000-Z datasheet, MP2696AGQ-0000-Z pinout, MP2696AGQ-0000-Z application, or MP2696AGQ-0000-Z equivalent, this device enables precise battery charging, bidirectional power routing (IN→SYS pass-through, battery→SYS boost), real-time JEITA temperature profiling, and fault-aware system integration via I²C register access and open-drain interrupt signaling.

Technical Context

The MP2696A implements a synchronous buck topology for charging and synchronous boost for system power generation, with dual FETs (Q1/Q2) enabling seamless IN-to-SYS pass-through. Its I²C interface provides full control over charge parameters (ICC, VBATT_REG, ITERM), input limits (IIN_LIM, VIN_MIN), and JEITA thresholds (VCOLD, VCOOL, VWARM, VHOT).

It integrates analog sensing (IB for battery current, VRNTC/NTC for thermistor biasing), USB DP/DM interface for adapter classification, and safety-critical hardware blocks including thermal shutdown (150°C), input OVP (6V/11V), and SYS short-circuit protection - all monitored via status/fault registers and signaled through the INT pin.

Key Specifications

Pinout & Package

MP2696AGQ-0000-Z is housed in a thermally enhanced QFN-21 (3mm × 3mm) package with exposed thermal pad (PGND-connected), optimized for compact portable designs requiring high power density and low thermal resistance (θJA = 50°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar switching battery charger with power-path and boost applications.

Compared with BQ25618RTWR and IP2326, MP2696AGQ-0000-Z uniquely combines 3.6A bidirectional power conversion, full I²C configurability, USB adapter identification, and programmable JEITA - making it optimal for advanced portable systems requiring adaptive, host-managed power management.

Availability

MP2696AGQ-0000-Z is available at Aetrix Electronics and suitable for power banks, tablet sub-battery modules, wireless earbud cases, and industrial handheld scanners requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for MP2696AGQ-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 power management ICs, with design centers in the US, China, and Taiwan, and global distribution since 1997.

The MP2696A belongs to MPS's highly integrated battery management product line, engineered specifically for portable electronics requiring simultaneous charging, power-path arbitration, and high-current boost functionality in space-constrained form factors.

FAQ

What is the maximum continuous boost output current of MP2696AGQ-0000-Z?

The MP2696AGQ-0000-Z supports up to 3.6A continuous boost output current at SYS, programmable via I²C register IOLIM[3:0]. This is verified under thermal conditions with adequate PCB copper area and ambient temperature ≤40°C, as specified in the Absolute Maximum Ratings table (page 6) and Electrical Characteristics (page 8).

Does MP2696AGQ-0000-Z support USB Battery Charging (BC) 1.2 detection?

Yes - MP2696AGQ-0000-Z integrates dedicated DP/DM pins with built-in comparators and deglitch logic to detect SDP, CDP, and DCP sources per USB BC1.2 specification, plus non-standard adapters. Detection results are reported in register 0x0B, and the INT pin asserts on plug-in events.

How is battery temperature monitoring implemented?

Temperature monitoring uses the NTC pin with VRNTC (3.5V reference) to bias an external NTC thermistor. The IC reads the resulting voltage divider ratio and compares it against four programmable thresholds (VCOLD, VCOOL, VWARM, VHOT) to enforce JEITA-compliant charge current/voltage derating - all configurable via I²C registers 0x0E–0x11.

Can MP2696AGQ-0000-Z operate without an I²C host controller?

Yes - MP2696AGQ-0000-Z supports autonomous charging with factory-default register settings (e.g., 1A charge current, 4.2V regulation). However, full functionality - including JEITA, input limit tuning, boost voltage selection, and fault diagnostics - requires I²C communication for register initialization and runtime updates.

What package thermal characteristics are specified for QFN-21?

The QFN-21 (3mm × 3mm) package has θJA = 50°C/W and θJC = 12°C/W when mounted on a 4-layer JEDEC-standard PCB (JESD51-7). The exposed thermal pad must be soldered to a solid PGND plane for optimal heat dissipation, especially during 3.6A boost operation.

Is there hardware-based protection against battery overvoltage?

Yes - MP2696AGQ-0000-Z includes dedicated hardware overvoltage protection that triggers at 102–106% of the programmed VBATT_REG value (e.g., 4.28–4.48V for 4.2V setting), independent of I²C or firmware. Upon activation, charging halts immediately and the CHG_FAULT register flags OV condition.

What is the function of the IB pin?

The IB pin provides an analog voltage proportional to battery current: 0.35V per 1A during charging, 0.16V per 1A during boost discharge. This enables precise, real-time current monitoring without external amplifiers - critical for fuel gauging and dynamic power budgeting in host systems.