Monolithic Power Systems Inc. MP26060EQ-LF-P

Overview

MP26060EQ-LF-P from Monolithic Power Systems is a linear single-cell Li-ion battery charger IC with integrated 24V input surge protection, programmable 85mA–1A constant-current charging, 4.15V ±0.75% constant-voltage regulation, and trickle charge for deeply discharged batteries. It operates from 3.5V–6.5V input and delivers charge status (CHG) and AC adapter power-good (ACOK) signals to host systems in portable electronics.

For engineers reviewing the MP26060EQ-LF-P datasheet, MP26060EQ-LF-P pinout, MP26060EQ-LF-P application, or MP26060EQ-LF-P equivalent, key selection criteria include its 10-pin QFN package, thermal shutdown threshold (105–135°C), reverse current blocking (<1µA), soft-start programmability via external capacitor, and battery temperature monitoring capability.

Technical Context

The MP26060EQ-LF-P implements a three-stage linear charging algorithm-trickle preconditioning (at ≤2.6V), constant-current (CC) mode up to 1A, then constant-voltage (CV) regulation at 4.15V-with automatic recharge when battery voltage drops below 4.10V. Its proprietary over-voltage protection clamps charge current to zero if VBATT exceeds 4.20V by 50mV.

Input surge tolerance to 24V is achieved via internal high-voltage protection circuitry, while EN pin logic (active-low enable) and open-drain CHG/ACOK outputs support direct LED or microcontroller interfacing. Thermal regulation uses a saw-tooth current waveform during overheating, modulated by SS pin capacitance.

Key Specifications

Pinout & Package

MP26060EQ-LF-P is housed in a thermally enhanced 10-pin QFN package (3mm × 3mm, 0.5mm pitch) with exposed thermal pad connected to GND. The package supports high-power dissipation (θ_JA = 50°C/W) and meets JEDEC MO-229 VEED-5 standards.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar linear Li-ion battery charger applications.

Compared with BQ24075RGTR and TP4056, MP26060EQ-LF-P uniquely combines 24V surge resilience, programmable 4.15V regulation, dual open-drain status outputs, and thermal foldback-making it optimal for portable devices exposed to variable or unregulated input sources.

Availability

MP26060EQ-LF-P is available at Aetrix Electronics and suitable for cell phones, smart phones, and digital cameras requiring stable component supply, RoHS-compliant packaging, and long-term lifecycle support.

Supply support for MP26060EQ-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, with expertise in DC/DC converters, LED drivers, motor drivers, and battery management solutions.

The MP26060 belongs to MPS's linear battery charger product line, designed specifically for space-constrained portable electronics needing robust input protection, precision voltage regulation, and intelligent charge state signaling.

FAQ

What is the maximum input voltage the MP26060EQ-LF-P can withstand without damage?

The MP26060EQ-LF-P integrates internal high-voltage protection that allows it to survive input transients up to +24V. However, normal operation is limited to 3.5V–6.5V DC. Above 6.5V or below 2.5V, the IC disables charging and asserts ACOK high-impedance; sustained 24V exposure is not recommended for continuous operation.

How is the charge termination current (IBF) programmed on the MP26060EQ-LF-P?

IBF is set by connecting a resistor (R_BF) from the IBF pin (Pin 8) to GND. The relationship is I_BF = 1.7 kΩ / R_BF, with R_BF constrained to 2×R_CHG < R_BF < 10×R_CHG. Typical values yield 10–50% of the programmed I_CHG, enabling precise full-charge detection before CV mode completion.

Does the MP26060EQ-LF-P support battery temperature monitoring?

Yes-the MP26060EQ-LF-P includes dedicated circuitry for battery temperature monitoring. While it does not integrate a thermistor interface, its thermal protection and charge algorithm respond to die temperature (shutdown at 105–135°C), and the datasheet confirms compatibility with external NTC circuits via system-level implementation per application note AN-101.

Can the MP26060EQ-LF-P be used with a 12V wall adapter?

No-it is not designed for direct 12V operation. Although it tolerates 24V transients, its functional input range is strictly 3.5V–6.5V. Using a 12V adapter would require an external buck converter or LDO to step down to ≤6.5V; otherwise, the IC disables charging and ACOK remains inactive.

What is the purpose of the SS (soft-start) pin, and how is it configured?

The SS pin (Pin 7) controls the soft-start ramp time from trickle to 90% of full charge current. A 0.1µF capacitor between SS and GND yields 10–35ms startup, reducing inrush current and stabilizing input supply. Larger capacitors extend ramp time linearly; the formula is T_SS ≈ 0.2 × C_SS (in µF) seconds.

Is the exposed thermal pad on the QFN package required to be connected to ground?

Yes-the exposed pad (Pin 6) must be soldered to a PCB ground plane. It serves as both the primary thermal path (θ_JC = 12°C/W) and electrical ground reference. Leaving it unconnected degrades thermal performance, risks exceeding junction temperature limits, and may cause premature thermal shutdown or reliability failure.