Monolithic Power Systems Inc. MP26029GN-0000-P

Overview

MP26029GN-0000-P from Monolithic Power Systems is a standalone linear Li-ion/Li-polymer battery charger IC with integrated power MOSFET, thermal regulation (120°C junction limit), ±0.5% battery voltage accuracy (4.2V), and programmable 30mA–1A charge current via ISET resistor. It supports USB/AC input up to 13V, includes NTC-based battery temperature monitoring, input voltage limit regulation, and auto-recharge for portable smart handhelds.

For engineers reviewing the MP26029GN-0000-P datasheet, MP26029GN-0000-P pinout, MP26029GN-0000-P application, or MP26029GN-0000-P equivalent, key selection considerations include its SOIC8 EP package thermal performance (θJA = 48°C/W), OTP-programmable parameters (VBATT_REG, ITERM, TJ_REG), and integrated safety features including pre-charge, 7-hour safety timer, and NTC fault suspension.

Technical Context

The MP26029GN-0000-P implements a fully autonomous three-phase charging algorithm: pre-charge (10% ICC at VBATT < 3.0V), constant-current (programmable up to 1A), and constant-voltage (4.2V ±0.5%) with 10% ICC termination. Its internal linear pass transistor eliminates need for external blocking diode and enables direct IN-to-BATT regulation.

Thermal regulation operates via on-die temperature sensing - charge current reduces progressively above 120°C junction temperature, with hard shutdown at 150°C. Input voltage limit regulation dynamically scales charge current when VIN drops near 4.5V (OTP-configurable), preventing source collapse during high-current draw.

Key Specifications

Pinout & Package

MP26029GN-0000-P uses an 8-pin SOIC-EP (exposed pad) package with 4.9mm × 6.0mm footprint and thermal pad for enhanced heat dissipation. Pin 4 and Pin 5 are no-connect (NC); exposed pad must be soldered to PCB ground plane for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TP4056 and BQ24075, MP26029GN-0000-P delivers superior thermal safety through on-die regulation and NTC integration, while maintaining linear simplicity and SOIC8 EP manufacturability - ideal for cost-sensitive yet safety-compliant consumer devices where switcher EMI or external component count is prohibitive.

Availability

MP26029GN-0000-P is available at Aetrix Electronics and suitable for smart handheld devices, digital cameras, Bluetooth audio products, and consumer toys requiring stable component supply, consistent OTP configuration (0000), and SOIC8 EP thermal reliability.

Supply support for MP26029GN-0000-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 mixed-signal ICs for power management, motion control, and automotive applications.

The MP26029 belongs to MPS's battery management product line, designed specifically for compact, autonomous single-cell Li-ion charging in space- and safety-constrained portable electronics.

FAQ

What is the default OTP configuration for MP26029GN-0000-P?

The "0000" suffix indicates factory-default OTP settings: 4.2V battery regulation voltage, 10% ICC termination current, 120°C thermal regulation threshold, 4.5V input minimum voltage, 3.0V pre-charge threshold, 200mV auto-recharge delta, and 6.25V input OVP trigger. These values are permanently programmed and cannot be altered in-circuit.

Can MP26029GN-0000-P operate from a 9V wall adapter?

Yes - MP26029GN-0000-P supports input voltages up to 13V, but its internal linear regulator dissipates excess voltage as heat. At 9V input and 1A charge current, power dissipation exceeds 4.5W, exceeding the SOIC8 EP's 2.6W rating. Use only with derated current (e.g., ≤500mA) or active cooling for >6V inputs.

How does the NTC interface work without external biasing?

The MP26029GN-0000-P provides internal voltage references for the NTC divider. The NTC thermistor and two external resistors (RT1, RT2) form a voltage divider between IN and GND; the IC compares the NTC node voltage against internally generated VCOLD (61.5% VIN) and VHOT (28.5% VIN) thresholds to determine temperature compliance.

Is the STAT pin compatible with 3.3V microcontroller GPIO?

Yes - STAT is an open-drain output with 5.0V absolute maximum rating. A 10kΩ pull-up to 3.3V yields valid logic-high (≥2.4V) and logic-low (≤0.4V) levels. The pin sinks ~5mA when active low, well within standard GPIO sink capability.

Does MP26029GN-0000-P support battery removal detection?

Yes - when the battery is removed, BATT voltage drops below VBATT_REG – VRECH (4.2V – 0.2V = 4.0V). The IC detects this condition, stops charging, and drives STAT high (open-drain state with pull-up). Reinsertion of a battery below VRECH triggers immediate auto-recharge.

What is the minimum recommended input capacitance?

A minimum 4.7µF X5R/X7R ceramic capacitor must be placed between IN and GND, located as close as possible to pins 1 and 3. Larger capacitance (e.g., 10µF) improves transient response but does not replace the 4.7µF requirement for stability.

How is thermal regulation implemented without external sensors?

Thermal regulation uses an on-die temperature sensor that continuously monitors junction temperature. When TJ reaches 120°C (OTP-configurable), the charge current is reduced linearly to maintain TJ ≤ 120°C. At 150°C, the internal MOSFET shuts off completely - no external sensor or feedback loop is needed.