Monolithic Power Systems Inc. MP2632GR-P

Overview

MP2632GR-P from Monolithic Power Systems is a fully integrated, switch-mode single-cell Li-ion/Li-polymer battery charger and boost converter with power-path management, 3A programmable charge current, 3A programmable boost output current, 4.2V/4.35V/4.45V selectable charge voltage (±0.5%), and integrated 4-LED fuel gauge driver - designed for power bank and portable device applications requiring dual-direction power management.

For engineers reviewing the MP2632GR-P datasheet, MP2632GR-P pinout, MP2632GR-P application, or MP2632GR-P equivalent, key selection considerations include input over-voltage protection (6.0V), thermal regulation at 120°C, automatic transition between charge/boost/sleep modes, USB BC1.2 port detection (DP1/DM1), and output signaling (DP2/DM2) for DCP/SDP mode negotiation.

Technical Context

The MP2632GR-P implements dual-mode operation controlled by VIN presence and PB state: in charge mode, it regulates input current (up to 3A) and voltage (4.65–6V), manages three-phase charging (trickle → CC → CV), and prioritizes IN-to-SYS pass-through with OVP/OCP; in boost mode, it delivers regulated 5.1V SYS output with programmable 3A current limit, light-load auto-shutdown, and short-circuit protection that fully disconnects the battery.

Its architecture integrates analog sensing (VBATT, VNTC, ISET, ILIM, OLIM), digital logic for USB detection (DP1/DM1) and signaling (DP2/DM2), thermal shutdown (150°C), NTC-based battery temperature monitoring, and a 4-LED voltage-based fuel gauge with configurable thresholds per charge/discharge state - all coordinated via internal PWM control and mode-selection state machine without external MCU dependency.

Key Specifications

Pinout & Package

MP2632GR-P is housed in a thermally enhanced 26-pin QFN package (4mm × 4mm, 0.5mm pitch) with exposed thermal pad (PGND-connected) for efficient heat dissipation in high-current charge/boost operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar all-in-one battery charger/boost converter applications.

Compared with BQ25895RTWR and IP5306, MP2632GR-P uniquely integrates USB BC1.2 detection *and* signaling, torch control, NTC monitoring, and voltage-based fuel gauge in one QFN package - delivering complete power bank functionality without external controllers or protocol ICs.

Availability

MP2632GR-P is available at Aetrix Electronics and suitable for power bank manufacturing, portable medical device battery systems, and USB-powered industrial handhelds requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.

Supply support for MP2632GR-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 design centers in the US, China, and Taiwan, and global distribution through authorized partners.

The MP2632 belongs to MPS's Power Bank & Portable Power Management product line, engineered specifically to consolidate charging, boosting, USB protocol handling, and battery monitoring into single-chip solutions for consumer and industrial portable electronics.

FAQ

What is the maximum sustainable input voltage for MP2632GR-P?

The MP2632GR-P supports up to +14V absolute maximum input voltage (VIN to PGND), but its recommended operating range is 4.65V to 6.0V. Sustained operation above 6.0V triggers input over-voltage protection, disabling the IN-to-SYS path to protect downstream circuitry - making it compatible with 5V USB and 9V/12V adapters when used with appropriate front-end clamping.

How does the MP2632GR-P handle battery temperature monitoring?

The MP2632GR-P uses its NTC pin with an external thermistor divider to monitor battery temperature. It compares the sensed voltage against factory-trimmed thresholds corresponding to 0°C and 50°C (e.g., 66.2% and 35.7% of VNTC), enabling JEITA-compliant charge suspension outside safe ranges. VNTC provides a regulated pull-up voltage, and thermal hysteresis prevents oscillation during threshold crossings.

Can MP2632GR-P operate without an external microcontroller?

Yes - MP2632GR-P is designed as a standalone solution. All core functions - including USB BC1.2 detection (DP1/DM1), output signaling (DP2/DM2), 4-LED fuel gauge, torch control (TC), push-button logic (PB), and mode transitions - are implemented in hardware. No firmware, I²C, or external logic is required for full power bank operation.

What is the purpose of the VB pin, and how does it affect charging?

The VB pin selects the final charge voltage: grounded = 4.35V, floating = 4.2V, tied to VCC = 4.45V. This allows compatibility with different Li-ion chemistries (standard, high-capacity, or high-voltage) without changing external components. The selection is latched at power-on and maintained throughout charge cycles with ±0.5% accuracy.

How does the MP2632GR-P manage power-path priority between charging and system supply?

The MP2632GR-P gives strict priority to the IN-to-SYS pass-through path over battery charging. When VIN is present and valid (4.65–6.0V), power flows directly from VIN to SYS through internal MOSFETs, while excess current charges the battery. If SYS load exceeds input capability, the device reduces charge current rather than dropping SYS voltage - ensuring uninterrupted system operation.

Is the MP2632GR-P RoHS and lead-free compliant?

Yes - MP2632GR-P is fully RoHS-compliant, lead-free, and halogen-free per MPS corporate policy and EU Directive 2011/65/EU. The QFN-26 package uses matte tin (Sn) lead finish, and all materials meet IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements for standard surface-mount assembly.

What happens during a SYS short-circuit event in boost mode?

Upon detecting a SYS short, MP2632GR-P disables the boost converter within 150µs and fully disconnects the battery from the load using internal isolation switches. The device enters fault state with blinking LED indicators and remains latched until the short is removed; normal boost operation resumes automatically without reset or external intervention.