Monolithic Power Systems Inc. MP2632BGR-P

Overview

MP2632BGR-P from Monolithic Power Systems is a highly integrated, switch-mode battery charger and boost converter IC for single-cell Li-ion/Li-polymer batteries. It delivers up to 3A charge current and 3A boost output current, integrates VIN-to-SYS pass-through with OVP/OCP, supports programmable 4.2V/4.35V/4.45V charge voltage (±0.5%), and enables independent torch-on control and BATT_UVLO latch-off - all in a QFN-26 (4mm×4mm) package for power bank applications.

For engineers reviewing the MP2632BGR-P datasheet, MP2632BGR-P pinout, MP2632BGR-P application, or MP2632BGR-P equivalent, this device serves as an all-in-one power management solution requiring no external microcontroller - with verified USB BC1.2 detection, 4-LED fuel gauge, NTC temperature monitoring, and dual-mode operation (charge/boost) controlled via PB, ILIM, ISET, and OLIM pins.

Technical Context

The MP2632BGR-P implements a synchronous buck topology for charging and a synchronous boost topology for system power delivery, sharing a common SW node and internal power FETs. Its power-path architecture prioritizes SYS load over battery charging when input is present, with automatic transition to boost mode upon VIN removal.

It embeds dual USB data-line interfaces: DP1/DM1 for input source detection (SDP/DCP), and DP2/DM2 for output signaling (BC1.2 DCP/SDP/divider/1.2V modes), plus hardware-based torch control (TC open-drain) and latched BATT_UVLO shutdown triggered independently of charge state.

Key Specifications

Pinout & Package

MP2632BGR-P is housed in a thermally enhanced QFN-26 package (4mm × 4mm, 0.5mm pitch) with exposed thermal pad. Pin 1 is located at top-left per top-marking orientation; PGND (pins 1, 3, 4, 21) and AGND (pin 17) are separate ground domains requiring careful PCB partitioning.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar battery charger + boost converter applications.

Compared with BQ25895RTWR and IP5306, MP2632BGR-P uniquely integrates pass-through power routing, hardware torch control, latched BATT_UVLO, and full BC1.2 detection - enabling certified, microcontroller-free designs with higher reliability and faster time-to-market.

Availability

MP2632BGR-P is available at Aetrix Electronics and suitable for portable power banks, smartphone charging accessories, tablet external battery packs, and wearable emergency power modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2632BGR-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 MP2632B product line targets highly integrated power management for portable energy storage systems - designed to replace multi-chip solutions with single-package functionality including charging, boosting, USB detection, and fuel gauging.

FAQ

What is the maximum sustainable input voltage for MP2632BGR-P?

The MP2632BGR-P withstands up to +20V at VIN relative to PGND per absolute maximum ratings, though its functional operating range is 4.65V to 6.0V. This 20V rating protects against transient surges from unregulated adapters or automotive environments, but continuous operation above 6V triggers OVP shutdown at 6.0V (typical) with 250mV hysteresis.

How does the BATT_UVLO latch-off function operate?

BATT_UVLO latch-off activates when battery voltage falls below 2.76V during boost mode or 3.295V before boost initiation. Once triggered, the boost converter remains disabled until VIN is reapplied or the device undergoes a full power cycle - preventing repeated cycling at critically low battery states that could damage the cell.

Can MP2632BGR-P support 4.35V and 4.45V lithium batteries?

Yes - VB pin configuration selects charge voltage: floating = 4.200V, grounded = 4.350V, tied to VCC = 4.450V, all with ±0.5% accuracy over temperature. This enables compatibility with high-voltage Li-ion variants used in premium power banks and tablets, while maintaining tight regulation for cell safety and cycle life.

What USB BC1.2 modes does MP2632BGR-P support on DP2/DM2?

MP2632BGR-P supports four BC1.2 output signaling modes via DP2/DM2: DCP (shorted pair, 200Ω typ), SDP (15kΩ pull-down on both lines), Divider Mode (2.7V output on both), and 1.2V/1.2V Mode (1.26V output). These allow attached smartphones to auto-detect port type and draw appropriate current without host negotiation.

Is thermal regulation active during both charge and boost modes?

Yes - thermal regulation dynamically reduces charge or boost current when junction temperature approaches 125°C, preventing thermal shutdown. Full thermal shutdown engages at 150°C with hysteresis. Regulation operates continuously in both modes using the same internal sensor and feedback loop, ensuring safe operation under sustained 3A loads.

How is the 4-LED fuel gauge calibrated?

The 4-LED fuel gauge uses fixed voltage thresholds with 500mV hysteresis per level - e.g., in charge mode with 4.2V regulation: LED1 illuminates at ≥3.60V, LED2 at ≥3.80V, LED3 at ≥4.00V, and LED4 at ≥4.20V. Thresholds shift slightly in discharge mode (e.g., first level at 3.47V) to reflect actual usable capacity under load.

Does MP2632BGR-P require external MOSFETs for torch control?

No - the TC pin is an open-drain output rated for 100mA sink current at ≤550mV drop, directly driving typical white LED torch circuits. For higher-power torches, an external N-MOSFET can be added with TC controlling its gate; the IC handles timing, latching, and double-press detection entirely in hardware.