Monolithic Power Systems Inc. MP2617AGL-P

Overview

MP2617AGL-P from Monolithic Power Systems is a monolithic 3A synchronous buck switching charger IC with integrated NVDC (Narrow Voltage DC) power path management for single-cell Li-ion batteries. It delivers regulated SYS output voltage (4.22–4.63V programmable), supports dual-input USB/DC adapter, implements five independent control loops (input current/voltage limit, CC/CV charge, thermal foldback), and enables immediate system operation even with deeply discharged or absent battery. It is used in tablet PCs and portable media players requiring simultaneous system power delivery and battery charging.

For engineers reviewing the MP2617AGL-P datasheet, MP2617AGL-P pinout, MP2617AGL-P application, or MP2617AGL-P equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, confirmed alternative parts with documented functional differences, and supply-chain-ready availability details - all derived from Monolithic Power Systems' official Rev. 1.24 datasheet and QFN-20 package documentation.

Technical Context

The MP2617AGL-P integrates a 1.6MHz fixed-frequency synchronous buck converter with internal high-side (130mΩ) and low-side (100mΩ) NMOS switches, enabling efficient 4V–10V input-to-SYS regulation while simultaneously managing battery charge current up to 3.025A (RISET = 760Ω). Its NVDC architecture decouples SYS rail and battery terminals via an internal 40mΩ ideal diode switch, allowing priority-based load powering and seamless battery supplementation during input power shortage or removal.

Five closed-loop controls operate concurrently: input current limit (programmable 450mA–3A), input voltage clamp (via VLIM pin), constant-current battery charge (ISET-programmed), terminal voltage regulation (4.35V ±12mV for MP2617A), and on-die thermal foldback (120°C activation, 150°C shutdown). All loops are implemented with analog comparators and error amplifiers - no microcontroller or firmware required.

Key Specifications

Pinout & Package

MP2617AGL-P is housed in a thermally enhanced QFN-20 package (3mm × 4mm, 0.5mm pitch) with exposed thermal pad (PGND-connected) for PCB-level heat dissipation. The 20-pin top-view layout supports standard reflow assembly and includes dedicated AGND/SYSFB/NTC pins for precision analog sensing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BQ25611DRTWR and IP2326, MP2617AGL-P delivers superior analog configurability (no MCU dependency), true hardware-enforced NVDC behavior, and tighter 4.35V battery voltage accuracy - making it optimal for cost-sensitive, firmware-light portable devices where reliability and ease of validation are prioritized.

Availability

MP2617AGL-P is available at Aetrix Electronics and suitable for tablet PC power management, portable media player charging, e-book reader system power, and GPS navigation device charging requiring stable component supply across high-volume consumer electronics production.

Supply support for MP2617AGL-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 ISO 9001-certified global manufacturing partners.

The MP2617A/B product line targets space-constrained portable electronics requiring integrated switching charge + NVDC power path in a single QFN package - solving the dual challenge of fast charging and uninterrupted system operation under variable input conditions.

FAQ

What is the exact battery full-charge voltage for MP2617AGL-P?

The MP2617AGL-P (MP2617A variant) regulates battery termination voltage at 4.35V ±12mV under typical conditions (VBATT > VRECH, ICHG ≤ IBF, SYSFB floating). This value is factory-trimmed and confirmed in the Electrical Characteristics table on page 7 of the Rev. 1.24 datasheet - not adjustable via external components.

Can MP2617AGL-P operate without an external NTC thermistor?

Yes - the NTC pin (Pin 16) is optional. If left unconnected, battery temperature monitoring is disabled and thermal safety relies solely on the on-die 120°C foldback. However, JEITA-compliant designs require NTC connection to suspend charging outside 0°C–45°C; the default NCP18XH103F thermistor is specified in the datasheet.

How does MP2617AGL-P prioritize system load versus battery charging when input current is limited?

When input current reaches the programmed limit, the IC satisfies the SYS load first using available input power; only residual current is allocated to battery charging. If SYS demand exceeds input capacity, the internal 40mΩ ideal diode connects BATT to SYS, drawing supplemental power from the battery - ensuring zero system interruption.

What is the minimum recommended inductor value for MP2617AGL-P?

The datasheet specifies a 1.2µH shielded power inductor (e.g., TDK SPM5030T-1R2M) as the reference design value. Lower inductance increases peak current stress and ripple; higher inductance degrades transient response. Inductor DCR must be ≤30mΩ to maintain accurate input current limiting per the ILIM feedback network.

Does MP2617AGL-P support USB PD input negotiation?

No - MP2617AGL-P accepts fixed 4–10V input and does not implement USB Power Delivery protocol stack or CC logic. It operates with standard USB-A/B ports (5V) or fixed-output DC adapters. For USB PD, an external PD controller (e.g., CYPD3177) must be added upstream to regulate input voltage before MP2617AGL-P.

What happens to SYS output when the battery is removed?

With battery disconnected and EN high, SYS remains regulated at the programmed voltage (e.g., 4.4V via SYSFB) as long as IN is present and within 4–10V. If IN is also removed, SYS collapses immediately - the IC has no backup capacitor hold-up or supercapacitor support; external circuitry is required for ride-through.

Is the MP2617AGL-P RoHS and REACH compliant?

Yes - per the datasheet footer on page 2, all MPS parts including MP2617AGL-P are lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Full compliance documentation is available on the MPS Quality Assurance webpage.