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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Battery Chargers

Monolithic Power Systems Inc. MP26056DQ-LF-Z

Name: MP26056DQ-LF-Z
Brand: Monolithic Power Systems Inc.
SKU: MP26056DQ-LF-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP26056DQ-LF-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Battery Chargers

Package:: 10-VFDFN Exposed Pad

Datasheet:: MP26056DQ-LF-Z.pdf

Description:: IC BATT CHG LI-ION 1CELL 10QFN

Quantity:: RFQ Add To RFQ list

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Inventory:4,504

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Product details

Overview

MP26056DQ-LF-Z from Monolithic Power Systems is a linear single-cell Li-ion/Li-polymer battery charger IC with dual-input (USB/AC adapter) support, 28V input surge tolerance, programmable charge current (200mA–1A), 0.75% battery voltage regulation accuracy, and integrated thermal shutdown at 105–135°C. It operates in CC/CV mode and delivers charge status via open-drain CHG and ACOK pins for portable electronics requiring compact, safe, dual-source charging.

For engineers reviewing the MP26056DQ-LF-Z datasheet, MP26056DQ-LF-Z pinout, MP26056DQ-LF-Z application, or MP26056DQ-LF-Z equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative parts for USB/AC dual-mode Li-ion charging designs.

Technical Context

The MP26056 implements a linear charging architecture with automatic input source detection via MOD pin logic: MOD=HIGH selects USB mode (lower ICHG), MOD=LOW enables AC adapter mode (higher ICHG). Charge termination is determined by IBF-programmed current threshold (10–50% of ICHG), not voltage alone.

It integrates dual overvoltage protection: 7.0V ±0.2V input OVP with 400mV hysteresis and ACOK pin assertion between 3.5V–6.5V. Thermal regulation uses soft shutdown-reducing average charge current to a sawtooth waveform when die temperature exceeds 105–135°C-without halting operation.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.5V to 6.5V operating; withstands up to 28V transient surges without damage
Battery Regulation Accuracy	±0.75% over –5°C to +75°C ensures precise 4.20V CV termination
Charge Current Range	200mA to 1A, programmable separately for USB (MOD=HIGH) and AC (MOD=LOW) inputs
Idle Supply Current	80µA with USB input (MOD=HIGH), enabling ultra-low power standby in portable devices
Battery Reverse Leakage	<1µA when SHDN=Low and input floating-prevents battery drain during disconnection
Thermal Shutdown Threshold	105°C to 135°C with 10°C hysteresis-dynamically throttles charge current to sustain safe PCB operation
Recharge Threshold	3.9V to 4.1V-triggers automatic restart after battery self-discharge drops below full level

Pinout & Package

MP26056DQ-LF-Z is housed in a thermally enhanced 10-pin QFN package (3mm × 3mm, 0.5mm pitch) with exposed thermal pad requiring direct connection to PCB ground plane for optimal thermal performance.

Pin/Terminal	Circuit Role	Design Meaning
1 IN	Input supply rail	Accepts 3.5–6.5V DC from USB or AC adapter; tolerates 28V transients
2 ACOK	Open-drain input OK indicator	Pulled low when VIN is within 3.5–6.5V-signals valid input source to host system
3 CHG	Open-drain charge status output	Low during active charging; high-impedance at full charge or fault-drives LED or GPIO
4 MOD	USB/AC mode select input	High = USB mode (reduced ICHG); Low = AC mode (full ICHG)-enables auto-current scaling
5 GND	Ground reference & thermal pad	Primary return path; exposed pad must be soldered to solid GND plane for thermal dissipation
6 SHDN	Enable/disable control input	Logic low or floating = enabled; logic high = disabled-supports system-level power sequencing
7 IBF	Battery full current threshold program	Resistor-to-GND sets termination current (10–50% of ICHG) for CV-phase cutoff
8 ISET1	USB charge current program	Resistor-to-GND sets ICHG in USB mode: ICHG = 1.7V / R_SET1
9 ISET2	AC charge current program	Resistor-to-GND used with ISET1 (parallel) to set higher ICHG in AC mode
10 BATT	Charger output to battery	Delivers regulated CC/CV charge current directly to single-cell Li-ion anode

Key Features

Feature	Design Value
Dual-input auto-current selection	MOD pin toggles between USB-safe (≤297mA) and AC-optimized (≤585mA) charge profiles
Programmable battery full threshold	IBF pin allows 10–50% ICHG termination setting-enables precise end-of-charge detection
Integrated 7V input OVP with hysteresis	Shuts down before overvoltage damage; 400mV hysteresis prevents oscillation near trip point
Soft-start and reverse current blocking	10ms internal soft-start limits inrush; <1µA reverse leakage preserves battery during off-state
Die temperature limiting	Proprietary thermal foldback reduces average ICHG as junction rises-avoids hard shutdown

Applications

Smartphones

Digital Cameras

Use Scenario: Compact handheld device with dual-power capability (USB for desktop sync, AC for rapid top-up).

IC Role / Device Role / Timing Role: Primary linear battery charger managing CC/CV profile, input source arbitration, and thermal safety.

Use Value: Enables seamless transition between USB and AC inputs while maintaining <1µA battery leakage and ±0.75% voltage regulation.

Use Scenario: Portable imaging device requiring reliable charging under variable ambient temperatures and intermittent usage.

IC Role / Device Role / Timing Role: Single-cell Li-ion charger with automatic recharge at 4.0V and thermal foldback during extended capture sessions.

Use Value: Prevents overcharging and thermal runaway via 105–135°C soft shutdown and 3.9–4.1V reactivation window.

PDAs

MP3 Players

Use Scenario: Legacy mobile computing platform with limited PCB area and no external microcontroller for charge management.

IC Role / Device Role / Timing Role: Standalone charger providing CHG/ACOK status outputs and resistor-programmable current thresholds.

Use Value: Eliminates need for firmware-based charge control-reduces BOM count and design complexity.

Use Scenario: Battery-powered audio player with frequent partial charges and long idle periods.

IC Role / Device Role / Timing Role: Low-quiescent (80µA) charger supporting trickle charge, CV hold, and automatic restart on voltage sag.

Use Value: Extends shelf life with <1µA reverse leakage and maintains runtime consistency via 0.75% VBATT accuracy.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BQ24075RGTR	Fixed 4.2V regulation (no IBF programming); 1.5A max ICHG; no 28V surge tolerance	Lacks dual-input auto-scaling and thermal foldback-requires external OVP for >6.5V inputs	Choose for higher current needs where input surge risk is absent and fixed termination suffices
TP4056	No ACOK/CHG status pins; no MOD-controlled current scaling; 1A max ICHG; no input OVP	Requires external circuitry for USB/AC differentiation and lacks system-level status signaling	Choose for cost-sensitive, low-feature applications without dual-source or status feedback requirements

Compared with BQ24075RGTR and TP4056, MP26056DQ-LF-Z uniquely combines 28V surge resilience, resistor-programmable IBF termination, and MOD-driven USB/AC current switching-making it optimal for space-constrained, dual-input portable systems needing autonomous thermal and overvoltage protection.

Availability

MP26056DQ-LF-Z is available at Aetrix Electronics and suitable for smartphones, digital cameras, PDAs, and MP3 players requiring stable component supply, dual-input flexibility, and robust thermal management in compact QFN packages.

Supply support for MP26056DQ-LF-Z 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, motor drive, and automotive applications.

The MP26056 belongs to MPS's battery management product line, designed specifically for cost-effective, thermally robust linear charging in consumer portable electronics with dual-power input requirements.

FAQ

What is the maximum input voltage the MP26056DQ-LF-Z can safely withstand?

The MP26056DQ-LF-Z features integrated high-voltage input protection and can tolerate transient input surges up to +28V without damage. Its normal operating range is 3.5V to 6.5V, and it disables automatically if VIN exceeds 7.0V or falls below 3.0V per absolute maximum ratings.

How does the MOD pin affect charge current programming?

The MOD pin selects between two independent charge current configurations: MOD=HIGH configures ISET1 for USB mode (ICHG = 1.7V/R_SET1 ≤297mA), while MOD=LOW enables AC mode using parallel ISET1/ISET2 (ICHG = 1.7V/(R_SET1//R_SET2) ≤585mA), ensuring compliance with USB power limits.

What happens when the die temperature exceeds the thermal shutdown threshold?

When junction temperature reaches 105–135°C, the MP26056 enters soft thermal shutdown: charge current transitions from DC to a controlled sawtooth waveform, reducing average current to prevent overheating while maintaining partial charging-avoiding abrupt termination.

Can the MP26056DQ-LF-Z be used without external resistors?

No-external resistors are mandatory for core functionality: ISET1/ISET2 set charge current, IBF sets termination threshold, and R_BF must satisfy 0.1×ICHG < IBF < 0.6×ICHG. The device has no internal default values and will not regulate without these components.

Does the MP26056DQ-LF-Z support battery temperature monitoring?

Yes-the datasheet explicitly lists "battery temperature monitoring" as a safety feature. While no dedicated TS pin is present, the IC relies on system-level NTC circuitry interfaced externally; the charger halts charging if temperature faults are signaled via host control or predefined voltage thresholds on auxiliary inputs.

What is the purpose of the ACOK pin, and how is it used?

The ACOK pin is an open-drain output that pulls low only when VIN is within the valid 3.5V–6.5V window-indicating presence of a regulated input source. It enables host systems to distinguish between valid AC/USB power and invalid or missing input, supporting safe power-path arbitration and user interface feedback.

MP26056DQ-LF-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 10-VFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Battery Chemistry:: Lithium Ion/Polymer

Number of Cells:: 1

Current - Charging:: Constant - Programmable

Programmable Features:: Timer

Fault Protection:: Over Voltage

Charge Current - Max:: 1A

Battery Pack Voltage:: 4.2V

Voltage - Supply (Max):: 5.5V

Interface:: USB

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 10-QFN (3x3)

MP26056DQ-LF-Z FAQ

1.How can I place an order for MP26056DQ-LF-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MP26056DQ-LF-Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MP26056DQ-LF-Z reliable?

The price and inventory of MP26056DQ-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP26056DQ-LF-Z is usually 5 days.

3.What payment methods are accepted for MP26056DQ-LF-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP26056DQ-LF-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP26056DQ-LF-Z?

MP26056DQ-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP26056DQ-LF-Z order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MP26056DQ-LF-Z?

For technical support, including MP26056DQ-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP26056DQ-LF-Z requirements.

6.How does Aetrix verify that MP26056DQ-LF-Z is sourced from the original manufacturer or authorized distributors?

All MP26056DQ-LF-Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP26056DQ-LF-Z meets industry standards.

7.What is the process for return or replacement of MP26056DQ-LF-Z?

All MP26056DQ-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP26056DQ-LF-Z, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MP26056DQ-LF-Z part is unused and in its original packaging.

Return procedure for MP26056DQ-LF-Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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