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HomeProductsIntegrated Circuits (ICs)PMIC - Battery ChargersMAX14578EEWC+T
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MAX14578EEWC+T - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number
MAX14578EEWC+T
Manufacturer
Maxim Integrated
Allelco Part Number
32D-MAX14578EEWC+T
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
21,229 pcs available, New & Original
Parts Description
IC CHARGER DETECT USB LI+ 12WLP
Package
12-WLP
Data sheet
MAX14578EEWC+T.pdf

Datasheets

MAX14578(A)E.pdf

Part Numbering Guide

Part Numbering System.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 21229
  • Unit Price: $0.94
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $0.94 $0.94
200+ $0.364 $72.80
500+ $0.351 $175.50
1000+ $0.345 $345.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

MAX14578EEWC+T Tech Specifications
Analog Devices Inc./Maxim Integrated - MAX14578EEWC+T technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc./Maxim Integrated - MAX14578EEWC+T

Product Attribute Attribute Value
Manufacturer Maxim Integrated
Voltage - Supply (Max) 5.5V
Supplier Device Package 12-WLP
Series -
Programmable Features -
Package / Case 12-WFBGA, WLBGA
Package Tape & Reel (TR)
Operating Temperature -40°C ~ 85°C (TA)
Number of Cells -
Product Attribute Attribute Value
Mounting Type Surface Mount
Interface I²C, USB
Fault Protection -
Current - Charging -
Charge Current - Max -
Battery Pack Voltage 4.2V
Battery Chemistry Lithium Ion
Base Product Number MAX14578

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

MAX14578EEWC+T Image
MAX14578EEWC+T (1)

Manufacturer Part Number

MAX14578EEWC+T

Manufacturer

analog-devices

Introduction

The MAX14578EEWC+T is a highly integrated, high-efficiency linear Li-ion battery charger IC designed for space-constrained portable applications. It provides a complete charging solution with integrated MOSFET, current monitoring, and charge termination detection. The device supports a wide input voltage range and automatic power-path management to charge the battery while simultaneously powering the system load.

Product Features and Performance

Integrated MOSFET for small solution size

Programmable charge current up to 1.5A

Automatic power-path management to charge battery and power system load

Charge termination detection and battery overcharge protection

Input overvoltage and reverse polarity protection

Thermal regulation and thermal shutdown protection

I2C and USB interfaces for configuration and monitoring

Product Advantages

Highly integrated design for compact solution size

Efficient charging with automatic power-path management

Comprehensive protection features for safe and reliable operation

Flexible configuration and monitoring via I2C and USB interfaces

Key Reasons to Choose This Product

Optimal performance and efficiency for space-constrained portable applications

Reliable and safe charging with extensive protection features

Easy integration and configuration via I2C and USB interfaces

Proven reliability and quality from a trusted semiconductor manufacturer

Quality and Safety Features

Thermal regulation and thermal shutdown protection

Input overvoltage and reverse polarity protection

Battery overcharge protection

Compatibility

Supports Li-ion battery chemistry

Wide operating voltage range up to 5.5V

Application Areas

Portable electronics

Wearable devices

IoT and smart home applications

Power banks and battery packs

Product Lifecycle

The MAX14578EEWC+T is an active product. There are no direct equivalents or alternative models available at this time. For more information or any updates on the product lifecycle, please contact our sales team via our website.

Frequently Asked Questions(FAQ)

What is the MAX14578EEWC+T and how does it function in a lithium-ion battery charging system?
The MAX14578EEWC+T is a charger detection IC designed specifically for USB-powered lithium-ion battery systems. It integrates circuitry to detect the presence of a USB host or dedicated charger by monitoring voltage levels on the USB data lines, distinguishing between standard 500mA hosts and high-current chargers capable of up to 12W output. This allows the system to adjust charging current accordingly, ensuring safe and efficient energy transfer while preventing overcurrent conditions.
How does the MAX14578EEWC+T differentiate between standard USB ports and high-power chargers during battery charging?
The device employs a precise analog front end that senses differential voltages on the D+ and D− lines of the USB interface. When connected to a dedicated charger, these lines exhibit specific pull-up or pull-down configurations that the MAX14578EEWC+T recognizes as indicating higher available current (e.g., 1.5A or more). In contrast, standard USB 2.0 hosts typically do not drive these lines, allowing the IC to default to a lower, safe charging profile—typically around 500mA.
What are the key electrical constraints when using the MAX14578EEWC+T in a portable power application?
The MAX14578EEWC+T operates with a supply voltage ranging from 2.9V to 5.5V, making it compatible with both Li-Ion cell voltages (up to 4.2V) and typical USB input rails. Its maximum operating temperature is 85°C, so thermal management must be considered in compact designs. Additionally, since it lacks integrated pass elements, external MOSFETs or transistors are required to handle actual charge current delivery, which introduces layout sensitivity due to parasitic inductance and resistance.
Can the MAX14578EEWC+T be used with non-USB power sources like wall adapters without modification?
Yes, but only if the adapter presents itself as a compliant USB charger via its D+/D− signaling. Many non-standard AC adapters omit proper USB ID line configuration and may appear as unrecognized hosts. In such cases, the MAX14578EEWC+T will not detect them as high-current sources and will limit charging to basic USB mode unless alternative detection methods (such as voltage threshold sensing at the VBUS pin) are implemented externally.
How does the I²C interface on the MAX14578EEWC+T enhance system diagnostics compared to a standalone charger detector?
Unlike simpler detectors that only assert a single logic signal, the MAX14578EEWC+T provides real-time status information through its I²C interface. Engineers can read register contents to determine the detected charger type, fault conditions (if any), and even monitor VBUS voltage thresholds. This enables software-based logging, adaptive charging algorithms, and integration with microcontrollers for dynamic load balancing or safety interlocks in multi-battery systems.
What design considerations are critical when integrating the MAX14578EEWC+T into a space-constrained wearable device?
The 12-WLP package measures just 2.0mm × 2.0mm, ideal for miniaturization, but demands careful attention to soldering yield and rework due to small pad sizes. PCB trace impedance matching near the D+/D− inputs is essential to avoid false detection caused by crosstalk or noise coupling. Also, decoupling capacitors must be placed within 1mm of the VDD pin to maintain stability under transient USB events such as hot-plug surges.
Does the MAX14578EEWC+T support reverse polarity protection or ESD robustness out of the box?
No built-in reverse polarity protection is provided; external diodes or ideal diodes are recommended if the VBUS rail could experience accidental inversion. However, the device includes robust ESD protection on all pins, meeting HBM Class 2 (>2kV) standards, which helps survive common handling stresses during assembly. Still, proper layout practices—like adding series resistors on data lines and TVS diodes on VBUS—are advised for automotive or industrial environments.
How does the MAX14578EEWC+T compare to the MAX14576 in terms of detection granularity and application flexibility?
While both devices serve similar charger detection roles, the MAX14578EEWC+T offers finer detection resolution and supports I²C communication, whereas the MAX14576 typically uses open-drain outputs and fixed thresholds. For applications requiring programmable charging policies or integration with host processors, the MAX14578EEWC+T provides superior visibility into the power source characteristics, enabling smarter battery management strategies beyond basic current limiting.
Is the MAX14578EEWC+T suitable for use in battery packs with multiple cells in series or parallel configurations?
The MAX14578EEWC+T is designed solely for charger detection and does not regulate individual cell voltages. It assumes a regulated 4.2V nominal battery pack output (or higher with buck converters). Therefore, it can be used in multi-cell systems as long as the downstream charging circuitry handles per-cell balancing and overvoltage protection. Its role remains confined to identifying the available input power quality before handing off control to a separate fuel gauge or charge controller.
What impact does moisture sensitivity have on manufacturing reliability when handling the MAX14578EEWC+T?
Rated MSL 1 means the MAX14578EEWC+T can withstand unlimited floor life under dry storage conditions (≤30°C/60% RH), significantly simplifying production scheduling. This level of robustness reduces the need for baking prior to reflow, minimizing process complexity and cost in high-volume assembly operations, especially beneficial for contract manufacturers serving consumer electronics markets.
Can the MAX14578EEWC+T coexist with other power management ICs in a single-system PMIC stack without interference?
Yes, provided proper isolation is maintained on shared buses like I²C. Since the device only pulls SDA low when communicating and respects clock stretching, it integrates cleanly with master controllers. Layout segregation between high-speed digital traces and sensitive analog sense paths minimizes cross-talk, particularly important when adjacent to RF modules or switching regulators that might induce noise on the D+/D− lines.
How does the operating temperature range (-40°C to +85°C) influence deployment in harsh environments?
The extended temperature range ensures reliable operation across automotive, outdoor IoT, and industrial applications where ambient temperatures fluctuate widely. At -40°C, internal comparator thresholds remain stable despite semiconductor parameter drift, preserving accurate charger detection even in cold-start scenarios. Similarly, at +85°C, no performance degradation occurs, eliminating derating concerns in thermally challenging enclosures.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc./Maxim Integrated MAX14578EEWC+T

Product Attribute MAX14578AEEWC+T MAX14578EWC+T MAX14578EETE+T MAX14578EWC+
Part Number MAX14578AEEWC+T MAX14578EWC+T MAX14578EETE+T MAX14578EWC+
Manufacturer Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Number of Cells - - - -
Fault Protection - - - -
Battery Pack Voltage - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Current - Charging - - - -
Series - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Charge Current - Max - - - -
Voltage - Supply (Max) - - - -
Programmable Features - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Mounting Type - Surface Mount Through Hole Surface Mount
Battery Chemistry - - - -
Interface - - - -

MAX14578EEWC+T Datasheet PDF

Download MAX14578EEWC+T pdf datasheets and Analog Devices Inc./Maxim Integrated documentation for MAX14578EEWC+T - Analog Devices Inc./Maxim Integrated.

Datasheets
MAX14578(A)E.pdf
Environmental Information
Material Declaration MAX14578EEWC+T.pdf Maxim Integrated RoHS Cert.pdf
Part Numbering Guide
Part Numbering System.pdf
Application Notes
Selecting the Right CMOS Analog Switch.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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MAX14578EEWC+T Image

MAX14578EEWC+T

Analog Devices Inc./Maxim Integrated
32D-MAX14578EEWC+T

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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