ZMDI, a Global Semiconductor Company, is Expanding its Family of Smart Charger ICs with Two New Chargers for Use with Photovoltaic Sources

DRESDEN, GERMANY -- (Marketwire) -- Feb 25, 2013 -- Editors' note: A photo is associated with this press release.

ZMD AG ( ZMDI), a Dresden-based semiconductor company that specializes in enabling energy efficient solutions, today announces the release of the ZSPM4521 high-efficiency lithium-ion (Li-ion) battery charger and the ZSPM4523 super capacitor charger for managing charging with photovoltaic sources. As a global supplier of analog and mixed signal solutions for automotive, industrial, medical, information technology and consumer applications, ZMDI enables best-in-class energy efficient solutions for mobile and battery-powered applications with its Smart Power Management technology.

Both the ZSPM4521 and ZSPM4523 are configurable for termination voltages and charge currents to allow optimum charging for a wide range of Li-ion batteries or super capacitors. They can regulate up to 1.5A continuous drive current and use a maximum power point tracking (MPPT) function to extract the maximum possible power from the photovoltaic charging source. Once the termination voltage is reached, the MPPT regulator operates in voltage mode to maintain optimal voltage. The switching frequency is 1MHz, which enables the use of small filter components, resulting in smaller board space and reduced system costs. An integrated I2C™ (trademark of NXP) interface enables the user to set application-specific termination voltages and control charging currents.

The ZSPM4521 has an additional charge timeout feature to protect the Li-ion battery from overcharge. It also offers separate settings for termination voltage and maximum charge current for different battery temperature ranges. It provides Li-ion-specific protection for over-current, over-temperature, over-voltage, under-voltage and charging timeout.

The ZSPM4523 is optimized for super capacitor charging. It provides protection for over-current, over-temperature, over-voltage and under-voltage.

The ZSPM45XX family is in a league of its own when it comes to its high level of integration, up to 92% efficiency and ultra-low power consumption. When the regulator is disabled, the device typically draws 10uA quiescent current.

"Building on the success of ZMDI's ZSPM4551 product, the ZSPM4521 and ZSPM4523 will provide our customers with a wider breadth of products to support Li-ion batteries, photovoltaic sources and super capacitor applications. ZMDI's continual commitment to developing advanced high-efficiency solutions will enable our customers to be leaders in energy efficiency," stated Edward Lam, Vice President of Marketing and Business Development at ZMDI.

Smart Charger Features:

--  Maximum power point tracking (MPPT) for optimized charging 
--  Ultra-low quiescent current, 10uA 
--  1.5A continuous output current 
--  Reverse-current blocking 
--  Programmable termination voltage and charging current 
--  Over-voltage and charging-timeout supervisor 
--  Input supply under-voltage lockout 
--  Full protection for over-current and over-temperature 
--  Charge status indication 
--  I2C™ program interface with EEPROM registers 
--  Temperature (junction) range -40 degrees C to 125 degrees C 
--  Package: 16-L PQFN (4mm x 4mm) 

Availability & Pricing

ZSPM4521 USD1.85/Euro 1.37 @ 1Ku, ZSPM4523 USD1.58/Euro 1.17 @ 1Ku

About ZMDI

Zentrum Mikroelektronik Dresden AG ( ZMDI) is a global supplier of analog and mixed signal semiconductors solutions for automotive, industrial, medical, mobile sensing, information technology and consumer applications. These solutions enable our customers to create the most energy-efficient products in power management, lighting and sensors.

For over 50 years, ZMDI has been globally headquartered in Dresden, Germany. With over 320 employees worldwide, ZMDI serves its customers with sales offices and design centers throughout Germany, Italy, Bulgaria, France, United Kingdom, Ireland, Japan, Korea, Taiwan and the United States.

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The URL for this news release is

To view the photo associated with this press release, please visit the following link:

Daniel Aitken
ZMDI Global Director of Corporate Marketing
and Communications
T +001 438 288 3668

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