ZMDI, a Global Semiconductor Company, Announces the Release of the ZSPM4521, ZSPM4522, ZSPM4523 and

A Family of Smart Chargers for Li-ion or NiMH Batteries or Super Caps, Utilizing Photovoltaic or Conventional Sources

     DRESDEN, Germany, Aug. 20, 2012 (ANTARA/PRNewswire) - ZMD AG (ZMDI), a Dresden-based semiconductor company that specializes in enabling energy-efficient solutions, today announces the release of the ZSPM4521, ZSPM4522, ZSPM4523 and ZSPM4551. The ZSPM4521, ZSPM4522 and ZSPM4523 provide a temperature-independent photovoltaic maximum power point tracking (MPPT) regulator to optimize power output from solar sources while the ZSPM4551 is optimized for conventional power sources. Its switching frequency of 1MHz enables the use of small filter components, resulting in smaller board space and reduced system costs.

     The integrated I(2)C(TM) (trademark of NXP) interface enables the user to set application-specific temperature-compensated termination voltages with a + or - 1% tolerance and control charging currents.

     All four ICs can regulate up to 1.5A continuous drive current.

     The ZSPM4521 and ZSPM4551 are DC/DC synchronous switching lithium-ion (Li-ion) battery chargers with integrated power switches, internal compensation and fault protection. Both devices contain Li-ion-specific protection for over-current, over-temperature, battery (VBAT) over-voltage and charging timeout. In addition, they include supervisory reporting through the NFLT (inverted fault) open-drain output to interface with other components in the system.

     The ZSPM4522 is a DC/DC synchronous switching nickel-metal hydride (NiMH) battery charger with integrated power switches, internal compensation and fault protection specific to NiMH batteries. It features input supply under-voltage lockout and full protection for VBAT over-voltage.

     The ZSPM4523 is a DC/DC synchronous switching super capacitor charger with integrated power switches, internal compensation and full fault protection. It integrates a wide range of protection circuitry, including input supply under-voltage lockout, output over-voltage protection, current limiting and thermal shutdown.

     The ZSPM452x and ZSPM4551 are in a league of their own when it comes to their high level of integration, up to 92% efficiency with typical loads and ultra-low power consumption. When the regulator is disabled, the devices draw less than 10µA quiescent current.

     "ZMDI is committed to developing advanced solutions to meet our customers' variety of needs. The ZSPM4521, ZSPM4522, ZSPM4523 and the ZSPM4551, a family of smart chargers, support our customers' direction into portable applications, and these products are another example of ZMDI's commitment to providing the very best solutions for our energy-conscious customers," stated Edward Lam, Vice President of Product Marketing and Business Development at ZMDI.

     Smart Charger Family Features:

     1.5A continuous output current
     VBAT reverse-current blocking (VCAP for the ZSPM4523)
     Programmable temperature-compensated termination voltage
     User-programmable charging current
     VBAT over-voltage and charging-timeout supervisor for VBAT reported at the NFLT pin for Li-ion battery chargers
     Input supply under-voltage lockout
     Full protection for over-current and over-temperature
     Charge status indication
     I(2)C(TM) program interface with EEPROM registers
     Temperature (junction) range -40C to 125C
     Package: 16-L PQFN

     Availability & Pricing

     ZSPM4521 USD1.85/Euro 1.37 @ 1Ku, ZSPM4522 USD1.60/Euro 1.18 @ 1Ku,
     ZSPM4523 USD1.58/Euro 1.17 @ 1Ku, ZSPM4551 USD1.65/Euro 1.22 @ 1Ku.

     About ZMDI
     Zentrum Mikroelektronik Dresden AG (ZMDI) is a global supplier of analog and mixed-signal semiconductors solutions for automotive, industrial, medical, 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.

     The URL for this news release is

     For further information:
     Daniel Aitken, ZMDI Global Director of Corporate Marketing and Communications, T +1 514 831 6722