ZSPM4551 High-Efficiency Charger for Li-Ion Batteries Brief Description Features The ZSPM4551 is a DC/DC synchronous switching lithium-ion (Li-Ion) battery charger with fully integrated power switches, internal compensation, and full fault protection. Its switching frequency of 1MHz enables the use of small filter components, resulting in smaller board space and reduced BOM costs. In Full-Charge Constant-Current Mode, the regulation is for constant current (CC). Once termination voltage is reached, the regulator operates in voltage mode. When the regulator is disabled (the EN pin is low), the device draws 10µA (typical) quiescent current. The ZSPM4551 includes supervisory reporting through the NFLT (inverted fault) open-drain output to interface other components in the system. Device programming is achieved by an I²C™* interface through the SCL and SDA pins. VBAT reverse-current blocking Programmable temperature-compensated termination voltage: 3.94V to 4.18V ± 1% User programmable maximum charge current: 50mA to 1500mA Current mode PWM control in constant voltage Supervisor for VBAT reported at the NFLT pin Input supply under-voltage lockout Full protection for over-current, over-temperature, VBAT over-voltage, and charging timeout Charge status indication 2 I C™ program interface with EEPROM registers Related ZMDI Smart Power Products ZSPM4121 Ultra-low Power Under-Voltage Switch ZSPM4141 Ultra-Low-Power Linear Regulator Benefits Physical Characteristics Up to 1.5A of continuous output current in FullCharge Constant-Current (CC) Mode High efficiency – up to 92% with typical loads Wide input voltage range: VBAT + 0.3V (3.5V min.) to 7.2V Junction operating temperature: -40°C to 125°C Package: 16-pin PQFN (4mm x 4mm) Available Support Evaluation Kit Support Documentation ZSPM4551 Application Circuit ZSPM4551 VIN VTH_REF CIN RREF GND VTHERM VDD SW CVDD RSENSE LOUT Battery COUT VDD RPULLUP (optional) SCL VSENSE SDA VBAT RTHM VDD EN NFLT RPULLUP (optional) PGND * I2C™ is a trademark of NXP. For more information, contact ZMDI via firstname.lastname@example.org. © 2014 Zentrum Mikroelektronik Dresden AG — Rev. 1.01— October 3, 2014. All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. ZSPM4551 High-Efficiency Charger for Li-Ion Batteries ZSPM4551 Block Diagram EN NFLT VIN VIN VIN ZSPM4551 SCL I²C™* Interface MONITOR & CONTROL Over-Voltage Protection Oscillator SDA VBAT VTH_REF BATT Thermal Control Ramp Generator BATT Current Control RREF VTHERM VBAT VIN Vref Gate Drive Backgate Blocking Gate Drive Control Typical Applications SW LOUT RSENSE BATTERY COUT Portable battery chargers Smart phones Laptops Tablets / e-readers Comparator Gate Drive Error Amp Compensation Network RTHM PGND VIN Current Control VDD Regulator VSENSE VBAT VDD GND CVDD I²C™*is a trademark of NXP. Ordering Information Ordering Code Description Package ZSPM4551AA1W ZSPM4551 High-Efficiency Li-Ion Battery Charger 16-pin PQFN / 7” Reel (1000 parts) ZSPM4551AA1R ZSPM4551 High-Efficiency Li-Ion Battery Charger 16-pin PQFN / 13” Reel (3300 parts) ZSPM4551KIT ZSPM4551 Evaluation Kit Sales and Further Information www.zmdi.com SPM@zmdi.com Zentrum Mikroelektronik Dresden AG Global Headquarters Grenzstrasse 28 01109 Dresden, Germany ZMD America, Inc. 1525 McCarthy Blvd., #212 Milpitas, CA 95035-7453 USA Central Office: Phone +49.351.8822.306 Fax +49.351.8822.337 USA Phone 1.855.275.9634 Phone +1.408.883.6310 Fax +1.408.883.6358 European Technical Support Phone +49.351.8822.7.772 Fax +49.351.8822.87.772 DISCLAIMER: This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Zentrum Mikroelektronik Dresden AG (ZMD AG) assumes no obligation regarding future manufacture unless otherwise agreed to in writing. The information furnished hereby is believed to be true and accurate. However, under no circumstances shall ZMD AG be liable to any customer, licensee, or any other third party for any special, indirect, incidental, or consequential damages of any kind or nature whatsoever arising out of or in any way related to the furnishing, performance, or use of this technical data. ZMD AG hereby expressly disclaims any liability of ZMD AG to any customer, licensee or any other third party, and any such customer, licensee and any other third party hereby waives any liability of ZMD AG for any damages in connection with or arising out of the furnishing, performance or use of this technical data, whether based on contract, warranty, tort (including negligence), strict liability, or otherwise. European Sales (Stuttgart) Phone +49.711.674517.55 Fax +49.711.674517.87955 Zentrum Mikroelektronik Dresden AG, Japan Office 2nd Floor, Shinbashi Tokyu Bldg. 4-21-3, Shinbashi, Minato-ku Tokyo, 105-0004 Japan ZMD FAR EAST, Ltd. 3F, No. 51, Sec. 2, Keelung Road 11052 Taipei Taiwan Phone +81.3.6895.7410 Fax +81.3.6895.7301 Phone +886.2.2377.8189 Fax +886.2.2377.8199 Zentrum Mikroelektronik Dresden AG, Korea Office U-space 1 Building 11th Floor, Unit JA-1102 670 Sampyeong-dong Bundang-gu, Seongnam-si Gyeonggi-do, 463-400 Korea Phone +82.31.950.7679 Fax +82.504.841.3026 © 2014 Zentrum Mikroelektronik Dresden AG — Rev. 1.01— October 3, 2014. All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.