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 cost. 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
  • I2C program interface with EEPROM registers


器件号 Part Status Pkg. Type Lead Count (#) Temp. Range Carrier Type Buy Sample
Not Recommended for New Designs VFQFPN 16 -40 to 125°C Reel
Not Recommended for New Designs VFQFPN 16 -40 to 125°C Reel


文档标题 其他语言 类型 文档格式 文件大小 日期
ZSPM4551 Short-form Datasheet 简易格式数据手册 PDF 153 KB
ZSPM4551 Datasheet 数据手册 PDF 526 KB
IDT CAD Altium Libraries for AID Products Rev 20160819 指南 ZIP 1.20 MB
ZSPM4551 Evaluation Kit Description 手册 PDF 963 KB
应用指南 &白皮书
ZSPM4551 Application Note – Li-Ion Battery Charging Applications 应用文档 PDF 197 KB
ZSPM45XX Evaluation Kit Software Setup V1.020 (zip) 软件 ZIP 935 KB

Boards & Kits

器件号 文档标题 类型 公司
ZSPM4551KIT Evaluation Kit for ZSPM4551 评估 Renesas