PT6111中文资料Analog Front End for Multi-cell Battery Monitoring and Balancing数据手册CRMICRO规格书

描述 Description

The PT6lll is a highly integrated charging/discharging management analog front end for a microcontroller in a 3 to 8 serially connected Li-ion or LiFePO, battery pack. It is applicable in portable electrical tools or other multi-cell battery powered systems. The PT6lll contains a high precision amplifier buffering each battery cell voltage to an analog output pin. All output voltages are alternatively selected by MCU and digitized by the ADC within a MCU. The integrated battery balance circuitry in thePT611I provides a shunt current of 50mA without theneed of external transistors. The chip also includes important features such as an integrated LDO powering an external MCU and two gate drivers to two external MOSFETs used for charging and discharging.

The PT6lll works together with an MCU performs battery safety protections against battery over-voltage, and under-voltage, as well as cell charge balancing. The PT611I is available in a QFN-24 package.

特性 Features

Charger control
• 3-8 Li-ion or LifePO, battery voltages are sampled and buffered.
• Cell balancing with 50mA shunt current
• MCU control the protection cutoff voltage

Discharge control、
• MCU control the battery under-voltage protection
• 10-15V PWM or DC MOS gate driving voltage
• Max 200mA MOS gate driving voltage

LDO output
• Integrated LDO provides power supply to the external MCU

Other protection
• Protected from • Internal over temperature shutdown(TSD)

应用 Application

• Portable electrical tools
• Electrical bicycles
• Multi-cell battery pack in portable devices