RT9501A/RT9501B 先进的锂离子线性电池充电器(

RT9501A/RT9501B 先进的锂离子线性电池充电器(应用电路)

The RT9501 is a single Lithium-Ion or Lithium-Polymer cell linear battery charger which is designed for compact and cost-sensitive handheld devices. It combines charge status indication, charge termination, battery temperature monitoring, and high accuracy current and voltage regulation in a MSOP-8 package.
The RT9501 charges the battery in three modes, precharge, constant current, constant voltage. If the battery voltage is below the precharge threshold VO(MIN), the RT9501 precharges the battery with a lower conditioning current. After precharge, the RT9501 applies a constant current to the battery. An external sense-resister sets the charge current. The constant voltage mode continues until the battery reaches the regulation voltage.
The battery temperature is continuously measured by an external thermistor through the TS pin. The RT9501 inhibits charge until the temperature is within the range defined by users.

Ordering Info

Note :
RichTek Pb-free and Green products are :
► RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-
   020.
► Suitable for use in SnPb or Pb-free soldering processes.
► 100%matte tin (Sn) plating.

Features

• For Single Lithium-Ion or Lithium-Polymer Cell Battery Pack (4.1V or 4.2V)
• A Few External Components are Required
• Precharge, Constant Current, Constant Voltage Modes
• Battery Temperature Monitor
• Charge Status Indication
• Automatic Battery Recharge
• Charge Termination Detect
• Auto Low Power Sleep Mode when VDD Power is Removed
• MSOP-8 Package
• RoHS Compliant and 100% Lead (Pb)-Free

Application

• Digital Cameras
• PDAs
• Cellular Phones
• Information Appliance

Pin Configurations

(TOP VIEW)


MSOP-8

Typical Applications Circuit

 

Figure 1. Application circuit using P-Channel MOSFET

 

Figure 2. Application circuit using PNP transistor

RT9501A/RT9501B PDF datesheet

线性锂离子先进电池充电器电路

免责声明：本网信息来自于互联网，目的在于传递更多信息，并不代表本网赞同其观点。其原创性以及文中陈述文字和内容未经本站证实，对本文以及其中全部或者部分内容、文字的真实性、完整性、及时性本站不作任何保证或承诺，并请自行核实相关内容。本站不承担此类作品侵权行为的直接责任及连带责任。如若本网有任何内容侵犯您的权益，请及时联系我们，本站将会在24小时内处理完毕。