Datasheet > A9807VFG

A9807VFG

更新时间： 2024-09-25 01:01:23

品牌	Logo	应用领域
BCDSEMI		/
页数	文件大小	规格书
24页	1434K
描述
Single-cell Li-Ion Charger IC with System Power Management

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中文翻译

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A9807VFG 数据手册

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Data Sheet

Single-cell Li-Ion Charger IC with System Power Management AUR9807

General Description

Features

•

QFN Package

The AUR9807 is a single-cell Li-ion charger IC with

system power management feature. It charges the

battery and power the system simultaneously. The

maximum charging current (up to 1.5A) is set by

external resistor for fast charging. The output

voltage for the system is regulated to a nominal

value (three different versions available: 4.4V, 5V or

6V); the actual value of the output voltage depends

on the input voltage from the adapter, the charging

current and the system loading. With the decrease of

the input voltage or the increase of the system

loading current, the output voltage drops. When the

output voltage drops to a predetermined value

(V_APM-REG), the Active Power Management function

is activated and tries to maintain the output voltage

at V_APM-REG; the AUR9807 will suffice the system

loading with first priority and reduce the charging

current temporarily, i.e. under heavy load condition,

the AUR9807 charges the battery with the remaining

Active Power Management (APM) for

Simultaneously Powering the System and

Charging the Battery

Total Current Supported Up to 2 Amperes

(System Loading Having Higher Priority on the

Budget)

Automatic Power Source Selection (AC Adapter

or Battery)

40mΩ Power Path for the Battery to Supply the

System Power Efficiently

Junction Temperature Detection and Thermal

Regulation During Charging Process

External LED Indicating Charger and Power

Good Status as Well as Fault Condition

Thermal, Short-Circuit, and Reverse Current

Protection

Short-Circuit Protection in the Low Power

Consumption Sleep Mode

SYSOFF Function to Cut Off the Path Between

the System and the Battery

•

available current to keep the output voltage at V_APM

In this manner, the charge and discharge cycle of the

battery can be reduced.

Built-in Over Voltage Protection up to 18V

It is possible that the AUR9807 fails to maintain the

output voltage at V_APM-REG; for example, when the

system loading current exceeds the capability of the

current-limiting AC adapter. In this scenario, the

output voltage drops to the battery voltage, and the

system is allowed to draw current from the battery.

Applications

•

Battery-Powered Devices or Equipment

Mobile Phones, Digital Cameras and MP3

Players

•

Radios, Other Hand-Held Games and Instruments

Solar Power System

The AUR9807 is available in QFN-4.5×3.5-20

package.

QFN-4.5×3.5-20

Figure 1. Package Type of AUR9807

1 of 23

www.diodes.com

October 2014

AUR9807

Document number: DS37580 Rev. 1 - 3

12 3 4 5 6 7...24

中文翻译

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