Datasheet > A4004J6VR

A4004J6VR

更新时间： 2022-02-26 12:34:46

品牌	Logo	应用领域
创瑞 - AITSEMI		/
页数	文件大小	规格书
11页	424K
描述
BATTERY MANAGEMENT

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A4004J6VR 数据手册

A4004

AiT Semiconductor Inc.

www.ait-ic.com

BATTERY MANAGEMENT

ONE CELL LITHIUM-ION/POLYMER BATTERY PROTECTION IC

DETAILED INFORMATION

Functional Description

The A4004 the voltage and current of a battery and protects it from being damaged due to overcharge voltage,

overdischarge voltage, overdischarge current, and short circuit conditions by disconnecting the battery from

the load or charger. These functions are required in order to operate the battery cell within specified limits.

The device requires only one external capacitor. The MOSFET is integrated and its R_SS(ON)is as low as 18mΩ

typical

Normal operating mode

If no exception condition is detected, charging and discharging can be carried out freely. This condition is

called the normal operating mode.

Overcharge Condition

When the battery voltage becomes higher than the overcharge detection voltage (V_CU) during charging under

normal condition and the state continues for the overcharge detection delay time (t_CU) or longer, the A4004

turns the charging control FET off to stop charging. This condition is called the overcharge condition. The

overcharge condition is released in the following two cases:

When the battery voltage drops below the overcharge release voltage (V_CL), the A4004 turns the

charging control FET on and returns to the normal condition.

When a load is connected and discharging starts, the A4004 turns the charging control FET on and

returns to the normal condition. The release mechanism is as follows: the discharging current flows

through an internal parasitic diode of the charging FET immediately after a load is connected and

discharging starts, and the VM pin voltage increases about 0.7V(forward voltage of the diode) from the

GND pin voltage momentarily the A4004 detects this voltage and releases the overcharge condition.

Consequently, in the case that the battery voltage is equal to or lower than the overcharge detection

voltage (V_CU), the A4004 returns to the normal condition immediately, but in the case the battery voltage

is higher than the overcharge detection voltage (V_CU), the chip does not return to the normal condition

until the battery voltage drops below the overcharge detection voltage (V_CU) even if the load is

connected. In addition. If the VM pin voltage is equal to or lower than the overcurrent 1 detection voltage

when a load is connected and discharging starts, load is connected and discharging starts, the chip

does not return to the normal condition

Remark If the battery is charged to a voltage higher than the overcharge detection voltage (V_CU) and the

battery voltage does not drop below the overcharge detection voltage (V_CU) even when a heavy load,

which causes an overcurrent, is connected, the overcurrent 1 and overcurrent 2 do not work until the

battery voltage drops below the overcharge detection voltage (V_CU). Since an actual battery has,

REV1.0

- SEP 2018 RELEASED -

- 5 -

1 2 3 456 7 8...11

中文翻译

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与A4004J6VR相关器件

型号	品牌	获取价格	描述	数据表
A4006	AITSEMI	获取价格	BATTERY MANAGEMENT SINGLE CELL LI-ION BATTERY INDICATOR CHIP
A4006E6R	AITSEMI	获取价格	BATTERY MANAGEMENT SINGLE CELL LI-ION BATTERY INDICATOR CHIP
A4006E6VR	AITSEMI	获取价格	BATTERY MANAGEMENT SINGLE CELL LI-ION BATTERY INDICATOR CHIP
A-400B	TE	获取价格	A-400B SPST,400 Amps, 28 VDC
A400CB10RC	AMD	获取价格	4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory
A400CB10RD	AMD	获取价格	4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory
A400CB10RF	AMD	获取价格	4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory
A400CB10RI	AMD	获取价格	4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory
A400CB11VC	AMD	获取价格	4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory
A400CB11VD	AMD	获取价格	4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory

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