MB3845

更新时间： 2024-02-29 11:21:42

品牌	Logo	应用领域
富士通 - FUJITSU		开关
页数	文件大小	规格书
19页	142K
描述
Power Management 2-ch Switch IC

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MB3845 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
零件包装代码：	SSOP	包装说明：	LSSOP,
针数：	20	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.79	可调阈值：	YES
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT	JESD-30 代码：	R-PDSO-G20
长度：	6.5 mm	信道数量：	1
功能数量：	2	端子数量：	20
最高工作温度：	85 °C	最低工作温度：	-20 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	LSSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	1.45 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	2.5 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	温度等级：	OTHER
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	4.4 mm	Base Number Matches：	1

FUJITSU SEMICONDUCTOR

DATA SHEET

DS04-27604-2E

ASSP For Power Supply Applications

Power Management 2-ch Switch IC

MB3842/MB3845

■ DESCRIPTION

The MB3842/3845 is a power management switch with built-in 2-channel low-on resistance (typ. 100mΩ) switch.

Output control is by means of a control signal, and the MB3842 is designed for high-active operation (output on

when EN is Hi), while the MB3845 is designed for low-active operation (output on when EN is low.)

To provide adaptability to a variety of operations, the MB3842/3845 features low input voltage (V^IN> 2.5V)

operation and stable low-on resistance independent of input voltage. The switching current limit can be set from

100mA to 600mA by using external resistance, and when overcurrent conditions are detected the OC output goes

low to provide an external notification signal.

V^INis divided between the two channels, which operate independently of each other.

In addition, an off-state reverse current prevention function is provided to ensure accurate on/off switching action.

■ FEATURES

• Low on resistance switch (typ. 100mΩ)

• Low input voltage operation (2.5 V to 5.5 V)

• Switch current (max. 0.6 A)

• UVLO

• ENABLE

:V^INthreshold

:EN threshold

2.3V/2.1 V hysteresis 200 mV

EN 1.4V/1.6 V for MB3842, EN 1/2 V^INfor MB3845

:Power supply current at output off = 0µA EN < 0.8V for MB3842, EN = V^INfor MB3845

• External setting for soft start time and switch current limit.

• Over-temperature detection (switch latched off), over-current detection (not latched)

• OC pin flag set following overcurrent detection, over-temperature detection, or UVLO detection.

• Reverse current prevention at OFF (V^IN≥ 1.5 V)

• Either channel may be operated alone.

■ PACKAGE

20-pin plastic SSOP

(FPT-20P-M03)

12 3 4 5 6 7...19

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