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MB3843PFV, MB3845, MB3845PFV-G

Table of contents:
Info of MB3843PFV
Info of MB3845
Info of MB3845PFV-G

MB3843PFV, MB3845, MB3845PFV-G Selling Leads, Datasheet

MFG:FUJ Package Cooled:SSOP-16 D/C:9903

MB3843PFV, MB3845, MB3845PFV-G Datasheet download

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Part Number: MB3843PFV

MFG: FUJ

Package Cooled: SSOP-16

D/C: 9903

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MB3845 General Description

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

VIN is 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.

MB3845 Maximum Ratings

Parameter	Symbol	Condition	Rating		Unit
Parameter	Symbol	Condition	Min.	Max.	Unit
Power supply voltage	V_IN	-	0.3	7.0	V
ENABLE voltage	V_EN	-	0.3	7.0	V
Switch current	I_SW	-	-	1.8	A
Power dissipation	P_D	Ta = +85°C	-	216	mW
Storage temperature	T_stg	-	-55	+125	°C

WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.

MB3845 Features

• Low on resistance switch (typ. 100m)
• Low input voltage operation (2.5 V to 5.5 V)
• Switch current (max. 0.6 A)
• UVLO    :V_IN threshold                                             2.3V/2.1 V hysteresis 200 mV
• ENABLE :EN threshold                                              EN 1.4V/1.6 V for MB3842, EN 1/2 VIN for MB3845
                :Power supply current at output off = 0A 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.

MB3845 Connection Diagram

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