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XC9147/XC9148

Series

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TYPICAL APPLICATION CIRCUIT/PARTS SELECTION GUIDE

＜

OR connection: XC9148 C/F/M/L types＞

The XC9148 C/F/M/L types compare the input voltage BAT and output voltage VOUT to optimally control the orientation of the

parasitic diode of the Pch synchronous switching FET even during standby mode, so that the input side and output side do not

connect through the parasitic diode of the Pch synchronous switching FET.

Even if an external voltage higher than the BAT voltage is applied to the output side by controlling this parasitic diode, the input

side and output side do not connect, and output OR connection is possible.

This type can be used for OR connection is possible such as backup power supply and output OR connection assuming the input

of an external power supply.

Moreover, the design which suppresses the discharge current from a battery at the time of OR connection is adopted. This can

suppress battery discharge during OR connection.

＜

Liquid leak reduction: G/J/H/K/M/L types＞

G/H/M/J/K/L types have UVLO function with UVLO release voltage of 1.6V.

This UVLO function stops the IC when the battery voltage drops. This operation reduces battery leakage in 2-cell alkaline battery

applications.

Lx

BAT

GND

VOUT

CE

CIN

Battery

L

XC9148 C/F/M/L Type

CL

VOUT

VDD

MCU

VDD

I/O

RF

Sensor

VBAT

Main Power

5V

Iq_bat :0.12μA

(C/F Type)

Main Power available

Main Power not available

Control Signal for Ship Mode