BD9142MUV Datasheet, PDF (3/5 Pages) Rohm – Silicon Monolithic Integrated Circuit

○APPLICATION CIRCUIT1 （Dual Input）
CDET
VIN1
VIN1
EN
VREG
CVERG
R4
R5
AVCC
DET
QVCC
UVLO
VREG
DET
0.8V
CTL
VIN2
M1
PVCC
CIN
CTL
BST
ITH
RITH
CITH
SLOPE OSC
CONTROL
TSD
LOGIC
0.8V 0.4V
Gm SS
SCP
ADJ
R2
R1
CBST
SW
L
RS
CO
CS
AGND PGND
M2
3A
VOUT2
100mA VOUT1
○APPLICATION CIRCUIT2 （Single Input）
VIN
EN
VREG
AVCC
DET
QVCC
UVLO
VREG
DET
0.8V
CTL
VIN
PVCC
CTL
BST
SLOPE OSC
CONTROL
TSD
LOGIC
SW
ITH
0.8V 0.4V
Gm SS
SCP
ADJ
AGND PGND
3A VOUT
3/4
○SETTING THE OUTPUT VOLTAGE
L
SW
CO
R2
ADJ
R1
The Output Voltage is set by the external
resistor divider and is calculated as：
Vout=(R2/R1+1)×VADJ ・・・ ①
VADJ：ADJ pin reference Voltage (0.8V typ)
It’ s possible to adjust the output voltage by R1 and R2.
(The Vout must be set from 1.0V to 3.3V.)
Resistance R1≒10kΩ is recommended. Please confirm the ripple voltage,
if you can use the resistance more than 100kΩor they have a big range
between the setting value of output voltage and input voltage.
REV. A