BD8305MUV Rohm, BD8305MUV Datasheet - Page 3

• Manufacturer Part Number: BD8305MUV
• Description: High-effciency Step-up/down Switching Regulators
• Manufacturer: Rohm

●Description of Pins
●Block Diagram
○
BD8305MUV
c
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PVCC
VCC
STB
RT
16
17
18
19
20
Fig. 1 Pin layout
PVCC
15 14 13 12 11
1
GND
2
INV
Lx1
FB
3
q
ERROR_AMP
PGND
4
STB
Soft
Start
STBY_IO
VREF
5
RT
10
9
8
7
6
OSC
VOUT
VOUT
PGND
Lx2
Reference
VREF
Fig. 2 Block diagram
STOP
FB H
DRIVER
CONTROL
PRE
PWM
VCC
3/15
CONTROL
TIMMING
Pin No.
13～14
15～17
16000 ｃount
9～12
3～4
5～6
7～8
UVLO
SCP
18
19
20
LX2
1
2
CONTROL
TIMMING
DRIVER
PRE
Pin Name
PVCC
PGND
PVCC
GND
V
VCC
STB
INV
Lx2
Lx1
FB
RT
DRIVER
OUT
DRIVER
PRE
PRE
Error AMP output terminal
Error AMP input terminal
Ground terminal
Output voltage terminal
Output side coil connecting terminal
Power transistor ground terminal
Input side coil connecting terminal
DC/DC converter input terminal
Control part power supply input
terminal
ON/OFF terminal
Oscillation frequency set terminal
LX1
PGND
Function
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Technical Note
2010.05 - Rev.D