RT8075GQW データシートの表示（PDF） - Richtek Technology
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RT8075GQW Datasheet PDF : 11 Pages
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RT8075
Typical Application Circuit
VIN1
RT8075
8 VIN1
CIN1
4.7µF
VIN2
3 VIN2
CIN2
4.7µF
Chip Enable
1 EN1
6 EN2
11
4, 9,
(Exposed Pad)
GND
L1
LX1 10 2.2µH
FB1 2
L2
LX2 5 2.2µH
FB2 7
CFF1
CFF2
R1
110k
R2
110k
R3
110k
R4
110k
VOUT1
COUT1
10µF
VOUT2
COUT2
10µF
Function Block Diagram
EN1/EN2
FB1/FB2
Slope
Compensation
Error
Amplifier
RC
COMP
OSC &
Shutdown
Control
Current
Sense
PWM
Comparator
Current
Limit
Detector
Control
Logic
UVLO &
Power Good
Detector
VREF
VIN1/VIN2
RS1
Driver
LX1/LX2
RS2
GND
Functional Pin Description
Pin No.
Pin Name
Pin Function
1
EN1
Chip Enable of Channel 1 (Active High).
2
FB1
Feedback Input of Channel 1.
3
VIN2
Power Supply Input of Channel 2.
5
LX2
Switching Node of Channel 2.
6
EN2
Chip Enable of Channel 2 (Active High).
7
FB2
Feedback Input of Channel 2.
8
VIN1
Power Supply Input of Channel 1.
10
LX1
Switching Node of Channel 1.
4, 9, 11 (Exposed Pad) GND
Ground. The exposed pad must be soldered to a large PCB and
connected to GND for maximum power dissipation.
www.richtek.com
2
DS8075-04 April 2011
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