RT9711A データシートの表示（PDF） - Richtek Technology
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RT9711A Datasheet PDF : 17 Pages
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RT9711A/B/C/D
Pin Configurations
VOUT
VIN
5
4
2
3
FLG GND EN/EN
SOT-23-5/TSOT-23-5
(TOP VIEW)
VIN EN/EN
5
4
2
3
VOUT GND NC
SOT-23-5 (G-Type)
GND
VIN
2
VIN
3
EN/EN
4
8
VOUT
7
VOUT
6
VOUT
5
FLG
SOP-8/MSOP-8
Typical Application Circuit
Pull-Up Resistor (10K to 100K)
Supply
Voltage 5V
CIN
1µF
VIN
FLG
RT9711A/B/C/D
USB Controller
Over -Current
RT9711A/C
Chip Enable
RT9711B/D
Chip Enable
VOUT
EN/EN
COUT
GND
10µF
150µF
VBUS
D+
D-
GND
Ferrite
Beads
Data
Note: A low-ESR 150μF aluminum electrolytic or tantalum
between VOUT and GND is strongly recommended to meet
the 330mV maximum droop requirement in the hub VBUS.
(see Application Information Section for further details)
Functional Pin Description
Pin Name Pin Function
VIN
Power Input Voltage
VOUT Output Voltage
GND
Ground
EN/EN
Chip Enable. Never let this pin floating.
(Active High for RT9711A/C, Active Low
for RT9711B/D)
FLG
Open-Drain Fault Flag Output
Function Block Diagram
EN/EN
Bias
UVLO
Oscillator
Charge
Pump
Thermal
Protection
Current
Limiting
Gate
Control
Output Voltage
Detection
Delay
VIN
VOUT
FLG
GND
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2
DS9711A/B/C/D-03 April 2011
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