RT9715 データシートの表示（PDF） - Richtek Technology
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RT9715 Datasheet PDF : 15 Pages
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RT9715
Typical Application Circuit
Supply Voltage
2.7V to 5.5V
RT9715A/C/E/G
Chip Enable
RT9715B/D/F/H
Chip Enable
Pull-Up Resistor (10K to 100K)
USB Controller
VIN
FLG
CIN
RT9715
1uF
VOUT
EN/EN
GND
Over -Current
COUT
10uF
150uF
VBUS
D+
D-
GND
Ferrite
Beads
Data
Note : A low-ESR 150uF 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 No.
SOT-23-5 SOT-23-5 SOP-8 / WDFN-8L Pin Name
SOT-23-5
(G-Type) (R-Type) MSOP-8 3X3
Pin Function
1
1
5
6 , 7 , 8 6 , 7 , 8 VOUT Output Voltage.
2
2
2
1
1
GND
Ground.
3
--
4
4
5
5
--
3
1
5
5
FLG
Fault FLAG Output.
3
4
4
EN/EN Chip Enable (Active High/Low).
4
2,3
2 , 3 VIN
Power Input Voltage.
--
--
-- NC
No Internal Connection.
9 (Exposed
--
--
--
--
Pad)
The exposed pad must be soldered to a large
PCB and connected to GND for maximum
power dissipation.
Function Block Diagram
EN/EN
Bias
UVLO
VIN
Current
Limiting
Oscillator
Charge
Pump
Thermal
Protection
Gate
Control
Output Voltage
Detection
Auto Discharge
Delay
VOUT
FLG
GND
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2
DS9715-03 April 2011
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