RT8065ZSP データシートの表示（PDF） - Richtek Technology
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RT8065ZSP Datasheet PDF : 13 Pages
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RT8065
Functional Pin Description
Pin No.
SOP-8
(Exposed Pad)
WDFN-8L 3x3
Pin Name
1
1
COMP
2
2
SS
3
3
EN
4
4
VIN
5
5
LX
6
6
RT
7
7
FB
8
8
PGOOD
9 (Exposed Pad) 9 (Exposed Pad) GND
Pin Function
Error Amplifier Compensation Point. The current comparator
threshold increases with this control voltage. Connect
external compensation elements to this pin to stabilize the
control loop.
Soft-Start Control Input. Connect a capacitor from SS to GND
to set the soft-start period. A 10nF capacitor sets the
soft-start period to 800μs (typ.).
Enable Control Input. Float or connect this pin to logic high
for enable. Connect to GND for disable.
Power Input Supply. Decouple this pin to GND with a
capacitor.
Internal Power MOSFET Switches Output. Connect this pin
to the inductor.
Oscillator Resistor Input. Connect a resistor from this pin to
GND sets the switching frequency. If this pin is floating, the
frequency will be set at 2MHz internally.
Feedback. Receives the feedback voltage from a resistive
divider connected across the output.
Power Good Indicator. This pin is an open drain logic output
that is pulled to ground when the output voltage is not within
±12.5% of regulation point.
Ground. The exposed pad must be soldered to a large PCB
and connected to GND for maximum power dissipation.
Function Block Diagram
RT
COMP
FB
SS
EN
SD
OSC
0.8V
EA
Output
Clamp
10µA
Hiccup
Enable
0.7V
P-G
0.4V
UV
Slope
Com
ISEN
OC
Limit
Control
Logic
OTP
Driver
NISEN
N-MOSFET ILIM
VIN
LX
GND
PGOOD
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8065-07 November 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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