RT9201 Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Fabricante
RT9201 Datasheet PDF : 13 Pages
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Suggested Capacitors For CIN and COUT
Component Supplier
Part No.
TDK
C2012X5R0J106M
C3225X5R0J226M
Panasonic
ECJ2FB0J106M
ECJHVB0J226M
JMK212BJ106M
TAIYO YUDEN
JMK212BJ226MG
JMK316BJ226ML
Function Block Diagram
VDD
EN
Capacitance (uF)
10
22
10
22
10
22
22
RT9201
Case Size
0805
1210
0805
1206
0805
0805
1206
PVDD
OSC & Shutdown
Control
Current
Sense
Error
Slope
Amplifier Compensation
FB
Control
Logic
Driver
LX
SS
300kΩ
0.8V VREF
PWM
Comparator
Zero
Detector
GND
PGND
Functional Pin Description
Pin No.
1
2
3
4, 10
5
6
Pin Name
Pin Function
EN
Tie this pin to 1.4V or higher to enable the device. Tie below 0.4V to shut-down.
SS
Soft Start, connect a capacitor from this pin to GND.
FB
Feedback Input pin. Connect a resistive voltage divider from the output voltage to FB
to GND.
NC
No Connection.
GND
Analog Ground.
PGND Power Ground.
7
LX
Switch node. Drains of the internal P-Channel and N-Channel MOSFET switches.
Connect an inductor to LX pins together as close as possible.
8
PVDD
9
VDD
Exposed Pad (11) GND
Main Power Supply Pin.
Device Input Power Pin.
The exposed pad must be soldered to a large PCB and connected to GND for
maximum power dissipation.
DS9201-12 August 2007
www.richtek.com
3
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