RT9209 RICHTEK [Richtek Technology Corporation], RT9209 Datasheet - Page 3

• Manufacturer Part Number: RT9209
• Description: Synchronous Buck PWM DC-DC with Enable & PGOOD
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Function Block Diagram
DS9209/A-08 March 2007
PGOOD
VCC
GND
FB
C
1uF
VCC
PGOOD
Compensation
PWM Loop
Reference
GND
VCC
0.8V
+
-
0.8
0.72V
RT9209/A
+
-
Layout Notes
1. Put C
2. Put RT9209/A to be near the C
3. Put C
4. Put C
Amplifier
Error
BOOT
260kHz/300kHz
IN1
BOOT
VCC
0.5V
1V
Oscillator
SS
1000uF
C
& C
as close as to VCC pin
OUT
as close as to BOOT pin
+
+
-
-
OVP
UVP
IN2
Power on
Soft Start
C
Layout Placement
0.1uF
Reset
BOOT
to be near the MU drain and ML source nodes.
+
+
-
PWM
5uH
L
OUT
Control
Logic
G
Diode
MU
D
Regulation
S
6.5V
GND Return
C
1uF
IN1
VCC
C
470uF
IN2
RT9209/A
www.richtek.com
LGATE
SS
UGATE
BOOT
3