rt9259a Richtek Technology Corporation, rt9259a Datasheet - Page 4

• Manufacturer Part Number: rt9259a
• Description: Synchronous Buck Dc-dc Linear Power Controller
• Manufacturer: Richtek Technology Corporation

RT9259A
www.richtek.com
4
Function Block Diagram
RT_DIS
VREF
GND
DRV
FBL
REF_OUT
Inhibit
VCC12
Shutdown
Oscillator
-
+
+
V
0.8V
REF1
Reference
Voltage
V
REF2
FB
0.4V
SSE
+
+
-
-
+
+
-
EA
Bias
COMP
+
-
PWM
On Reset
Power
Fault Logic
SSE
Soft-Start
&
POR
Inhibit
Driver
Logic
OC
Regulator
PH_M
5V
-
+
+
-
DS9259A-02 March 2007
1.5V
0.4V
5VDD
40uA
OCSET
VCC12
BOOT
UGATE
PHASE
LGATE
PGND