rt8803a Richtek Technology Corporation, rt8803a Datasheet - Page 4

• Manufacturer Part Number: rt8803a
• Description: 2/3-phase Controller High-density Power Supply
• Manufacturer: Richtek Technology Corporation

RT8803A
Function Block Diagram
www.richtek.com
4
VR_Ready
VID_SEL
VR_HOT
VR_FAN
FBRTN
COMP
TSEN
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
OFS
SS
FB
Temperature
DAC
Processing
& PGOOD
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Soft Start
Clamp
Droop Tune
Detection
-
+
& Hi-I
EA
ADJ
VDD
Power On
VTT/EN
Reset
Processing
Detection
GND
Current
SUM/N
Sample
& OCP
& Hold
DVD
Mux
Generator
Modulator
Oscillator
& Output
CSA
Buffer
Ramp
Pulse
Width
&
-
+
DS8803A-05 August 2007
Mux
Mux
RT
PWM1
PWM2
PWM3
IMAX
ISN1
ISN23
ISP1
ISP2
ISP3