rt8288a Richtek Technology Corporation, rt8288a Datasheet - Page 3

• Manufacturer Part Number: rt8288a
• Description: 4a, 21v 500khz Synchronous Step-down Converter
• Manufacturer: Richtek Technology Corporation

Function Block Diagram
DS8288A-01 August 2011
VCC
VIN
EN
FB
5k
3V
1µA
1.2V
1.7V
+
-
-
+
Comparator
Comparator
Shutdown
Lockout
Reference
Regulator
30pF
Generator
+
-
Ramp
1pF
Amplifier
Oscillator
500kHz
Error
400k
Comparator
+
-
PWM
S
R
Current Sense
Q
Amplifier
Driver
-
+
RT8288A
www.richtek.com
BOOT
SW
GND
3