RT8278 RICHTEK [Richtek Technology Corporation], RT8278 Datasheet - Page 3

• Manufacturer Part Number: RT8278
• Description: 2A, 24V, 3MHz Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Function Block Diagram
DS8278-02 March 2011
VIN
EN
10k
3V
1µA
1V
Comparator
Shutdown
V
Regulator
+
-
A
Internal
V
CC
FB
0.4V
0.8V
Comparator
Foldback
Control
UV
+
-
+
-
EA
Oscillator
COMP
RT
Comparator
Current
+
-
Slope Comp
+
-
S
R
0.8V
Current Sense
Amplifier
Q
Q
+
-
V
A
RT8278
www.richtek.com
BOOT
SW
GND
3