MP1494 – SYNCHRONOUS STEP-DOWN CONVERTER
FUNCTIONAL BLOCK DIAGRAM
IN
+
-
VCC
Regulator
RSEN
Currrent Sense
VCC
Amplifer
Bootstrap
Regulator
BST
Oscillator
HS
Driver
+
-
SW
Comparator
On Time Control
Logic Control
1pF
VCC
Current Limit
Comparator
50pF
400k
Reference
EN/SYNC
LS
Driver
1MEG
6.5V
+
+
-
FB
GND
Error Amplifier
AAM
Figure 1: Functional Block Diagram
MP1494 Rev. 1.04
12/26/2012
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