TM
MP2106 – 1.5A, 15V, 800KHz SYNCHRONOUS BUCK CONVERTER
OPERATION
VIN
7
VIN
2.6V to 15V
C1
RUN
OFF ON
5
ENABLE
CKT & LDO
REGULATOR
VREF
C6
4
VBP
2.4V
800KHz
OSCILLATOR
VBP
SS
C5
1
GATE
DRIVE
REGULATOR
CURRENT
SENSE
Vdr
AMPLIFIER
+
--
Vdr
PWM
COMPARATOR
+
--
CONTROL
LOGIC
Vdr
BST
6
LX
8
C7
L1
RAMP
CURRENT
LIMIT
COMPARATOR
UVLO &
THERMAL
SHUTDOWN
+
--
+
--
--
GM --
ERROR
AMPLIFIER
+
PGND
9
FB
2
CURRENT
LIMIT
THRESHOLD
VFB
0.895V
10
SGND
3
C4
COMP
R3
C3
VOUT
C2
R2
R1
Figure 1—Functional Block Diagram
MP2106_BD01
MP2106 Rev. 1.6
www.MonolithicPower.com
5
2/22/2006
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