MP2108DQ MPS [Monolithic Power Systems], MP2108DQ Datasheet - Page 6

• Manufacturer Part Number: MP2108DQ
• Description: 2A, 6V, 740KHz Synchronous Buck Converter
• Manufacturer: MPS [Monolithic Power Systems]

OPERATION
MP2108 Rev 1.1
10/2/2006
OFF ON
C6
C5
V
RUN
REF
SS
10
9
6
OSCILLATOR
REGULATOR
V
CKT & LDO
720KHz
BP
ENABLE
2.4V
5
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
SGND
Figure 1—Functional Block Diagram
REGULATOR
RAMP
DRIVE
GATE
MP2108 – 2A, 6V, 740KHz SYNCHRONOUS BUCK CONVERTER
THRESHOLD
COMPARATOR
CURRENT
LIMIT
© 2006 MPS. All Rights Reserved.
PWM
www.MonolithicPower.com
--
+
COMPARATOR
C4
CURRENT
SHUTDOWN
Vdr
THERMAL
LIMIT
UVLO &
8
CONTROL
LOGIC
R3
C3
AMPLIFIER
CURRENT
AMPLIFIER
COMP
SENSE
ERROR
+
--
+
--
GM
Vdr
+
--
--
--
+
V
0.9V
V
IN
FB
2
1
3
4
7
BST
LX
PGND
FB
C7
C1
L1
V
2.6V to 6V
IN
R2
R1
C2
V
OUT
6