MCP1653 Microchip Technology, MCP1653 Datasheet - Page 2

• Manufacturer Part Number: MCP1653
• Description: (MCP1650 - MCP1653) 750 kHz Boost Controller
• Manufacturer: Microchip Technology

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MCP1650/51/52/53
MCP1650 Block Diagram
DS21876A-page 2
SHDN
FB
V
IN
Voltage Feedback
V
DC = 80% V
DC = 56% V
1.22V
V
DUTY
REF
Internal Osc. with
2 fixed Duty Cycles
ON/OFF
Control
V
+
-
IN
V
REF
+
-
IN
IN
< 3.8V
> 3.8V
V
LOW
V
MCP1650
V
V
V
HIGH
DUTY
HIGH
LOW
Osc.
OSC. OUT
S
R
OFF
ON/
ISNS
Pulse
Latch
Ref
1.22V
+
Q
-
Soft-
Start
Current Limit
1R
9R
DR
0.122V
+
-
-
+
V
2004 Microchip Technology Inc.
IN
GND
EXT
CS