CM3706 Datasheet, PDF (3/11 Pages) Champion Microelectronic Corp. – 1.5MHz, 600mA Synchronous Step-Down Regulator

PIN DESCRIPTION
CM3706
1.5MHz, 600mA Synchronous
Step-Down Regulator
Pin No.
Symbol
1
RUN
2
GND
3
SW
4
VIN
5
FB
Description
Regulator Enable control input. Drive RUN above 1.5V to turn on the part. Drive RUN
below 0.3V to turn it off. In shutdown, all functions are disabled drawing <1µA supply
current. Do not leave RUN floating.
Ground Pin.
Power Switch Output. It is the Switch note connection to Inductor. This pin connects to the
drains of the internal P-CH and N-CH MOSFET switches.
Supply Input Pin. Must be closely decoupled to GND, Pin 2, with a 2.2µF or greater ceramic
capacitor.
VFB (CM3706): Feedback Input Pin. Connect FB to the center point of the external resistor
divider. The feedback threshold voltage is 0.6V.
ORDERING INFORMATION
Part Number
CM3706IM25
CM3706GIM25
Voltage
Adj
Adj
Temperature Range
-40℃ to +85℃
-40℃ to +85℃
CM3706 X X X
Package
TSOT23-5
TSOT23-5
Lead Free
Blank : Normal
G: Lead Free
Package
Suffix for
Temperature
I : -40℃ to +85℃
Package
M25 : TSOT23-5
ABSOLUTE MAXIMUM RATINGS(Note 1)
Absolute maximum ratings are those values beyond which the
device could be permanently damaged.
Input Supply Voltage...................................................–0.3V to 6.0V Peak SW Sink and Source Current………...…………….. 1.5A
RUN, VFB Voltages ………………………...…– 0.3V to (VIN + 0.3V) Junction Temperature (Note 2) ........... ........................ 125°C
SW Voltage....…………........………..……..… – 0.3V to (VIN + 0.3V) Storage Temperature Range ....................... – 65°C to 150°C
Operating Temperature Range….…………..…-40°C to +85°C Lead Temperature (Soldering, 10 sec)......................... 300°C
OPERATING CONDITIONS
Temperature Range ............................. -40°C to 85°C
Vin Operating Range .........................2.5V to 5.5V
2006/12/20Rev. 1.6
Champion Microelectronic Corporation
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