LM3485
Connection Diagram
Top View
20034609
8 Lead Plastic MSOP-8
NS package Number MUA08A
Package Marking and Ordering Information
Order Number
LM3485MM
LM3485MMX
Package Type
MSOP-8
MSOP-8
Package Marking
S29B
S29B
Supplied As:
1000 units on Tape and Reel
3500 units on Tape and Reel
Pin Description
Pin Name
ISENSE
GND
NC
FB
ADJ
Pin Number
1
2
3
4
5
Description
The current sense input pin. This pin should be connected to Drain
node of the external PFET.
Signal ground.
No connection.
The feedback input. Connect the FB to a resistor voltage divider
between the output and GND for an adjustable output voltage.
Current limit threshold adjustment. It connects to an internal 5.5µA
current source. A resistor is connected between this pin and the
input Power Supply. The voltage across this resistor is compared
with the V
DS
of the external PFET to determine if an over-current
condition has occurred.
Power ground.
Gate Drive output for the external PFET. PGATE swings between
V
IN
and V
IN
-5V.
Power supply input pin.
PWR GND
PGATE
VIN
6
7
8
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