at9173eg

Manufacturer Part Numberat9173eg
DescriptionBus Termination Regulator
ManufacturerAME, Inc.
at9173eg datasheet
 


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AME, Inc.
AT9173
n Pin Configuration
SOP- 8
Top View
8
7
6
5
AT9173
1
2
3
4
n Pin Description
Pin name
Input voltage pin which supplies current to the V
decoupled voltage to prevent the input rail from dropping during large load transient. A
IN
large and low ESR capacitor is recommended to use that should be placed as close as
possible to the V
GND
Ground pin. Tie directly to ground plance.
Voltage control pin which supplies the internal control circuitry and provides the drive
voltage. The driving capability of output current is proportioned to the VCNTL. Connect
VCNTL
this pin to 5V bias supply to handle large output current with at least 1uF capacitor from
this pin to GND. An important note is that V
Reference voltage input and active low shutdown control pin. Two resistors dividing
down the V
REFEN
GND to turn off the device by an open-drain, such as 2N7002 N-Channel MOSFET.
Regulator output. V
bus resistors. It is capable of sinking and sourcing current while regulating the output
OUT
rail. To maintain adequate large signal transient response, typical value of 1000uF
electrolytic capacitor with 10uF ceramic capacitors are recommended to reduce the
effects of current transients on V
NC*
No Connection. Not internal connected.
GND Pad*
Connected to GND plance for better heat dissipation.
* By SOP-8/PP only
Rev. C.05
AT9173A
8
1. IN
2. GND
3. REFEN
4. OUT
5. VCNTL
1
6. VCNTL
7. VCNTL
8. VCNTL
Pin Description
pin.
IN
voltage on this pin to create the regulatedoutput voltage. Pulling this pin to
IN
is regulated from REFEN voltage that is used to terminate the
OUT
OUT
Bus Termination Regulator
SOP- 8/PP
Top View
AT9173E
7
6
5
1. IN
2. GND
AT9173
3. REFEN
4. OUT
5. NC
2
3
4
6. VCNTL
7. NC
8. NC
pin. Connect this pin to a well-
OUT
should be kept lower or equal to VCNTL.
IN
.
3