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SP6652 Fiches technique(PDF) 3 Page - Sipex Corporation

No de pièce SP6652
Description  1A, High Efficiency, Fixed 1.4 MHz Current Mode PWM Buck Regulator
PDF  16 Pages
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Fabricant  SIPEX [Sipex Corporation]
Site Internet  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP6652 Fiches technique(HTML) 3 Page - Sipex Corporation

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3
May25-07 RevH
SP6652 1A, High Efficiency, Current Mode PWM Buck Regulator
© 2007 Sipex Corporation
pin Description
SP6652
10 Pin MSOP
10
9
8
7
6
LX
P
SVIN
SYNC
MODE
PGND
SGND
FB
COMP
SD
1
2
3
4
5
VIN
SP6652
10 Pin DFN
10
9
8
7
6
1
2
3
4
5
P
GND
SGND
FB
COMP
SD
LX
P
VIN
S
VIN
SYNC
MODE
Pin
Number
pin
NAME
Description

PGND
Power Ground Pin. Synchronous rectifier current returns through
this pin.

SGND
Internal Ground Pin. Control circuitry returns current to this pin.
3
FB
External feedback network input connection. Connect a resistor from
FB to ground and from FB to VOUT to control the output voltage.
Regulation point at FB = 0.8V Typical.
4
COMP
Compensation pin for error loop. Connect an R and C in series to
ground to control open loop pole and zero.
5
SD
Shutdown control input. Tie pin to VIN for normal operation, tie to
ground for shutdown. TTL input threshold.
6
MODE
Connect this pin to VIN.
7
SYNC
An external clock signal can be connected to this pin to synchronize
the switching frequency.
8
SVIN
Internal supply voltage. Control circuitry is powered from from this
pin. Use an RC filter close to the pin to cut down supply noise.
9
PVIN
Supply voltage for the output driver stage. Inductor charging current
passes through this pin.
0
LX
Inductor switching node. Inductor tied between this pin and the
output capacitor to create regulated output voltage.



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