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SD02H0SK Fiches technique(PDF) 4 Page - International Rectifier

No de pièce SD02H0SK
Description  6A HIGHLY INTEGRATED WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
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Fabricant  IRF [International Rectifier]
Site Internet  http://www.irf.com
Logo IRF - International Rectifier

SD02H0SK Fiches technique(HTML) 4 Page - International Rectifier

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4
IR3863MPBF
8/8/2012 Rev3.2
Pin Description
NAME
NUMBER
I/O
LEVEL
DESCRIPTION
FCCM
1
3.3V
Forced Continuous Conduction Mode (CCM). Ground this pin
to enable diode emulation mode or discontinuous conduction
mode (DCM). Pull this pin to 3.3V to operate in CCM under all
load conditions.
ISET
2
Connecting resistor to PHASE pin sets over current trip point.
PGOOD
3
5V
Power good open drain output
– pull up with a resistor to 3.3V
GND
4,17
Reference
Bias return and signal reference.
FB
5
3.3V
Inverting input to PWM comparator, OVP / PGOOD sense.
SS
6
3.3V
Soft start/shutdown. This pin provides user programmable soft-
start function. Connect an external capacitor from this pin to
GND to set the startup time of the output voltage. The converter
can be shutdown by pulling this pin below 0.3V.
NC
7
-
-
3VCBP
8
3.3V
For internal LDO. Bypass with a 1.0µF capacitor to AGND. A
resistor in series with the bypass capacitor may be required in
single-ground plane designs. Refer to Layout
Recommendations for details.
NC
9
-
-
VCC
10
5V
VCC input. Gate drive supply. A minimum of 1.0µF ceramic
capacitor is required.
PGND
11
Reference
Power return.
PHASE
12
VIN
Phase node (or switching node) of MOSFET half bridge.
VIN
13
VIN
Input voltage for the system.
BOOT
14
VIN +VCC
Bootstrapped gate drive supply
– connect a capacitor to
PHASE.
FF
15
VIN
Input voltage feed forward
– sets on-time with a resistor to VIN.
EN
16
5V
Enable pin to turn on and off the device. Use two external
resistors to set the turn on threshold (see Electrical
Specifications) for input voltage monitoring.


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