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ISL9104AIRUDZ-T Datasheet(PDF) 2 Page - Intersil Corporation

Part # ISL9104AIRUDZ-T
Description  500mA 4.3MHz Low IQ High Efficiency Synchronous
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL9104AIRUDZ-T Datasheet(HTML) 2 Page - Intersil Corporation

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ISL9104, ISL9104A
2
FN6829.5
September 21, 2011
Typical Applications
Pin Descriptions
PIN NUMBER
PIN NAME
DESCRIPTION
1
VIN
Input supply voltage. Typically connect a 10µF ceramic capacitor to ground.
2
EN
Regulator enable pin. Enable the device when driven to high. Shut down the chip and discharge
output capacitor when driven to low. Do not leave this pin floating.
3
NC
No connect; leave floating.
4
FB
Buck converter output feedback pin. For adjustable output version, its typical value is 0.8V and
connect it to the output through a resistor divider for desired output voltage; for fixed output version,
directly connect this pin to the converter output.
5
GND
Ground connection.
6
SW
Switching node connection. Connect to one terminal of inductor.
C2
4.7µF
L
SW
GND
FB
VIN
EN
INPUT: 2.7V TO 6V
OUTPUT
UP TO 500mA
C1
4.7µ F
ISL9104, ISL9104A FIXED OUTPUT
1.0µH
C2
4.7µF
L
SW
GND
FB
VIN
EN
INPUT: 2.7V TO 6V
OUTPUT
UP TO 500mA
C1
4.7µF
ISL9104, ISL9104A ADJUSTABLE OUTPUT
1.0µH
R1
100k
R2
100k
C3
47pF
ENABLE
DISABLE
ENABLE
DISABLE
FIGURE 2. TYPICAL APPLICATIONS DIAGRAM
Note: For adjustable output version, the internal feedback resistor divider is disabled and the FB pin is directly connected to the error
amplifier.


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