ISL9104A Intersil Corporation, ISL9104A Datasheet - Page 7

• Manufacturer Part Number: ISL9104A
• Description: 500mA 4.3MHz Low IQ High Efficiency Synchronous Buck Converter
• Manufacturer: Intersil Corporation

Typical Operating Performance
Pin Descriptions
VIN
Input supply voltage. Typically connect a 4.7µF ceramic
capacitor to ground.
NC
No connect, leave it floating.
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.
SW
Switching node connection. Connect to one terminal of
inductor.
GND
Ground connection.
FIGURE 17. LOAD TRANSIENT IN PWM MODE (V
FIGURE 19. LOAD TRANSIENT IN PWM MODE (V
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500mA/DIV
500mA/DIV
20mV/DIV
20mV/DIV
5V/DIV
5V/DIV
V
V
V
V
V
V
O
O
OUT
I
OUT
I
SW
SW
o
o
= 1.5V, 200mA TO 500mA)
= 2.5V, 200mA TO 500mA)
(AC COUPLED)
(AC COUPLED)
7
(Continued)
IN
IN
= 3.6V,
= 3.6V,
ISL9104, ISL9104A
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.
FIGURE 18. LOAD TRANSIENT IN PWM MODE (V
FIGURE 20. LOAD TRANSIENT IN PWM MODE (V
500mA/DIV
500mA/DIV
20mV/DIV
20mV/DIV
5V/DIV
5V/DIV
V
V
V
V
O
O
V
V
I
OUT
I
SW
o
SW
OUT
o
= 1.5V, 500mA TO 200mA)
= 2.5V, 500mA TO 200mA)
(AC COUPLED)
December 23, 2008
IN
IN
= 3.6V,
= 3.6V,
FN6829.0