ISL9103 Maxim Integrated Products, ISL9103 Datasheet - Page 7

• Manufacturer Part Number: ISL9103
• Description: 500mA 2.4MHz Low IQ High Efficiency Synchronous Buck Converter
• Manufacturer: Maxim Integrated Products

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Typical Operating Performance
Pin Descriptions
VIN
Input supply voltage. Typically connect a 10µF ceramic
capacitor to ground.
NC
No connect; leave 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.
500mA/DIV
500mA/DIV
FIGURE 17. LOAD TRANSIENT IN PWM MODE (V
FIGURE 19. LOAD TRANSIENT IN PWM MODE (V
50mV/DIV
50mV/DIV
5V/DIV
5V/DIV
V
V
V
V
O
O
OUT
I
SW
o
= 1.5V, 200mA TO 500mA)
= 2.5V, 200mA TO 500mA)
(AC COUPLED)
7
(Continued)
IN
IN
= 3.6V,
= 3.6V,
ISL9103, ISL9103A
V
V
OUT
I
SW
o
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.
500mA/DIV
500mA/DIV
FIGURE 18. LOAD TRANSIENT IN PWM MODE (V
FIGURE 20. LOAD TRANSIENT IN PWM MODE (V
50mV/DIV
50mV/DIV
5V/DIV
5V/DIV
V
V
V
V
OUT
I
SW
o
O
O
= 1.5V, 500mA TO 200mA)
= 2.5V, 500mA TO 200mA)
IN
IN
June 26, 2009
= 3.6V,
= 3.6V,
V
V
OUT
FN6828.1
I
SW
o