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ISL9104AIRUDZ-T Datasheet(PDF) 2 Page - Intersil Corporation |
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ISL9104AIRUDZ-T Datasheet(HTML) 2 Page - Intersil Corporation |
2 / 14 page 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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