MAX8664 Maxim Integrated Products, MAX8664 Datasheet - Page 7

• Manufacturer Part Number: MAX8664
• Description: Step-Down Controller
• Manufacturer: Maxim Integrated Products

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PIN
17
18
19
20
PWRGD
NAME
ILIM1
V
FB1
CC
Controller with Fast Transient Response
_______________________________________________________________________________________
Internal Analog Supply. V
When using a 4.5V to 5.5V supply, connect a 10Ω resistor from V
internal circuitry.
Open-Drain Power-Good Output. PWRGD is high impedance when controllers 1 and 2 (using the internal
reference) are in regulation. PWRGD is low if the outputs are out of regulation, if there is a fault condition, or if
the IC is shut down. PWRGD does not reflect the status of output 2 in the MAX8664A or when REFIN2 is
connected to an external reference in the MAX8664B.
Feedback Input for Controller 1. Connect FB1 to the center of a resistor-divider connected between the output
of controller 1 and GND to set the desired output voltage. V
Current-Limit Set for Controller 1. Connect a resistor from the drain of the high-side MOSFET(s) to ILIM1. See
the Setting the Overcurrent Threshold section.
Low-Cost, Dual-Output, Step-Down
CC
regulates to 1.5V below V
FUNCTION
VL.
Connect a 1µF ceramic capacitor from V
FB1
Pin Description (continued)
regulates to 0.6V.
CC
to IN. V
CC
is used to power the IC’s
CC
to GND.
7