Features
 Low RDS(ON) for internal switches (top/bottom)
80 mΩ/40 mΩ, 3.0 A
 4.5 ~ 28 V input voltage range
 High-efficiency synchronous mode
 Internal soft-start limits the inrush current
 Overcurrent protection
 Output short circuit protection with hiccup
 Thermal shutdown
 Available in the TSOT23-6 package
Applications
 Portable navigation devices
 Set-top boxes
 Portable TVs
 LCD TVs
Descriptions
The DIO54302 is a high-efficiency, high-frequency
synchronous step-down DC-DC regulator IC
capable of delivering up to 3 A output currents.
The DIO54302 operates over a wide input voltage
range from 4.5 V to 28 V and integrates the main
switch and synchronous switch with very low
RDS(ON) to minimize the conduction loss.
The COT architecture with pseudo-fixed switching
frequency operation provides a fast transient
response and eases loop stabilization. The
DIO54302 operates in pulse skip mode where the
device maintains a high efficiency during light
load operation.
Protection features include overcurrent
protection and thermal shutdown.
The DIO54302 requires a minimal number of
readily-available, standard, external components
and is available in a space-saving TSOT23-6
package.