Features
 Low RDS(ON) for internal switches (top/bottom)
120 mΩ / 75 mΩ, 2.0 A
 4.5 ~ 24 V input voltage range
 High-efficiency synchronous-mode
 Internal soft start limits the inrush current
 Over current protection
 Output short circuit protection with hiccup
mode
 Thermal shutdown
 Green package:
TSOT23 -6 is pin compatible
Applications
 Portable navigation device
 Set top box
 Portable TV
 LCD TV
Descriptions
The DIO69209 is high-efficiency, high frequency
synchronous step-down DC-DC regulator ICs
capable of delivering up to 2 A output currents.
The DIO69209 family operate over a wide input
voltage range from 4.5 V to 24 V and integrate
main switch and synchronous switch with very
low RDS(ON) to minimize the conduction loss.
The DIO69209 adopts the pure COT architecture
to achieve fast transient responses for high
step-down applications. In addition, it operates at
pseudo-constant frequency of 700 kHz under
heavy load conditions to minimize the size of
inductor and capacitor. The DIO69209 is stable
with extremely low ESR, high capacitance.
The DIO69209 always operate in continuous
conduction mode, which reduces the output
ripple voltage in light load compared to
discontinuous conduction mode.