Features
 1.8MHz Switching Frequency
 EN for Power Sequencing
 Wide 3V to 5.5V Operating Input Range
 Output Adjustable from 0.6V
 Up to 2A Output Current
 120mΩ and 80mΩ Internal Power MOSFET
Switches
 PFM Operation
 DIO6690：With Output Discharge
DIO6690N：Without Output Discharge
 Short-Circuit Protection (SCP) with Hiccup
Mode
 Stable with Low ESR Output Ceramic
Capacitors
 100% Duty Cycle
 Available in DFN2*1.5-8 Package
Applications
 Wireless/Networking Cards
 Portable and Mobile Devices
 Battery-Powered Devices
 Low-Voltage I/O System Power
 Solid-State Drives (SSDs)
Descriptions
The DIO6690/N is a monolithic, step-down,
switch-mode converter with built-in, internal
power MOSFETs. It achieves 2A of output current
from a 3V to 5.5V input voltage with excellent
load and line regulation. The output voltage can
be regulated as low as 0.6V. DIO6690/N adopts
sleep-mode to achieve high efficiency under
extremely light load condition.
The constant-on-time control scheme provides a
fast transient response and eases loop
stabilization. Full protection features include
cycle-by-cycle current limiting and thermal
shutdown.
The DIO6690/N is available in DFN2*1.5-8
package and requires a minimal number of
readily available, standard, external
components.
The DIO6690/N is ideal for a wide range of
applications, including high-performance DSPs,
wireless power, portable and mobile devices, and
other low-power systems.