Features
 1.8 MHz switching frequency
 EN for power sequencing
 Wide 2.3 V to 5.5 V operating input range
 Output adjustable from 0.6 V
 Up to 2 A output current
 120 mΩ and 80 mΩ internal power MOSFET
switches
 Forced PWM operation
 Output discharge
 Short-circuit protection (SCP) with hiccup
mode
 Stable with low ESR output ceramic
capacitors
 Available in SOT563 and DFN2*2-8 packages
 100% duty cycle
Applications
 Wireless/networking cards
 Portable and mobile devices
 Battery-powered devices
 Low-voltage I/O system power
 Solid-state drives (SSDs)
Descriptions
The DIO6905B is a monolithic, step-down,
switch-mode converter with built-in, internal
power MOSFETs. It achieves 2 A of output
current from a 2.3 V to 5.5 V input voltage with
excellent load and line regulation. The output
voltage can be regulated as low as 0.6 V.
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 DIO6905B is available in SOT563 and
DFN2*2-8 packages and requires a minimal
number of readily available, standard, external
components.
The DIO6905B is ideal for a wide range of
applications, including high-performance DSPs,
wireless power, portable and mobile devices, and
other low-power systems.