DIY8883
High-Efficiency, 45V, 3A, Digitally Calibrated
Synchronous Step-Down Converter
DESCRIPTION
FEATURES
The DIY8883 is a high frequency, synchronous,
Wide 3.5V to 45V Operation Input Range
3A Continuous Output Current
High Efficiency Synchronous Mode Control
Internal 90mΩ/50mΩ Low RDS(ON) MOSFETs
Power Good and Fault Indications
OVP, OCP, and OTP
rectified, step-down converter with an I2C control
interface
and
a
multipage
one-time
programmable memory. It can achieve up to 3A
continuous output current with excellent load and
line regulation over a wide input supply range.
Internal Soft Start
The DIY8883 integrates internal high-side and
low-side power MOSFETs for high efficiency
without an external Schottky diode and is
available in a 16-pin QFN3x3 package. With
internal compensation and a feedback divider,
the DIY8883 can offer a very compact solution with
a minimal number of readily available, standard,
external components.
Programmable Address by Resistor
Programmability via I2C Interface
o Output Range from 0.6V to 12V
o Switching Frequency
o Compensation Network
o Slope Compensation
o EN Threshold
o Input UVLO Threshold
o PG Threshold
o AAM, CCM Selection
o Light-Load Mode Threshold
o SCP Mode Selection
o Current Limit Threshold
o OVP Mode Selection
o Input /Output OVP Threshold
o OTP Threshold
o Switching Slew Rate
The DIY8883 is designed to be very versatile.
The output voltage level can be adjusted from
0.6V to 12V on-the-fly through an I2C serial
interface. Voltage slew rate, switching
frequency, enable, and power savings mode are
also programmable via the I2C interface. This
allows users to optimize each output for their
particular requirements.
During
bench
evaluations,
different
configurations can be easily obtained through
the I2C interface instead of reworking external
components. Once the desired optimal setting
has been reached, a multipage, one-time
programmable memory is available, allowing the
settings to be stored permanently .
o Output Slew Rate (SS Time)
o Phase Shift
o Frequency Dithering for Low EMI
Operation
Multipage One-Time Programmable
Memory for Permanent Storage
Available in 16-pin QFN3x3 Package
Current-mode operation provides fast transient
response and eases loop stabilization. Full
protection features include under-voltage
lockout (UVLO), over-voltage protection (OVP),
over-current protection (OCP), and over-
temperature protection (OTP).
APPLICATIONS
Industrial Power Systems
Automotive Power Systems
Telecommunication Systems All MPS parts are lead-free and adhere to the
RoHS directive. For MPS green status, please visit MPS website under
Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
DIY8883 Rev. 1.0
3/4/2019
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
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