MP8869S
18V, 12A, High-Efficiency, Wide-Input,
Synchronous, Step-Down Converter with
Integrated Telemetry via I2C Interface
DESCRIPTION
FEATURES
The
MP8869S
is
a
high-frequency,
Vout Adjustable up to 5.5V using FB pin
Wide 2.85V to 18V Operating Input Range
12A Continuous/15A Peak Output Current
1% Internal Reference Accuracy
I2C-Programmable Reference Range from
0.6V to 1.108V in 4mV Steps with Slew
Rate Control
synchronous, rectified, step-down, switch-mode
converter with an I2C control interface. The
MP8869S offers a fully integrated solution that
achieves 12A of continuous current and 15A of
peak output current with excellent load and line
regulation over a wide input supply range.
5% Accuracy Output Voltage and Output
The output voltage level can be controlled on-
the-fly through an I2C serial interface. The
reference voltage range can be adjusted from
0.6V to 1.108V in 4mV steps. The voltage slew
rate, frequency, current limit, hiccup/latch-off
protection, enable, and power-saving mode are
also selectable through the I2C interface.
Current Monitoring via I2C
Selectable PFM/PWM Mode, Adjustable
Frequency and Current Limit through I2C
Four Different Selectable I2C Addresses
External Soft Start (SS)
Open-Drain Power Good (PG) Indication
Output Over-Voltage Protection (OVP)
Hiccup/Latch-Off Over-Current Protection
(OCP)
Constant-on-time (COT) control operation
provides fast transient response. An open-drain
power good (PG) pin indicates when the output
voltage is in the nominal range. Full protection
features include over-voltage protection (OVP),
over-current protection (OCP), and thermal
shutdown.
Available in a QFN-14 (3mmx4mm)
Package
APPLICATIONS
Solid-State Drives (SSD)
Flat-Panel Televisions and Monitors
Digital Set-Top Boxes
Distributed Power Systems
Networking/Servers
The MP8869S is available in a QFN-14
(3mmx4mm) package.
All MPS parts are lead-free, halogen-free, and adhere to the RoHS
directive. For MPS green status, please visit the MPS website under Quality
Assurance. “MPS” and “The Future of Analog IC Technology” are registered
trademarks of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
R2
R1
205kΩ 80.6kΩ
AGND
VCC
FB
C5
470nF
VOUT
A0
SDA
I2C Bus
MP8869S
{
SCL
SS
PG
EN
PG
EN
C3
C6
22nF
BST
100nF
2.85V-18V
VIN
L1
1.5µH
VIN
VO
C1
22µFx2
SW
1V/12A
PGND
C2
22µFx4
MP8869S Rev. 1.03
1/18/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
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