MP2223 Datasheet: Synchronous Step-Down Converter





MP2223 Synchronous Step-Down Converter Datasheet

Part Number MP2223
Description Synchronous Step-Down Converter
Manufacture MPS
Total Page 21 Pages
PDF Download Download MP2223 Datasheet PDF

Features: MP2223 18V, Dual-Channel 3A/2A, 540kHz, Synchronous, Step-Down Converter in 8-P in TSOT23 Package DESCRIPTION The MP22 23 is a dual-channel, synchronous, rect ified, step-down, switch-mode converter with built-in, internal power MOSFETs. The MP2223 offers a very compact solut ion that achieves 3A/2A of continuous o utput current over a wide input supply range. Two channels operate 180° out-o f-phase to minimize the input capacitor and alleviate EMI. Current-mode operat ion provides fast transient response an d eases loop stabilization. Full protec tion features include hiccup mode overc urrent protection (OCP) and thermal shu tdown. Other features include power-sav e mode (PSM) at light load and a separa te enable control (EN) for power-sequen ce control. The MP2223 requires a minim al number of readily available, standar d, external components and is available in a space saving 8-pin TSOT23 package . FEATURES  Wide 4.5V to 18V Operat ing Input Range  70mΩ/50mΩ for Ch1, 100mΩ/60mΩ for Ch2, Low RDS(O.

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MP2223
18V, Dual-Channel 3A/2A, 540kHz,
Synchronous, Step-Down Converter
in 8-Pin TSOT23 Package
DESCRIPTION
The MP2223 is a dual-channel, synchronous,
rectified, step-down, switch-mode converter
with built-in, internal power MOSFETs. The
MP2223 offers a very compact solution that
achieves 3A/2A of continuous output current
over a wide input supply range.
Two channels operate 180° out-of-phase to
minimize the input capacitor and alleviate EMI.
Current-mode operation provides fast transient
response and eases loop stabilization. Full
protection features include hiccup mode over-
current protection (OCP) and thermal shutdown.
Other features include power-save mode (PSM)
at light load and a separate enable control (EN)
for power-sequence control.
The MP2223 requires a minimal number of
readily available, standard, external
components and is available in a space saving
8-pin TSOT23 package.
FEATURES
Wide 4.5V to 18V Operating Input Range
70mΩ/50mΩ for Ch1, 100mΩ/60mΩ for
Ch2, Low RDS(ON) Internal Power MOSFETs
Up to 3A (Ch1) and 2A (Ch2) Maximum
Continuous Output Current
180°Out-of-Phase Operation
Power-Save Mode for Light Load
540kHz Fixed Switching Frequency
Over-Current Protection (OCP) and Hiccup
Over-Voltage Protection (OVP )
Thermal Shutdown
Both Channel Outputs Adjustable from 0.8V
Available in a TSOT23-8 Package
APPLICATIONS
Notebook Systems and I/O Power
Digital Set-Top Boxes
DSL Modems
Flat-Panel Televisions and Monitors
Distributed Power Systems
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
VIN
12V
CIN
10µF×2
EN1
VOUT1
1.8V
COUT1
22µF×2
L1
3.3µH
R1
21kΩ
R2
16.9kΩ
R5
20kΩ
IN
EN1 EN2
SW1 SW2
MP2223
FB1 FB2
GND
L2
1.5µH
R3
21kΩ
EN2
VOUT2
1.2V
COUT2
22µF
R6
100kΩ
R4
42.2kΩ
MP2223 Rev 1.0
7/13/2018
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
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