MP2187GQA-Z Datasheet, PDF (1/18 Pages) MPS Industries, Inc. – Dual 3A, 5.5V, 1.2MHz, COT Synchronous Step-Down Switcher

The Future of Analog IC Technology
DESCRIPTION
The MP2187 is a monolithic, step-down, switch-
mode dual converter with internal power
MOSFETs. It can achieve up to 3A continuous
output current from a 2.5V–to-5.5V input
voltage with excellent load and line regulation.
The output voltages of two channels are 1.1V
and 1.8V respectively.
The constant-on-time control scheme provides
fast transient response and eases loop
stabilization. Fault condition protections include
cycle-by-cycle current limiting, input voltage
failure indicator and thermal shutdown.
The MP2187 is available in small
2.2mmx2.6mm QFN16 package and requires
only a minimal number of readily available
standard external components.
The MP2187 is ideal for a wide range of
applications including high-performance DSPs,
FPGAs, smart phones, portable instruments,
and DVD drivers.
TYPICAL APPLICATION
MP2187
Dual 3A, 5.5V, 1.2MHz, COT
Synchronous Step-Down Switcher
FEATURES
• Wide 2.5V-to-5.5V Operating Input Range
• Fixed Output Voltages: 1.1V & 1.8V
• 100% Duty Cycle in Dropout
• Up to 3A Output Current
• Low IQ: 80µA
• 60mΩ and 30mΩ Internal Power MOSFET
Switches
• Input Voltage Failure Indicator
• Default 1.2MHz Switching Frequency
• EN and Power-Good for Power Sequencing
• Cycle-by-Cycle Over-Current Protection
• Auto Discharge at Power-Off
• Short-Circuit Protect with Hiccup Mode
• Stable with Low-ESR Output Ceramic
Capacitors
• Available in a 2.2mm x 2.6mm QFN16
Package
APPLICATIONS
• Low Voltage I/O System Power
• Handheld/Battery-powered Systems
• Wireless/Networking Cards
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.
Efficiency vs. I_OUT
V_IN=5V
100
90
80
70
60
V_OUT1=1.1V
50
V_OUT2=1.8V
40
30
20
10
0
0
0.1
1
10
I_OUT (A)
MP2187 Rev. 1.0
www.MonolithicPower.com
1
12/12/2014
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