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MP2145GD Datasheet Preview

MP2145GD Datasheet

Step-Down Switcher

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The Future of Analog IC Technology
MP2145
5.5V, 6A, 1.2MHz, High-Efficiency, 40μA IQ
Constant On-Time
Synchronous, Step-Down Switcher
DESCRIPTION
The MP2145 is a monolithic, step-down, switch-
mode converter with internal power MOSFETs. It
can achieve up to 6A continuous output current
from a 2.8V-to-5.5V input voltage with excellent
load and line regulation. The output voltage can
be regulated to as low as 0.6V.
Constant-on-time control provides a fast transient
response and eases loop stabilization. Fault
condition protections include cycle-by-cycle
current limiting and thermal shutdown.
The MP2145 is available in a small QFN2×3mm
package and requires only a minimal number of
readily-available, standard, external components.
The MP2145 is ideal for a wide range of
applications, including storage (SSD, HDD), high-
performance DSPs, FPGAs, and distributed
power systems.
FEATURES
Up to 6A Output Current
Wide 2.8V-to-5.5V Operating Input Range
20mand 12mInternal Power MOSFETs
40µA Quiescent Current
1.2MHz Fixed Switching Frequency
100% Duty Cycle in Dropout
1% Feedback Accuracy
External Mode Control
External VCON Control
Adjustable Output from 0.6V
1.5ms Internal SS Time with Pre-Bias Startup
Cycle-by-Cycle Over Current Protection
Short Circuit Protection with Hiccup Mode
Stable with Low-ESR Output Ceramic
Capacitors
Thermal Shutdown
Available in a 2mm×3mm QFN Package
Output Discharge Function
APPLICATIONS
Storage (SSD, HDD)
Portable Instruments
Battery-Powered Devices
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
2.8V to 5.5V
C1
22uF
EN
PG
MODE/
VCON
VIN
SW
OUT
MP2145
EN
FB
PG
MODE /
Ramp
VCON
GND
L1
0. 47uH
R1
200k
R2
200k
Ramp
VOUT
1.2V/6A
C2 C3
22uF 22uF
MP2145 Rev. 1.12
www.MonolithicPower.com
1
11/29/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.




MPS

MP2145GD Datasheet Preview

MP2145GD Datasheet

Step-Down Switcher

No Preview Available !

MP2145 – 5.5V, 6A, 1.2MHz, COT, BUCK SWITCHER
ORDERING INFORMATION
Part Number*
MP2145GD
Package
QFN-12 (2mmx3mm)
Top Marking
AFV
* For Tape & Reel, add suffix –Z (e.g. MP2145GD–Z);
PACKAGE REFERENCE
TOP VIEW
QFN-12 (2mm×3mm)
ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage VIN .......................................... 6V
VSW .......................................................................
……..–0.3V (-3V for <10ns) to 6V (8V for <10ns)
All Other Pins ................................ –0.3V to +6 V
Junction Temperature ............................... 150°C
Lead Temperature .................................... 260°C
Continuous Power Dissipation (TA = +25°C)(2)
................................................................... 1.78W
Recommended Operating Conditions (3)
Supply Voltage VIN .......................... 2.8V to 5.5V
Output Voltage VOUT........................ 0.6V to 5.5V
Operating Junction Temp. ........-40°C to +125°C
Thermal Resistance (4) θJA θJC
QFN-12 (2mmx3mm)..………………70 15 °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-to-
ambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MP2145 Rev. 1.12
www.MonolithicPower.com
2
11/29/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.


Part Number MP2145GD
Description Step-Down Switcher
Maker MPS
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