Step-Down Switcher. MP2145GD Datasheet

MP2145GD Switcher. Datasheet pdf. Equivalent

MP2145GD Datasheet
Recommendation MP2145GD Datasheet
Part MP2145GD
Description Step-Down Switcher
Feature MP2145GD; The Future of Analog IC Technology MP2145 5.5V, 6A, 1.2MHz, High-Efficiency, 40μA IQ Constant On-Ti.
Manufacture MPS
Datasheet
Download MP2145GD Datasheet




MPS MP2145GD
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
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.



MPS MP2145GD
MP2145 – 5.5V, 6A, 1.2MHz, COT, BUCK SWITCHER
ELECTRICAL CHARACTERISTICS
VIN = 3.6V, TA = 25°C, unless otherwise noted.
Parameters
Symbol Condition
Supply Current (Quiescent)
IQ
VIN=3.6V, VEN=2V,
VFB = 0.65V
Shutdown Current
VEN = 0V
IN Under-Voltage Lockout
Threshold
IN Under-Voltage Lockout
Hysteresis
Regulated FB Voltage
VFB 2.8V<VIN<5.5V
FB Input Current
VFB = 0.65V
EN High Threshold
EN Low Threshold
EN Input Current
VEN = 2V
VEN = 0V
Internal Soft-Start Time (5)
τSS
High-Side Switch On-Resistance RDSON_P
Low-Side Switch On-Resistance RDSON_N
SW Leakage Current
High-Side Switch Current Limit
Low-Side Switch Current Limit (6)
Sourcing
Sinking,
Mode
PWM
Sinking, PFM Mode
Oscillator Frequency
Minimum On Time
τON_MIN
Minimum Off Time
τOFF_MIN
PG UV Threshold Rising
PGTH_Hi
PG UV Threshold Falling
PGTH_Lo
PG OV Threshold Rising
PGTH_Hi
PG OV Threshold Falling
PGTH_Lo
PG Delay
PGTD
PG Sink Current Capability
Sink 1mA
PG INTERNAL Pull Up Resistor
Thermal Shutdown Threshold (6)
Thermal Shutdown Hysteresis (6)
MODE Forced PWM Threshold
VIN=3.6V, VEN=2V
MODE PFM Threshold
VIN=3.6V, VEN=2V
Notes:
5) Guaranteed by characterization
6) Guaranteed by design.
Min
2.4
0.594
1.6
7.5
0.96
1.2
Typ
40
0.1
2.55
300
0.600
50
2
0
1.5
20
12
0
8.1
5
0
1.2
50
60
0.9
0.85
1.15
1.1
140
500
150
20
Max
60
1
2.7
0.606
0.4
1
1.44
0.4
0.4
Units
μA
μA
V
mV
V
nA
V
V
μA
ms
m
m
μA
A
A
MHz
ns
ns
VFB
VFB
VFB
VFB
μs
V
k
°C
°C
V
V
MP2145 Rev. 1.12
www.MonolithicPower.com
3
11/29/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.







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