MP28301 Datasheet | 700mA Step-Down Regulator & 100mA LDO





MP28301 PDF File (Datasheet) Download

Part Number MP28301
Description 700mA Step-Down Regulator & 100mA LDO
Manufacture MPS
Total Page 22 Pages
PDF Download Download MP28301 PDF File

Features: MP28301 Ultra-Low 500nA IQ, Wide Input 2 -5.5V, 700mA Step-Down Regulator Plus 3 00nAIQ, The Future of Analog IC Technol ogy 2-5.5V Input, 100mA LDO in a 2x2mm QFN DESCRIPTION The MP28301 is a monol ithic powermanagement unit containing a 700mA, highefficiency, step-down, swit ching converter and a 100mA LDO regulat or. The nA quiescent current provides e xtremely high efficiency when the load current is in the µA range. With the m inimum input voltage as low as 2V, the MP28301 allows the system to operate di rectly from the battery. The constant-o n-time (COT) control scheme provides fa st transient response, high light-load efficiency, and requires minimal capaci tance. The regulation is made tight by integrating an error amplifier to corre ct the output voltage. A 100mA LDO regu lator provides easy system configuratio n with a clean output voltage. The CTRL pins control the on/off and output vol tage selection functions. Fault protect ion features include under-voltage lockout (UVLO), over-current .

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MP28301
Ultra-Low 500nA IQ, Wide Input 2-5.5V,
700mA Step-Down Regulator Plus 300nAIQ,
The Future of Analog IC Technology 2-5.5V Input, 100mA LDO in a 2x2mm QFN
DESCRIPTION
The MP28301 is a monolithic power-
management unit containing a 700mA, high-
efficiency, step-down, switching converter and a
100mA LDO regulator. The nA quiescent
current provides extremely high efficiency when
the load current is in the µA range. With the
minimum input voltage as low as 2V, the
MP28301 allows the system to operate directly
from the battery.
The constant-on-time (COT) control scheme
provides fast transient response, high light-load
efficiency, and requires minimal capacitance.
The regulation is made tight by integrating an
error amplifier to correct the output voltage.
A 100mA LDO regulator provides easy system
configuration with a clean output voltage.
The CTRL pins control the on/off and output
voltage selection functions.
Fault protection features include under-voltage
lockout (UVLO), over-current protection (OCP),
and thermal shutdown.
The MP28301 requires a minimal number of
readily available, standard, external
components and is available in a small QFN-12
(2mmx2mm) package.
FEATURES
700mA Buck Switcher
o Ultra-Low IQ: 500nA
o Wide 2.0V to 5.5V Operating Input
Range
o Seven Selectable Output Voltages
o Up to 700mA Output Current
o 1.5MHz Switching Frequency in
Continuous Conduction Mode (CCM)
o 100% Duty Cycle in Dropout
o 0.25and 0.25Internal Power
MOSFET Switches
o Cycle-by-Cycle Over-Current Protection
(OCP)
o Short-Circuit Protection (SCP) with
Hiccup Mode
100mA LDO
o Ultra-Low IQ: 300nA
o 2.0V to 5.5V Operating Input Range
o Three Selectable Output Voltages
o Over-Temperature Protection (OTP)
Available in a QFN-12 (2mmx2mm)Package
APPLICATIONS
Wearables
IoT Devices
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
Efficiency vs. Load Current
VOUT=1.8V
100
90
80
70
60
50
40
30
0.001
VIN=2V
VIN=2.5V
VIN=3.0V
VIN=3.6V
VIN=4.2V
VIN=5.0V
0.1 10
IOUT (mA)
1000
MP28301 Rev. 1.1
www.MonolithicPower.com
6/12/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
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