MP28300 Datasheet: 300mA Step-Down Regulator & 100mA LDO





MP28300 300mA Step-Down Regulator & 100mA LDO Datasheet

Part Number MP28300
Description 300mA Step-Down Regulator & 100mA LDO
Manufacture MPS
Total Page 20 Pages
PDF Download Download MP28300 Datasheet PDF

Features: MP28300 Ultra-Low 500nA Iq, Wide Input 2V-5.5V, 300mA Step-Down Regulator Plu s300nA Iq, The Future of Analog IC Tec hnology 2V-5.5V Input, 100mA LDO in 2x 2 QFN DESCRIPTION The MP28300 is a mon olithic powermanagement unit containing 300mA, highefficiency, step-down, swit ching converters and a 100mA LDO regula tor. The nanoamp quiescent current prov ides extremely high efficiency when the load current is down in the µA range. With minimum input voltage as low as 2 V, the MP28300 allows the system to ope rate directly from the battery. The con stant-on-time control scheme provides f ast transient response, high light-load efficiency, and requires minimal capac itance. The regulation can be made tigh t by integrating an error amplifier to correct the output voltage. An 100mA LD O regulator provides easy system config uration with clean output voltage. The CTRL pins control the on/off and output voltage selection functions. Fault pro tection features include under-voltage lockout (UVLO), over-curr.

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MP28300
Ultra-Low 500nA Iq, Wide Input 2V-5.5V,
300mA Step-Down Regulator Plus300nA Iq,
The Future of Analog IC Technology
2V-5.5V Input, 100mA LDO in 2x2 QFN
DESCRIPTION
The MP28300 is a monolithic power-
management unit containing 300mA, high-
efficiency, step-down, switching converters and
a 100mA LDO regulator. The nanoamp
quiescent current provides extremely high
efficiency when the load current is down in the
µA range. With minimum input voltage as low
as 2V, the MP28300 allows the system to
operate directly from the battery.
The constant-on-time control scheme provides
fast transient response, high light-load
efficiency, and requires minimal capacitance.
The regulation can be made tight by integrating
an error amplifier to correct the output voltage.
An 100mA LDO regulator provides easy system
configuration with 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 MP28300 requires a minimal number of
readily available, standard, external
components and is available in a small QFN-12
(2mmx2mm) package.
TYPICAL APPLICATION
FEATURES
300mA Buck Switcher
o Ultra-Low Iq: 500nA
o Wide 2.0V to 5.5V Operating Input
Range
o 7 Selectable Output Voltages
o Up to 300mA 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 3 Selectable Output Voltages
o Over-Temperature Protection (OTP)
Available in a QFN-12 (2mmx2mm)
Package
APPLICATIONS
Wearables
IOT
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.
Efficiency vs.Load Current
100 VOUT=1.8V
90
80
70 VIN=2V
VIN=2.5V
60 VIN=3.0V
50
VIN=3.6V
VIN=4.2V
40 VIN=5.0V
30
0.001 0.01 0.1 1 10
IOUT (mA)
100 1000
MP28300 Rev.1.1
6/12/2019
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
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