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PDF MP3428A Data sheet ( Hoja de datos )
| Número de pieza | MP3428A | |
| Descripción | Synchronous Boost Converter | |
| Fabricantes | MPS | |
| Logotipo |  |
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The Future of Analog IC Technology
DESCRIPTION
The MP3428A is a 600kHz, fixed frequency,
high-efficiency, wide input range, current-mode
boost converter with optional input disconnect
and an input average current limit function. The
input disconnect feature provides additional
protection by isolating the input from the output
during output short or shutdown. For battery-
operated applications, this feature also helps in
preventing battery depletion. With a
programmable input average current limit, the
MP3428A supports a wide range of
applications, including POS, Thunderbolt,
Bluetooth Audio, Power Banks, and Fuel Cells.
The MP3428A features a 10mΩ, 24V power
switch and a synchronous gate driver for high
efficiency. An external compensation pin allows
flexibility in setting loop dynamics and obtaining
optimal transient performance at all conditions.
The MP3428A includes under-voltage lockout,
switching current limiting, and thermal
shutdown to prevent damage in the event of an
output overload.
The MP3428A is available in a low-profile
QFN-22 (3mm x 4mm) package.
MP3428A
19A, 600kHz, 20V Wide Input Range,
Synchronous Boost Converter
with Input Disconnect Function
FEATURES
3V to 20V Wide Input Range
Integrated 10mΩ Low-Side Power FET
SDR Driver for Synchronous Solution
19A Internal Switch Current Limit or
External Programmable Input Current
Limit
Input Disconnect and Output SCP
External Soft Start and Compensation for
Higher Flexibility
Programmable UVLO and Hysteresis
< 1µA Shutdown Current
Thermal Shutdown at 150°C
Available in QFN-22 (3mm x 4mm)
Package
APPLICATIONS
Thunderbolt Interface
Notebooks and Tablets
Bluetooth Audio
Power Banks
Fuel Cells
POS Systems
Other Electronic Accessories
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
MP3428A Rev. 1.0
www.MonolithicPower.com
5/20/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
1
1 page  
MP3428A – 19A, 600KHZ, 20V SYNCHRONOUS BOOST CONVERTER WITH INPUT DISCONNECT FUNCTION
ELECTRICAL CHARACTERISTICS (continued)
VIN = VEN = 3.3V, TJ = -40°C 125°C, typical value is tested at 25℃, unless otherwise noted.
Parameter
Symbol Condition
Min Typ
Max
SW current limit
External sense average current
limit
ILIMT
VCLDR = GND,
duty cycle = 40%
VCL CLDR float
19 25 29
45 54
63
Linear charge start-up SCP
blanking time
TCL CLDR float
0.5
Thermal shutdown(6)
TSD
150
Thermal shutdown hysteresis(6)
TSD-HYS
25
NOTES:
6) Guaranteed by characterization, not tested in production.
7) Guaranteed by design.
Units
A
mV
ms
°C
°C
MP3428A Rev. 1.0
www.MonolithicPower.com
5/20/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
5
5 Page 
MP3428A – 19A, 600KHZ, 20V SYNCHRONOUS BOOST CONVERTER WITH INPUT DISCONNECT FUNCTION
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 3.3V, VOUT = 12V, L = 1.5µH, IOUT = 2A, COUT = 22µF*3, RSENSE = 4.5mΩ, add input disconnect
and output SCP MOSFET, TA = 25°C, unless otherwise noted.
MP3428A Rev. 1.0
www.MonolithicPower.com
5/20/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet MP3428A.PDF ] | |
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