MP28119 Datasheet: Synchronous Step-Down Converter





MP28119 Synchronous Step-Down Converter Datasheet

Part Number MP28119
Description Synchronous Step-Down Converter
Manufacture MPS
Total Page 12 Pages
PDF Download Download MP28119 Datasheet PDF

Features: The Future of Analog IC Technology DESCR IPTION The MP28119 is a 1.7MHz constant frequency, current mode, ultra-small P WM step-down converter. The device inte grates a main switch and a synchronous rectifier for high efficiency and elimi nates the needs for an external schottk y diode. It is ideal for powering porta ble equipment that runs from a single c ell LithiumIon (Li+) battery. The MP281 19 can supply 600mA of load current fro m a 2.5V to 6V input voltage. The outpu t voltages of the MP28119EG-1.0 and MP2 8119EG-1.2 are fixed at 1.0V and 1.2V r espectively. The MP28119 can also run a t 100% duty cycle for low dropout appli cations. The MP28119 has an output disc harge function that controls the discha rging of the output capacitor. The MP28 119 is available in an ultra-small 2x2 QFN package. TYPICAL APPLICATION OFF ON 7 IN 1 SW MP28119EG-1.0 4 EN 5 OUT GND 6,8 MP28119 Ultra-small 1.7MH z, 600mA, Low-Voltage Synchronous Step- Down Converter FEATURES  High Efficiency: Up to 89%  1.7MHz C.

Keywords: MP28119, datasheet, pdf, MPS, Synchronous, Step-Down, Converter, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute, Equivalent

The Future of Analog IC Technology
DESCRIPTION
The MP28119 is a 1.7MHz constant frequency,
current mode, ultra-small PWM step-down
converter. The device integrates a main switch
and a synchronous rectifier for high efficiency
and eliminates the needs for an external
schottky diode. It is ideal for powering portable
equipment that runs from a single cell Lithium-
Ion (Li+) battery. The MP28119 can supply
600mA of load current from a 2.5V to 6V input
voltage.
The output voltages of the MP28119EG-1.0 and
MP28119EG-1.2 are fixed at 1.0V and 1.2V
respectively.
The MP28119 can also run at 100% duty cycle
for low dropout applications.
The MP28119 has an output discharge function
that controls the discharging of the output
capacitor.
The MP28119 is available in an ultra-small 2x2
QFN package.
TYPICAL APPLICATION
OFF ON
7
IN
1
SW
MP28119EG-1.0
4
EN
5
OUT
GND
6,8
MP28119
Ultra-small
1.7MHz, 600mA, Low-Voltage
Synchronous Step-Down Converter
FEATURES
High Efficiency: Up to 89%
1.7MHz Constant Switching Frequency
600mA Available Load Current
2.5V to 6V Input Voltage Range
100% Duty Cycle in Dropout
Current Mode Control
Short Circuit Protection
Thermal Fault Protection
Output Discharge Function
<0.1μA Shutdown Current
1.0V and 1.2V Fixed Out-put Versions
Ultra-Small 2x2 QFN Package
APPLICATIONS
Cellular and Smart Phones
Microprocessors and DSP Core Supplies
PDAs
MP3 Players
Digital Still and Video Cameras
Portable Instruments
For MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
OUTPUT
Efficiency vs. Load Current
VOUT=1V, L=2.2uH
100
90 Vin=3.3V
80
70
60
50 Vin=5V
40
30
20
10
0
10 100 1000
LOAD CURRENT(mA)
MP28119 Rev.0.91
www.MonolithicPower.com
11/23/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
1

                    
              






Index : 0  1  2  3   4  5  6  7   8  9  A  B   C  D  E  F   G  H  I  J   K  L  M  N   O  P  Q  R   S  T  U  V   W  X  Y  Z
@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)