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PDF MP2209 Data sheet ( Hoja de datos )
| Número de pieza | MP2209 | |
| Descripción | 600kHz Synchronous Step-Down Converter | |
| Fabricantes | MPS | |
| Logotipo |  |
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The Future of Analog IC Technology
DESCRIPTION
The MP2209 is an internally compensated
600kHz fixed frequency PWM synchronous
step-down regulator. With a 3V to 6V bias
supply, MP2209 operates from a 3V to 16V
input and generates an adjustable output
voltage from 0.8V to 0.9xVIN at up to 2A load
current.
The MP2209 integrates a 80mΩ high-side
switch and a 80mΩ synchronous rectifier for
high efficiency without an external Schottky
diode. With peak current mode control and
internal compensation, it can be stabilized with
ceramic capacitors and small inductors. Fault
condition protection includes short-circuit
protection, cycle-by-cycle current limiting and
thermal shutdown.
The MP2209 is available in small 3mmx4mm
14-lead QFN packages.
MP2209
16V, 2A, 600kHz Synchronous
Step-Down Converter
FEATURES
• 2A Output Current
• Input Supply Range: 3V to 16V
• 80mΩ Internal Power MOSFET Switches
• Stable with Ceramic Output Capacitors
• High Efficiency
• 600kHz Fixed Switching Frequency
• Adjustable Output from 0.8V to 0.9xVIN
• Frequency Synchronization
• Power Good Pin
• Thermal Shutdown
• Cycle-by-Cycle Current Limiting
• Short Circuit Protection
• 3mmx4mm 14-lead QFN Package
APPLICATIONS
• µP/ASIC/DSP/FPGA Core and I/O Supplies
• Printers and LCD TVs
• Network and Telecom Equipment
• Point of Load Regulators
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VIN
3V to 16V
VCC
3V to 6V
5, 10
7
IN BS
8 VCC
SW
MP2209
13 EN/SYNC
9 POK
FB
4, 11
14
SS
2
C6
10nF
AGND/PGND
1, 3, 12
VOUT
1.8V / 2A
Efficiency vs.
Load Current
100
95
90
85
80
75
0
0.5 1.0 1.5
LOAD CURRENT (A)
2.0
MP2209 Rev. 1.01
www.MonolithicPower.com
7/11/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
1
Free Datasheet http://www.datasheet4u.com/
1 page  
MP2209 – 16V, 2A, 600KHz SYNCHRONOUS STEP-DOWN CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS
VCC = 5V, VOUT = 1.8V, TA = +25ºC, unless otherwise noted.
Switching Waveform
VIN=5V,IO=0A
Switching Waveform
VIN=12V,IO=0A
VO/AC
10mV/div.
VO/AC
10mV/div.
VSW
2V/div.
IL
500mA/div.
VSW
5V/div.
500mA/div.
Enable Start-up
VIN=12V,IO=0A
VEN
5V/div.
VO
1V/div.
VSW
10V/div.
IL
2A/div.
Enable Start-up
VIN=12V,IO=2A
VEN
5V/div.
VO
1V/div.
VSW
10V/div.
IL
2A/div.
Enable Shut-down
VIN=12V,IO=0A
VEN
5V/div.
VO
1V/div.
VSW
10V/div.
IL
1A/div.
400ms/div.
Enable Shut-down
VIN=12V,IO=2A
VEN
5V/div.
VO
1V/div.
VSW
10V/div.
IL
2A/div.
MP2209 Rev. 1.01
www.MonolithicPower.com
7/11/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
5
Free Datasheet http://www.datasheet4u.com/
5 Page 
MP2209 – 16V, 2A, 600KHz SYNCHRONOUS STEP-DOWN CONVERTER
Output Capacitor Selection
The output capacitor keeps output voltage ripple
small and ensures regulation loop stable. The
output capacitor impedance shall be low at the
switching frequency. Ceramic capacitors with
X5R or X7R dielectrics are recommended. If
electrolytic capacitor is used, pay attention to
output ripple voltage, extra heating, and the
selection of feedback resistor R1 (refer to “Output
Voltage Setting” section) due to large ESR of
electrolytic capacitor.
PCB Layout Guide
PCB layout is very important to achieve stable
operation. It is highly recommended to duplicate
EVB layout for optimum performance. If change
is necessary, please follow the guidelines as
follows. Here, the typical application circuit is
taken as an example to illustrate the layout rules
should be followed.
1) For MP2209, a PCB layout with >=4 layers is
recommended.
2) The high current paths (GND, IN and SW)
should be placed very close to the device with
short, direct and wide traces.
3) Two input ceramic capacitors (2 x
(10μF~22μF)) are strongly recommended to be
placed on both sides of the MP2209DL package
and keep them as close as possible to the “IN”
and “GND” pins.
4) A RC (see the typical application circuit,
R4=10Ω, C4=1μF ceramic capacitor) low pass
filter is recommended for VCC supply. C4 must
be placed as close as possible to “VCC” pin and
“GND” pin.
5) The external feedback resistors shall be
placed next to the FB pin. Keep the FB trace as
short as possible.
6) Keep the switching node SW short and away
from the feedback network.
Top layer
Inner layer-2
Inner layer-1
Bottom layer
Figure 2―PCB Layout (Four Layers)
MP2209 Rev. 1.01
www.MonolithicPower.com
7/11/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MP2209.PDF ] | |
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