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MP2318 Datasheet Preview

MP2318 Datasheet

Synchronous Step-Down Converter

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MP2318
High Efficiency 2A, 24V, 2MHz
Synchronous Step-Down Converter
DESCRIPTION
The MP2318 is a high frequency synchronous
rectified step-down switch mode converter with
built-in internal power MOSFETs. It offers a
very compact solution to achieve 2A continuous
output current over a wide input supply range
with excellent load and line regulation.
Current mode operation provides fast transient
response and eases loop stabilization.
Full protection features include OCP and
thermal shut down.
The MP2318 requires a minimum number of
readily available standard external components
and is available in a space saving 8-pin
TSOT23 package.
FEATURES
Wide 4.5V to 24V Operating Input Range
2A Load Current
90mΩ/40mΩ Low Rds(on) Internal Power
MOSFETs
Low Quiescent Current
High Efficiency Synchronous Mode
Operation
Fixed 2MHz Switching Frequency
AAM Power Save Mode
Internal Soft Start
OCP Protection and Hiccup
Thermal Shutdown
Output Adjustable from 0.8V
Available in an 8-pin TSOT-23 package
APPLICATIONS
Notebook Systems and I/O Power
Digital Set Top Boxes
Flat Panel Television and Monitors
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
4. 5V- 24V
VIN
C1
22 µF
EN/
C4
0. 1µF
R3
40.2k
IN BST
MP2318
SW
EN
VCC
AAM
GND
4
FB
R5
20
C5
0.1µF
L1
1uH
R1
20k
R2
6.34k
VOUT
3.3 V/2A
C2
22µF
MP2318 Rev. 1.0
3/2/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
1




MPS

MP2318 Datasheet Preview

MP2318 Datasheet

Synchronous Step-Down Converter

No Preview Available !

MP2318 – 24V, 2A SYNC STEP-DOWN CONVERTER
ORDERING INFORMATION
Part Number*
MP2318GJ
Package
TSOT23-8
Top Marking
AHG
* For Tape & Reel, add suffix –Z (e.g. MP2318GJ-Z);
PACKAGE REFERENCE
TSOT23-8
ABSOLUTE MAXIMUM RATINGS (1)
VIN............................................... –0.3V to +28V
VSW .......–0.3V (-5V<10ns) to +28V (30V <10ns)
VBST ...................................................... VSW+6V
All Other Pins (2) ............................ -0.3V to +6V
Continuous Power Dissipation (TA=+25°C) (3)...
................................................................1.25W
Junction Temperature.............................. 150°C
Lead Temperature ................................... 260°C
Storage Temperature................. -65°C to 150°C
Recommended Operating Conditions (4)
Supply Voltage VIN .............................4.5 to 24V
Output Voltage VOUT............... 0.8V to VIN*Dmax
Operating Junction Temp (TJ). . -40°C to +125°C
Thermal Resistance (5) θJA θJC
TSOT23-8…………………...…….100…..55..°C/W
Notes:
1) Exceeding these ratings may damage the device.
2) About the details of EN pin’s ABS MAX rating, please refer to
Page 10, EN control section.
3) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-to-
ambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
4) The device is not guaranteed to function outside of its
operating conditions.
5) Measured on JESD51-7, 4-layer PCB.
MP2318 Rev. 1.0
3/2/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
2


Part Number MP2318
Description Synchronous Step-Down Converter
Maker MPS
Total Page 18 Pages
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