mp2359dt MPS, mp2359dt Datasheet

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mp2359dt

Manufacturer Part Number
mp2359dt
Description
1.2a, 24v, 1.4mhz Step-down Converter In A Tsot23-6
Manufacturer
MPS
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
mp2359dt-LF-Z
Manufacturer:
MPS
Quantity:
7 600
Part Number:
mp2359dt-LF-Z
Manufacturer:
MPS/美国芯源
Quantity:
20 000
The Future of Analog IC Technology
DESCRIPTION
The MP2359 is a monolithic step-down switch
mode converter with a built-in power MOSFET.
It achieves 1.2A peak output current over a
wide input supply range with excellent load and
line
provides fast transient response and eases loop
stabilization. Fault condition protection includes
cycle-by-cycle
shutdown.
The MP2359 requires a minimum number of
readily available standard external components.
The MP2359 is available in TSOT23-6 and
SOT23-6 packages.
EVALUATION BOARD REFERENCE
TYPICAL APPLICATION
MP2359 Rev. 1.2
5/26/2008
OFF ON
V
12V
Board Number
EV2359DJ-00B
IN
regulation.
5
4
current
IN
EN
Current
MP2359
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
GND
2
limiting
2.1”X x 1.9”Y x 0.4”Z
BST
SW
FB
mode
Dimensions
1
6
3
and
B230A
CB
10nF
D1
operation
© 2008 MPS. All Rights Reserved.
thermal
www.MonolithicPower.com
Step-Down Converter in a TSOT23-6
FEATURES
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
V
3.3V @ 1.2A
1.2A Peak Output Current
0.35Ω Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
Up to 92% Efficiency
0.1µA Shutdown Mode
Fixed 1.4MHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Wide 4.5V to 24V Operating Input Range
Output Adjustable from 0.81V to 15V
Available
Packages
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
WLED Drivers
OUT
in
100
90
80
70
60
50
40
30
20
10
0
0.01
TSOT23-6
Efficiency vs
Load Currents
V
IN
1.2A, 24V, 1.4MHz
= 12V
LOAD CURRENT (A)
0.1
V
IN
MP2359
= 24V
and
1
V
OUT
SOT23-6
= 5V
10
1

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mp2359dt Summary of contents

Page 1

... Available Packages APPLICATIONS Dimensions • Distributed Power Systems • Battery Charger • Pre-Regulator for Linear Regulators • WLED Drivers “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc 10nF 6 V OUT 3.3V @ 1.2A D1 B230A 3 www.MonolithicPower.com © ...

Page 2

... BST 1 6 GND Part Number* Package MP2359DJ TSOT23-6 MP2359DT SOT23-6 * For Tape & Reel, add suffix –Z (eg. MP2359DJ–Z) For RoHS compliant packaging, add suffix –LF (eg. MP2359DJ–LF–Z) ELECTRICAL CHARACTERISTICS V = 12V +25°C, unless otherwise noted Parameters ...

Page 3

... Feedback Voltage vs Die Temperature 0.820 0.818 0.816 0.814 0.812 0.810 0.808 0.806 0.804 0.802 0.800 -50 - DIE TEMPERATURE ( MP2359 Rev. 1.2 5/26/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. = +25ºC, unless otherwise noted. A 100 24V 2.5V OUT 0 0.01 ...

Page 4

... Start-up through Enable Resistive Load OUT V EN 5V/div. V OUT 1V/div 10V/div 1A/div. MP2359 Rev. 1.2 5/26/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. = +25ºC, unless otherwise noted OUT AC Coupled 50mV/div 1A/div. I LOAD 1A/div. Short Circuit Recovery V OUT 1V/div 1A/div ...

Page 5

... GND 2 MP2359 Rev. 1.2 5/26/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. If the sum of the Current Sense Amplifier output and the Slope Compensation signal does not exceed the EA output for a whole cycle, then the falling edge of the CLK resets the Flip-Flop. ...

Page 6

... Also note that the maximum recommended load current the duty cycle exceeds 35%. MP2359 Rev. 1.2 5/26/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. Selecting the Input Capacitor The input capacitor reduces the surge current drawn from the input supply and the switching noise from the device ...

Page 7

... Toko A921CY-4R7M Sumida CDRH4D28C/LD Wurth Electronics 7440530047 MP2359 Rev. 1.2 5/26/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. External Bootstrap Diode An external bootstrap diode may enhance the efficiency of the regulator, the applicable conditions of external BST diode are: V =5V or 3.3V; and OUT Duty cycle is high: D= ...

Page 8

... D2 can be installed if V < 5V OUT 3) No need for both D2 and D3 Figure 4—1.4MHz, 3.3V Output at 1A Step-Down Converter V IN 6V-12V OFF ON Figure 5—White LED Driver Application MP2359 Rev. 1.2 5/26/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited MP2359 B230A-13-F ...

Page 9

... TOP VIEW 0.84 0.90 0.30 0.95 BSC 0.50 FRONT VIEW GAUGE PLANE 0.25 BSC 0. 0.50 DETAIL “A” MP2359 Rev. 1.2 5/26/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. TSOT23-6 0.60 TYP 4 1.20 TYP 1.50 2.60 1.70 3.00 3 RECOMMENDED LAND PATTERN 1.00 MAX SEATING PLANE 0.00 SEE DETAIL "A" 0.10 NOTE: 1) ALL DIMENSIONS ARE IN MILLIMETERS. ...

Page 10

... NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. ...

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