mp1541 MPS, mp1541 Datasheet

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mp1541

Manufacturer Part Number
mp1541
Description
1.3mhz Boost Converter
Manufacturer
MPS
Datasheet

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The Future of Analog IC Technology
DESCRIPTION
The MP1541 is a 5-pin thin SOT23 current
mode step up converter intended for small, low
power applications. The MP1541 switches at
1.3MHz and allows the use of tiny, low cost
capacitors and inductors 2mm or less in height.
Internal soft start results in small inrush current
and extends battery life. The MP1541 operates
from an input voltage as low as 2.5V and can
generate 12V at up to 200mA from a 5V supply.
The MP1541 includes under-voltage lockout,
current limiting, and thermal overload protection
to prevent damage in the event of an output
overload. The MP1541 is available in a small
5-pin TSOT23 package.
TYPICAL APPLICATION
MP1541 Rev.1.3
9/21/2007
OFF ON
V
5V
IN
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
4
2
EN
GND
IN
MP1541
5
SW
FB
1
3
D1
© 2007 MPS. All Rights Reserved.
www.MonolithicPower.com
MP1541-TAC01
V
12V
200mA
FEATURES
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
OUT
On Board Power MOSFET
Uses Tiny Capacitors and Inductors
1.3MHz Fixed Switching Frequency
Internally Compensated
Internal Soft-Start
Operates with Input Voltage as Low as 2.5V
and Output Voltage as High as 22V
12V at 200mA from 5V Input
UVLO, Thermal Shutdown
Internal Current Limit
Available in a TSOT23-5 Package
Camera Phone Flash
Handheld Computers and PDAs
Digital Still and Video Cameras
External Modems
Small LCD Displays
White LED Driver
1.3MHz Boost Converter
100
95
90
85
80
75
70
65
60
55
50
0
Efficiency vs Load Current
75
V
LOAD CURRENT (mA)
IN
= 3.3V
150 225 300 375 450
MP1541
V
V
IN
V
OUT
IN
= 5V
MP1541-TAC-EC01
= 4.2V
= 12V
1

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mp1541 Summary of contents

Page 1

... The Future of Analog IC Technology DESCRIPTION The MP1541 is a 5-pin thin SOT23 current mode step up converter intended for small, low power applications. The MP1541 switches at 1.3MHz and allows the use of tiny, low cost capacitors and inductors 2mm or less in height. Internal soft start results in small inrush current and extends battery life ...

Page 2

... MP1541-PD01-TSOT23 Part Number* Package TSOT23-5 MP1541DJ Marking: B3YW * For Tape & Reel, add suffix –Z (eg. MP1541DJ–Z) For Lead Free, add suffix –LF (eg. MP1541DJ–LF–Z) ELECTRICAL CHARACTERISTICS 5V +25°C unless otherwise specified Parameters Operating Input Voltage ...

Page 3

... TEMPERATURE (° Input Voltage 0.80 0.75 0.70 0.65 0.60 0.55 0. INPUT VOLTAGE (V) MP1541 Rev.1.3 9/21/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1541 – 1.3MHz BOOST CONVERTER 1.40 1.35 1.30 1.25 1.20 1.15 100 150 MP1541-TPC01 640 635 630 625 620 615 610 100 150 MP1541-TPC03 1.6 1.5 1.4 1.3 1.2 1.1 1 MP1541-TPC05 www.MonolithicPower.com © ...

Page 4

... This results in more current to flow through the power MOSFET, thus increasing the power delivered to the output. The MP1541 has internal soft start to limit the amount of input current at startup and to also limit the amount of overshoot on the output. The current limit is increased by a fourth every 40µs giving a total soft start time of 120µ ...

Page 5

... This diode is used for load currents less than by the 500mA. If the average current is more than 500mA the Microsemi UPS5817 is a good choice. ) − × the load LOAD www.MonolithicPower.com © 2007 MPS. All Rights Reserved. MP1541 – 1.3MHZ BOOST CONVERTER OUT × × ∆ ...

Page 6

... For the MP1541 it is recommended that a 47kΩ set by the P2 to 100kΩ resistor be placed in series with the FB pin and the resistor divider as seen in Figure 2. ...

Page 7

... OFF ON Figure 2— 5.5V OFF ON Figure 3—Typical Application Circuit for Driving Flashlight LEDs (20mA Torch Current, 100mA Flash Current) MP1541 Rev.1.3 9/21/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1541 – 1.3MHz BOOST CONVERTER D1 MBR0520L MP1541 3 ...

Page 8

... 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. MP1541Rev. 1.3 9/21/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1541 – 1.3MHz BOOST CONVERTER TSOT23-5 3 Gauge Plane SEATING PLANE ...

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