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LMR10520 データシート(PDF) 1 Page - Texas Instruments

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部品番号 LMR10520
部品情報  SIMPLE SWITCHER 5.5Vin, 2.0A Step-Down Voltage Regulator in WSON
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

LMR10520 データシート(HTML) 1 Page - Texas Instruments

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0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
40
50
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LOAD CURRENT (A)
1.8Vout
3.3Vout
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
40
50
60
70
80
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100
LOAD CURRENT (A)
1.8Vout
3.3Vout
LMR10520
www.ti.com
SNVS730A – OCTOBER 2011 – REVISED OCTOBER 2011
LMR10520 SIMPLE SWITCHER® 5.5Vin, 2.0A Step-Down Voltage Regulator in WSON
Check for Samples: LMR10520
1
FEATURES
DESCRIPTION
The LMR10520 regulator is a monolithic, high
Input Voltage Range of 3V to 5.5V
frequency, PWM step-down DC/DC converter in a 6
Output Voltage Range of 0.6V to 4.5V
Pin WSON package. It provides all the active
Output Current up to 2A
functions to provide local DC/DC conversion with fast
transient response and accurate regulation in the
1.6MHz (LMR10520X) and 3 MHz (LMR10520Y)
smallest possible PCB area. With a minimum of
Switching Frequencies
external components, the LMR10520 is easy to use.
Low Shutdown Iq, 30 nA Typical
The ability to drive 2.0A loads with an internal 150
Internal Soft-Start
m
Ω PMOS switch results in the best power density
available. The world-class control circuitry allows on-
Internally Compensated
times as low as 30ns, thus supporting exceptionally
Current-Mode PWM Operation
high frequency conversion over the entire 3V to 5.5V
Thermal Shutdown
input operating range down to the minimum output
voltage
of
0.6V.
The
LMR10520
is
internally
WSON-6 (3 x 3 x 0.8 mm) Packaging
compensated, so it is simple to use and requires few
Fully Enabled for WEBENCH® Power Designer
external components. Even though the operating
frequency is high, efficiencies up to 93% are easy to
PERFORMANCE BENEFITS
achieve. External shutdown is included, featuring an
ultra-low stand-by current of 30 nA. The LMR10520
Extremely Easy to Use
utilizes
current-mode
control
and
internal
Tiny Overall Solution Reduces System Cost
compensation to provide high-performance regulation
over a wide range of operating conditions. Additional
APPLICATIONS
features include internal soft-start circuitry to reduce
inrush current, pulse-by-pulse current limit, thermal
Point-of-Load Conversions from 3.3V, and 5V
shutdown, and output over-voltage protection.
Rails
Space Constrained Applications
Battery Powered Equipment
Industrial Distributed Power Applications
Power Meters
Portable Hand-Held Instruments
System Performance
Efficiency vs Load Current - "X" VIN = 5V
Efficiency vs Load Current - "Y" VIN = 5V
Figure 1.
Figure 2.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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