LMR62014_14 Datasheet, PDF (1/22 Pages) Texas Instruments – SIMPLE SWITCHER® 20Vout, 1.4A Step-Up Voltage Regulator in SOT-23

LMR62014
www.ti.com
SNVS735A – OCTOBER 2011 – REVISED NOVEMBER 2011
LMR62014 SIMPLE SWITCHER^® 20Vout, 1.4A Step-Up Voltage Regulator in SOT-23
Check for Samples: LMR62014
FEATURES
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•23 Input Voltage Range of 2.7V to 14V
• Output Voltage up to 20V
• Switch Current up to 1.4A
• 1.6 MHz Switching Frequency
• Low Shutdown Iq, <1 µA
• Cycle-by-Cycle Current Limiting
• Internally Compensated
• 5-Pin SOT-23 Packaging (2.92 x 2.84 x 1.08mm)
• Fully Enabled for WEBENCH^® Power Designer
PERFORMANCE BENEFITS
• Extremely Easy to Use
• Tiny Overall Solution Reduces System Cost
DESCRIPTION
The LMR62014 switching regulator is a current-mode
boost converter operating at fixed frequency of
1.6 MHz.
The use of SOT-23 package, made possible by the
minimal power loss of the internal 1.4A switch, and
use of small inductors and capacitors result in the
industry's highest power density. The LMR62014 is
capable of greater than 90% duty cycle, making it
ideal for boosting to voltages up to 20V.
These parts have a logic-level shutdown pin that can
be used to reduce quiescent current and extend
battery life.
Protection is provided through cycle-by-cycle current
limiting and thermal shutdown. Internal compensation
simplifies design and reduces component count.
APPLICATIONS
• Boost Conversions from 3.3V, 5V, and 12V
Rails
• Space Constrained Applications
• Embedded Systems
• LCD Displays
• LED Applications
System Performance
Efficiency vs Load Current
V_IN = 3.3V, V_OUT = 12V
80
70
60
50
40
30
20
10
0
0 20 40 60 80 100 120 140 160
LOAD (mA)
Efficiency vs Load Current
V_IN = 5V, V_OUT = 12V
100
90
80
70
0 100
200 300 400 500
LOAD CURRENT (mA)
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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.
SIMPLE SWITCHER, WEBENCH are registered trademarks of Texas Instruments.
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All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated