LM3410XMF Datasheet, PDF (1/49 Pages) Texas Instruments – 525kHz/1.6MHz, Constant Current Boost and SEPIC LED Driver with Internal Compensation

LM3410, LM3410Q
www.ti.com
SNVS541G – OCTOBER 2007 – REVISED MAY 2013
525kHz/1.6MHz, Constant Current Boost and SEPIC LED Driver with Internal
Compensation
Check for Samples: LM3410, LM3410Q
FEATURES
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•23 Space Saving SOT-23 and WSON Packages
• Input Voltage Range of 2.7V to 5.5V
• Output Voltage Range of 3V to 24V
• 2.8A Typical Switch Current
• High Switching Frequency
– 525 KHz (LM3410Y)
– 1.6 MHz (LM3410X)
• 170 mΩ NMOS Switch
• 190 mV Internal Voltage Reference
• Internal Soft-Start
• Current-Mode, PWM Operation
• Thermal Shutdown
• LM3410Q is AEC-Q100 Grade 1 Qualified and
is Manufactured on an Automotive Grade Flow
APPLICATIONS
• LED Backlight Current Source
• LiIon Backlight OLED and HB LED Driver
• Handheld Devices
• LED Flash Driver
• Automotive
DESCRIPTION
The LM3410 constant current LED driver is a
monolithic, high frequency, PWM DC/DC converter in
5-pin
SOT-23, 6-pin WSON, and 8-pin MSOP-PowerPad™
packages. With a minimum of external components
the LM3410 is easy to use. It can drive 2.8A typical
peak currents with an internal 170 mΩ NMOS switch.
Switching frequency is internally set to either 525 kHz
or 1.60 MHz, allowing the use of extremely small
surface mount inductors and chip capacitors. Even
though the operating frequency is high, efficiencies
up to 88% are easy to achieve. External shutdown is
included, featuring an ultra-low standby current of 80
nA. The LM3410 utilizes current-mode control and
internal compensation to provide high-performance
over a wide range of operating conditions. Additional
features include dimming, cycle-by-cycle current limit,
and thermal shutdown.
Typical Boost Application Circuit
L₁
D₁
V_IN
DIMM
4
DIM
5
C₁
VIN
3
FB
2
GND
1
SW
LEDs
C₂
R₁
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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.
PowerPad is a trademark 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 © 2007–2013, Texas Instruments Incorporated