LM3410_14 Datasheet, PDF (1/44 Pages) Texas Instruments – 525kHz/1.6MHz, Constant Current Boost and SEPIC LED Driver with Internal Compensation

LM3410
www.ti.com
SNVS541F – OCTOBER 2007 – REVISED AUGUST 2010
LM3410/LM3410Q 525kHz/1.6MHz, Constant Current Boost and SEPIC LED Driver with
Internal Compensation
Check for Samples: LM3410
FEATURES
1
•2 Space Saving SOT23-5 & 6-LLP Package
• 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 (LM3410-Y)
– 1.6 MHz (LM3410-X)
• 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 & 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 SOT23,
6-pin LLP, & 8-pin eMSOP 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
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
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.
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