Datasheet Texas Instruments LM3404

Manufacturer	Texas Instruments
Series	LM3404

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Parametrics

Parameters / Models	LM3404MA/NOPB	LM3404MAX/NOPB	LM3404MR/NOPB	LM3404MRX/NOPB
Dimming Method	PWM	PWM	PWM	PWM
Input Voltage, Type	DC/DC	DC/DC	DC/DC	DC/DC
Iout(Max), A	1	1	1	1
Iq(Typ), mA	0.625	0.625	0.625	0.625
Operating Temperature Range, C	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Package Group	SOIC	SOIC	SO PowerPAD	SO PowerPAD
Package Size: mm2:W x L, PKG	8SOIC: 29 mm2: 6 x 4.9(SOIC)	8SOIC: 29 mm2: 6 x 4.9(SOIC)	8SO PowerPAD: 29 mm2: 6 x 4.9(SO PowerPAD)	8SO PowerPAD: 29 mm2: 6 x 4.9(SO PowerPAD)
Power Factor Correction, Min	N/A	N/A	N/A	N/A
Rating	Catalog	Catalog	Catalog	Catalog
Regulated Outputs	1	1	1	1
Special Features	Adjustable Switch Frequency,Enable/Shutdown,Integrated Switch,Thermal Shutdown	Adjustable Switch Frequency,Enable/Shutdown,Integrated Switch,Thermal Shutdown	Adjustable Switch Frequency,Enable/Shutdown,Integrated Switch,Thermal Shutdown	Adjustable Switch Frequency,Enable/Shutdown,Integrated Switch,Thermal Shutdown
Switching Frequency(Max), kHz	1000	1000	1000	1000
Switching Frequency(Min), kHz	20	20	20	20
Topology	Buck	Buck	Buck	Buck
Type	Inductive	Inductive	Inductive	Inductive
Vin(Max), V	42	42	42	42
Vin(Min), V	6	6	6	6
Vout(Max), V	40	40	40	40
Vout(Min), V	0.2	0.2	0.2	0.2
Vref, V	0.2	0.2	0.2	0.2

Eco Plan

Application Notes

• Download
  Thermal Performance of the LM3404/04HV in SO-8 and PSOP-8 Packages (Rev. A)
  PDF, 146 Kb, Revision: A, File published: May 1, 2013
  The LM3404/04HV is a buck-regulator designed for driving high powered LEDs at forward currents of upto 1.0A. LED drivers often experience thermal conditions that are extreme even by the standards ofswitching converters. For example, LED drivers are often placed on the same metal-core PCB (MCPCB)as the LEDs themselves. At 1.0A, a single-die white LED can dissipate more than 3W. The temperatur
• Download
  AN-1853 COT Drivers Control LED Ripple Current (Rev. A)
  PDF, 76 Kb, Revision: A, File published: May 1, 2013
  The constant on-time (COT) control method used by the LM3402 and LM3404 constant-current buckregulators provides a balance between control over switching frequency and fast transient response.Normally this "quasi-hysteretic" control senses the input voltage and adjusts the on-time tON of the powerMOSFET as needed to keep fSW constant. Investigating a little more deeply reveals that tON is in
• Download
  AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A)
  PDF, 60 Kb, Revision: A, File published: Apr 23, 2013
  The world seems to be poised to make the leap to LED lighting. Incandescent has been deemed tooinefficient, which it is, and fluorescent lighting often does not achieve the lifetime it claims. Fluorescentalso has another set of baggage, dangerous chemicals. So the logical choice that most people believe cantake the crown is high brightness (HB) LEDs. HBLEDs are becoming more attractive as th
• Download
  Driving LEDs: To Cap or Not to Cap
  PDF, 542 Kb, File published: Mar 21, 2007
• Download
  AN-1656 Design Challenges of Switching LED Drivers (Rev. A)
  PDF, 171 Kb, Revision: A, File published: May 3, 2013
  Using a switching regulator as an LED driver requires the designer to convert a voltage regulator into acurrent regulator. Beyond the challenge of changing the feedback system to control current, the LEDsthemselves present a load characteristic that is much different than the digital devices and other loads thatrequire constant voltage. The LED WEBENCHВ® online design environment predicts and

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Manufacturer's Classification

• Semiconductors> Power Management> LED Driver> LED Lighting - Illumination