LM3409QMY/NOPB Part Information

Details for LM3409QMY/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs

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Part Description

The LM3409, LM3409-Q1, LM3409HV, and LM3409HV-Q1 are P-channel MOSFET (PFET) controllers for step-down (buck) current regulators. They offer wide input voltage range, high-side differential current sense with low adjustable threshold voltage and fast output enable/disable function and a thermally enhanced 10-pin, HVSSOP package. These features combine to make the LM3409 family of devices ideal for use as constant current sources for driving LEDs where forward currents up to 5 A are easily achievable. The LM3409 devices use constant off-time (COFT) control to regulate an accurate constant current without the need for external control loop compensation. Analog and PWM dimming are easy to implement and result in a highly linear dimming range with excellent achievable contrast ratios. Programmable UVLO, low-power shutdown, and thermal shutdown complete the feature set.

Part Downloads

Part Features

  • 10,000:1 PWM Dimming Range
  • 2-u2126, 1-A Peak MOSFET Gate Drive
  • 250:1 Analog Dimming Range
  • Cycle-by-Cycle Current Limit
  • Differential, High-Side Current Sense
  • LM3409-Q1 and LM3409HV-Q1 are Automotive Grade Products: AEC-Q100 Grade 1 Qualified
  • Low-Power Shutdown and Thermal Shutdown
  • No Control Loop Compensation Required
  • Supports All-Ceramic Output Capacitors and Capacitor-less Outputs
  • Thermally Enhanced 10-Pin, HVSSOP Package
  • VIN Range: 6 V to 42 V (LM3409, LM3409-Q1)
  • VIN Range: 6 V to 75 V (LM3409HV, LM3409HV- Q1)

Part Specifications

Device Topology Non Isolated Buck (Step Down)
Input Voltage Min 6V
Input Voltage Max 42V
Output Voltage Max 42V
Output Current Max 5A
Switching Frequency 2MHz
No. of Outputs 1Outputs
IC Mounting SMD
Driver Case Style MSOP PowerPAD
No. of Pins 10Pins
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard AEC-Q100
RoHS Phthalates Compliant Yes
MSL MSL 3 - 168 hours
SVHC No SVHC (27-Jun-2018)
Output Current 1A
Output Voltage 42V
RoHS Compliant

Alternative Part Descriptions

  • 42-V automotive PFET buck controller for high power LED Drives | Texas Instruments

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