LM3409HV-Q1 Datasheet | Texas Instruments

Features - 1 LM3409-Q1 and LM3409HV-Q1 are Automotive Grade Products: AEC-Q100 Grade 1 Qualified - 2-Ω, 1-A Peak MOSFET Gate Drive - VIN Range: 6 V to 42 V (LM3409, LM3409-Q1) - VIN Range: 6 V to 75 V (LM3409HV, LM3409HV- Q1) - Differential, High-Side Current Sense - Cycle-by-Cycle Current Limit - No Control Loop pensation Required - 10,000:1 PWM Dimming Range - 250:1 Analog Dimming Range - Supports All-Ceramic Output Capacitors and Capacitor-less Outputs - Low-Power Shutdown and Thermal Shutdown - Thermally Enhanced 10-Pin, HVSSOP Package 2 Applications - LED Driver - Constant Current Source - Automotive Lighting - General Illumination 3 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 bine 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 pensation. 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 plete the feature set. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM3409 HVSSOP (10) PDIP (14) 3.00 mm × 3.00 mm 19.177 mm × 6.35 mm LM3409-Q1 LM3409HV HVSSOP (10) 3.00 mm × 3.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Schematic RUV2 RUV1 1 UVLO 2...