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LM3409MY-NOPB Datasheet(PDF) 1 Page - Texas Instruments |
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LM3409MY-NOPB Datasheet(HTML) 1 Page - Texas Instruments |
1 / 43 page IADJ EN CSN LM3409/HV UVLO D1 L1 CIN VIN ILED VCC COFF GND Q1 CSP CF ROFF PGATE COFF RUV2 RUV1 DAP VIN VO RSNS 1 2 3 4 5 6 7 8 9 10 LM3409, LM3409HV, LM3409-Q1 www.ti.com SNVS602J – MARCH 2009 – REVISED MAY 2013 PFET Buck Controller for High Power LED Drivers Check for Samples: LM3409, LM3409HV, LM3409-Q1 1 FEATURES DESCRIPTION The LM3409/09N/09HV/09Q/09QHV are P-channel 2 • LM3409Q/LM3409QHV is an Automotive Grade MosFET (PFET) controllers for step-down (buck) Product That is AEC-Q100 Grade 1 Qualified current regulators. They offer wide input voltage • 2 Ω, 1A Peak MosFET Gate Drive range, high-side differential current sense with low • VIN Range: 6V to 42V adjustable threshold voltage and fast output enable/disable function and a thermally enhanced (LM3409/LM3409Q/LM3409N) VSSOP-10 package. These features combine to • VIN Range: 6V to 75V (LM3409HV/LM3409QHV) make the LM3409 family of devices ideal for use as • Differential, High-side Current Sense constant current sources for driving LEDs where • Cycle-by-Cycle Current Limit forward currents up to 5A are easily achievable. • No Control Loop Compensation Required The LM3409 devices use Constant Off-Time (COFT) control to regulate an accurate constant current • 10,000:1 PWM Dimming Range without the need for external control loop • 250:1 Analog Dimming Range compensation. Analog and PWM dimming are easy to • Supports All-Ceramic Output Capacitors and implement and result in a highly linear dimming range Capacitor-less Outputs with excellent achievable contrast ratios. Programmable UVLO, low-power shutdown, and • Low Power Shutdown and Thermal Shutdown thermal shutdown complete the feature set. • Thermally Enhanced VSSOP-10 Package The LM3409/09Q/09N have an operational input • Dual Inline Package (LM3409N) voltage range up to 42V, while the LM3409HV/QHV are high voltage options with an input voltage range APPLICATIONS up to 75V. The LM3409/09HV/09Q/09QHV come in a • LED Driver thermally enhanced 10-lead VSSOP package, while the LM3409N comes in a 14-lead PDIP package. The • Constant Current Source LM3409Q/LM3409QHV are automotive grade • Automotive Lighting products that are AEC-Q100 grade 1 qualified. • General Illumination Typical Application 1 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. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2009–2013, Texas Instruments Incorporated 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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