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TPS92550 Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS92550 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 25 page EP VIN High Power LED String ILED CIN IIN TPS92550 TPS92550 www.ti.com SNVS806C – MAY 2012 – REVISED MAY 2013 TPS92550 450mA 14W Constant Current Buck LED Driver Micro-Module Check for Samples: TPS92550 1 FEATURES DESCRIPTION The TPS92550 Constant Current Buck LED Driver 2 • Integrated all Power Components Including Micro-Module drives maximum 450mA LED current the Power Inductor up to 10 LEDs in a single string (maximum 14W). It • Wide Input Voltage Range : 4.5V–36V integrates all the power components including the • Constant Switching Frequency at 400kHz power inductor. The TPS92550 provides a full turn- key, highly efficient solution for wide range of single • High Contrast Ratio (Minimum dimming string LED lighting applications with up to 96% power current pulse width < 16µs) efficiency. It accepts an input voltage ranging from • Drives up to 10 LEDs in Series at 36V Input 4.5V to 36V and delivers a 350mA LED current as • ±3.6% Typical LED Current Accuracy default. The LED current is adjustable from 300mA to 450mA by changing a single external resistor. • LED Current Adjustable from 300mA to 450mA The module operates at constant switching frequency • Up to 96% Efficiency (400kHz) with low Electro Magnetic Interference • TPS92550 Modules can be Connected in (EMI) complying with EN55015 standard. The module Parallel for Higher Current Operation has fast control loop to realize fine LED current pulse • Input Under-Voltage Lock-Out (UVLO) yielding 256–step PWM dimming resolution at 240Hz for general lighting. Protection feature include thermal • Compatible with Ceramic and Low ESR shutdown, input under-voltage lockout, LED open- Capacitors circuit and short-circuit protections. The TPS92550 • Low Electro Magnetic Interference(EMI) Micro-Module is available in 7-pin PFM power Complies with EN55015 Standard (1) package. • LED Open and Short Circuit Protections • Thermal Shutdown and RoHS Compliant • –40°C to +125 ˚C Junction Temperature Range APPLICATIONS • General Lighting, Desk Lamps – Cabinet Lamps, Decorative Lamps – Street Lamps • Architecture Lighting, Recess Lights – Spot Lights – Underwater Lights PACKAGE HIGHLIGHTS • 7 Lead Easy-to-use Package (Similar to TO- 263) • Single Exposed Die Attach Pad for Enhancing Thermal Performance • 10.2 x 13.8 x 4.6 mm Package Figure 1. Typical Application Circuit (1) EN55015, refer to Figure 36 and Figure 37 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 © 2012–2013, 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. |
Numéro de pièce similaire - TPS92550_16 |
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Description similaire - TPS92550_16 |
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