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TPS92550 Fiches technique(PDF) 1 Page - Texas Instruments

No de pièce TPS92550
Description  450mA 14W Constant Current Buck LED Driver Micro-Module
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS92550 Fiches technique(HTML) 1 Page - Texas Instruments

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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.


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