TPS92660 Datasheet, PDF (1/29 Pages) Texas Instruments – Two-String LED Driver with IC OTP ROM Current Trim

TPS92660
www.ti.com
Two-String LED Driver with I²C OTP ROM Current Trim
Check for Samples: TPS92660
SLUSBC2 – APRIL 2013
FEATURES
1
•2 Input Voltage: Up to 80 V
• Two-Output LED Current Controller
• LED Currents Trimmed Through One-Time
Programmable (OTP) ROM with I²C Interface
• Adjustable SADJ and LADJ Pins for PWM
Dimming of Each LED String
• Input Undervoltage Lockout and Output
Overvoltage Protection
• Enable On/Off
• Accurate 3.0-V Reference Voltage
• > 95% Efficiency
• Thermal Shutdown Protection
• 20-pin TSSOP Exposed Pad Package
APPLICATIONS
• Professional Lighting
• Industrial and Commercial Lighting
• General Illumination
DESCRIPTION
The TPS92660 is a two-output LED driver with one
time programmable (OTP) ROM and I²C interface for
LED current trim. The current trim provides a way for
LED fixture manufacturers to produce LED lighting
fixtures at a consistent lumen output without binning
LEDs.
One output of the device is a non-synchronous buck
controller which is used to regulate current of higher
power white LEDs. The other output of the device is a
linear regulator controller which is used to regulate
current of lower power red LEDs. The TPS92660 is
used for applications of controlled CCT (correlated
color temperature) LED lights by mixing white LEDs
with red LEDs.
This device is available in a 20-pin, TSSOP exposed
pad package.
TYPICAL APPLICATION
VOUT 1
AC /DC
Front End
VOUT 2
LED2+
LED1+
I²C
Interface
Dimming
Signal
EN /UVLO
RON
VIN
VCC
GATE
VO
SW
TPS92660
GND
BOOT
REF
SVDD
SCL
SDA
SADJ
LADJ
CS
COMP
GND
LNG
LNCS
VCC
LED1+
LED2+
UDG-12217
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.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated