TPS61194-Q1 Datasheet, PDF (1/35 Pages) Texas Instruments – High-Performance 4-Channel LED Driver for Automotive Lighting

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TPS61194-Q1
SNVSAE9A – DECEMBER 2015 – REVISED JANUARY 2016
TPS61194-Q1 High-Performance 4-Channel LED Driver for Automotive Lighting
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to
+125°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4B
• Input Voltage Operating Range 4.5 V to 40 V
• Four High-Precision Current Sinks
– Current Matching 1% (Typical)
– Output Current up to 100 mA per Channel
– Outputs can be Combined Externally for
Higher Current per String
• High Dimming Ratio 10 000:1 at 200 Hz
• Integrated DC-DC for LED String Power
– Boost and SEPIC Modes Supported
– Output Voltage up to 45 V
– Switching Frequency 300 kHz to 2.2 MHz
• EMI Minimization
– DC-DC Synchronization Input
– Spread Spectrum Option
• Extensive Fault Detection Features
– Fault Output
– Input Voltage OVP and UVLO
– Open and Shorted LED Fault Detection
– Thermal Shutdown
• Minimum Number of External Components
2 Applications
Automotive Infotainment, Instrument Clusters, and
Backlighting Systems
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3 Description
The TPS61194-Q1 is an automotive high-efficiency,
low-EMI, easy-to-use LED driver with integrated DC-
DC converter. DC-DC converter supports both boost
and SEPIC mode operation. Device has four high-
precision current sinks that can provide high dimming
ratio brightness control with a PWM input signal.
The DC-DC converter has adaptive output voltage
control based on the LED current sink headroom
voltages. This feature minimizes the power
consumption by adjusting the voltage to the lowest
sufficient level in all conditions. DC-DC supports
spread spectrum for switching frequency and an
external synchronization with dedicated pin. The high
switching frequency allows the TPS61194-Q1 to
avoid disturbance for AM radio band.
The input voltage range for the TPS61194-Q1 is from
4.5 V to 40 V to support automotive stop/start and
load dump condition. The device supports PWM
brightness dimming ratio 10 000:1 for 200-Hz input
PWM frequency. The TPS61194-Q1 integrates
extensive fault detection features.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61194-Q1
HTSSOP (20)
6.50 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
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1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.