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
• Input Voltage Operating Range 4.5 V to 40 V
• Four High-Precision Current Sinks
– Current Matching 1% (Typical)
– LED String Current up to 100 mA per Channel
– Outputs can be Combined Externally for
Higher Current per String
• High Dimming Ratio of 10 000:1 at 100 Hz
• Integrated Boost/SEPIC Converter for LED String
Power
– Output Voltage up to 45 V
– Switching Frequency 300 kHz to 2.2 MHz
– Switching Synchronization Input
– Spread Spectrum for Lower EMI
• 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
• Backlight for:
– Automotive Infotainment
– Automotive Instrument Clusters
– Smart Mirrors
– Heads-Up Displays (HUD)
– Central Information Displays (CID)
– Audio-Video Navigation (AVN)

3 Description
The TPS61194-Q1 is an automotive high-efficiency,
low-EMI, easy-to-use LED driver with integrated DCDC
converter. The DC-DC converter supports both
boost and SEPIC mode operation. The device has
four high-precision current sinks that can be
combined for higher current capability.
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. For EMI reduction
DC-DC supports spread spectrum for switching
frequency and an external synchronization with
dedicated pin. A wide-range adjustable 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 TPS61194-Q1 integrates
extensive fault detection features.