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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

? Input Voltage Operating Range 4.5 V to 40 V

? Three 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 Capability

? High Dimming Ratio of 10 000:1 at 100 Hz

? Integrated Boost/SEPIC 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, UVLO, and OCP

– 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 TPS61193-Q1 is an automotive high-efficiency,

low-EMI, easy-to-use LED driver with an integrated

DC-DC converter. The DC-DC converter supports

both boost and SEPIC mode operation. The device

has three 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-rage adjustable frequency

allows the TPS61193-Q1 to avoid disturbance for AM

radio bands.

The input voltage range for the TPS61193-Q1 is from

4.5 V to 40 V to support automotive stop/start and

load dump condition. The TPS61193-Q1 integrates

extensive fault detection features.