1 Features
• Single-channel high-precision current source:
– ±4.6% Current accuracy from –40°C to +125°C
– Current adjustable by external sense resistor
– Up to 150 mA maximum current
• Wide input-voltage range: 4.5 V – 40 V
• Brightness control by input PWM duty cycle
• Low dropout voltage (current-sense voltage drop
included)
– Maximum dropout: 150 mV at 10 mA
– Maximum dropout: 400 mV at 70 mA
– Maximum dropout: 700 mV at 150 mA
• Low quiescent current: typical 200 μA
• Protection:
– LED short-circuit protection with auto-recovery
– Thermal shutdown
• Support heat sharing with external resistor
• Operating junction temperature range: –40°C to
+150°C

2 Applications
• LED driver, constant current source, or current
limiter for:
– Washer and dryer
– Refrigerator and freezer
– Gas detector
– Factory automation and control
– Building automation
– Medical

3 Description
With LEDs being widely used as a light source,
simple LED drivers are more and more popular.
Compared to discrete solutions, a low-cost monolithic
solution lowers system-level component counts and
significantly improves current accuracy and reliability.
The TPS92612 device is a single-channel high-side
linear LED driver operating from a wide range supply.
It is a simple, yet elegant solution to deliver constant
current for a single LED string. It can support offboard
LED connection with long cables. The
TPS92612 device can also be used as a general
constant current source or current limiter in other
applications.