TPS92612-Q1中文资料德州仪器数据手册PDF规格书

1 Features

1• AEC-Q100 Qualified for Automotive Applications

– Device Temperature Grade 1:

–40°C to 125°C, TA

• Functional safety capable

– Documentation available to aid functional

safety system design

• Single-Channel Constant-Current LED Driver With

PWM Dimming

• Wide Input-Voltage Range: 4.5 V–40 V

• Constant Output Current, Adjustable by Sense

Resistor

• Precision Current Regulation, Tolerance ±4.6%

• Maximum Current: 150 mA

• Heat Sharing With External Resistor

• 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 Standby Current (<250 μA per Device)

• Protection:

– LED Short-Circuit Protection With Auto-

Recovery

– Overtemperature Protection

• Operating Junction Temperature Range: –40°C to

150°C

2 Applications

• Automotive Convenience Lighting: Dome Light,

Door Handles, Reading Lamp, and Miscellaneous

Lamps

• Automotive Rear Lamp, Center High-Mounted

Stop Lamp, Side Markers, Blind-Spot Detection

Indicator, Charging Inlet Indicator

• General-Purpose LED Driver Applications

3 Description

With LEDs being widely used in automotive

applications, 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-Q1 device is a simple single-channel

high-side LED driver operating from an automotive

car battery. It is a simple and elegant solution to

deliver constant current for a single LED string.