AFE43902-Q1 Series
Automotive two-channel 8-bit smart DAC with multislope thermal foldback control with built-in ADC
Manufacturer: Texas Instruments
Catalog
Automotive two-channel 8-bit smart DAC with multislope thermal foldback control with built-in ADC
Key Features
• AEC-Q100 qualified for automotive applications:Temperature grade 1: –40°C to +125°C, T AMultislope thermal foldback10-bit analog-to-digital converter (ADC) inputDigital-to-analog converter (DAC) output10-bit ( AFE53902-Q1)8-bit ( AFE43902-Q1)Pulse Width Modulation (PWM) output with 7‑bit duty cycleStandalone operation from nonvolatile memory (NVM)Look-up table (LUT) based parameter configurationPiecewise-linearizer for thermistorAutomatically detects I 2C or SPI1.62-V V IH with V DD = 5.5 VVREF/MODE pin selects between programming and standalone modesUser-programmable NVMInternal, external, or VDD referenceWide operating rangePower supply: 1.8 V to 5.5 VTiny package: 16-pin WQFN (3 mm × 3 mm)AEC-Q100 qualified for automotive applications:Temperature grade 1: –40°C to +125°C, T AMultislope thermal foldback10-bit analog-to-digital converter (ADC) inputDigital-to-analog converter (DAC) output10-bit ( AFE53902-Q1)8-bit ( AFE43902-Q1)Pulse Width Modulation (PWM) output with 7‑bit duty cycleStandalone operation from nonvolatile memory (NVM)Look-up table (LUT) based parameter configurationPiecewise-linearizer for thermistorAutomatically detects I 2C or SPI1.62-V V IH with V DD = 5.5 VVREF/MODE pin selects between programming and standalone modesUser-programmable NVMInternal, external, or VDD referenceWide operating rangePower supply: 1.8 V to 5.5 VTiny package: 16-pin WQFN (3 mm × 3 mm)
Description
AI
The 10-bit AFE53902-Q1 and 8-bit AFE43902-Q1 devices ( AFEx3902-Q1) are dual-channel, smart analog front ends (AFE) targeted for multislope thermal foldback of LED lighting. The output of LED lights reduce with an increase in temperature. Multislope thermal foldback helps maintain a steady light output from LEDs, irrespective of temperature change, while limiting the LED temperature to programmed thresholds.
The AFEx3902-Q1 have an ADC for temperature input and a DAC or PWM generator as an output. These devices have an integrated state machine that is preprogrammed as a multislope thermal foldback controller. The AFEx3902-Q1 are an excellent choice for thermal foldback of automotive rear lights and headlights, as well as horticulture lights. The AFEx3902-Q1 work independently from the parameters programed into the NVM, and thus enable these smart AFEs for processor-less applications and design reuse. These devices also automatically detect I 2C or SPI, and have an internal reference.
The 10-bit AFE53902-Q1 and 8-bit AFE43902-Q1 devices ( AFEx3902-Q1) are dual-channel, smart analog front ends (AFE) targeted for multislope thermal foldback of LED lighting. The output of LED lights reduce with an increase in temperature. Multislope thermal foldback helps maintain a steady light output from LEDs, irrespective of temperature change, while limiting the LED temperature to programmed thresholds.
The AFEx3902-Q1 have an ADC for temperature input and a DAC or PWM generator as an output. These devices have an integrated state machine that is preprogrammed as a multislope thermal foldback controller. The AFEx3902-Q1 are an excellent choice for thermal foldback of automotive rear lights and headlights, as well as horticulture lights. The AFEx3902-Q1 work independently from the parameters programed into the NVM, and thus enable these smart AFEs for processor-less applications and design reuse. These devices also automatically detect I 2C or SPI, and have an internal reference.