Datasheet > AFE53902-Q1

AFE53902-Q1

更新时间： 2024-11-08 15:19:19

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
65页	2584K
描述
具有多斜率热折返控制和内置 ADC 的汽车级双通道 10 位智能 DAC

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AFE53902-Q1 数据手册

AFE53902-Q1, AFE43902-Q1

SBASAC2 – JUNE 2023

AFEx3902-Q1 Smart Analog Front End (AFE) for Multislope Thermal Foldback and

LUT-Based Control With I²C and SPI

1 Features

3 Description

•

AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to +125°C, T_A

Multislope thermal foldback

– 10-bit analog-to-digital converter (ADC) input

– Digital-to-analog converter (DAC) output

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.

•

10-bit (AFE53902-Q1)

8-bit (AFE43902-Q1)

– Pulse Width Modulation (PWM) output with

7‑bit duty cycle

– Standalone operation from nonvolatile memory

(NVM)

– Look-up table (LUT) based parameter

configuration

– Piecewise-linearizer for thermistor

Automatically detects I²C or SPI

– 1.62-V V_IHwith V_DD= 5.5 V

VREF/MODE pin selects between programming

and standalone modes

User-programmable NVM

Internal, external, or VDD reference

Wide operating range

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

I²C or SPI, and have an internal reference.

•

– Power supply: 1.8 V to 5.5 V

Tiny package: 16-pin WQFN (3 mm × 3 mm)

Device Information

•

PART NUMBER

AFE53902-Q1

RESOLUTION

10-bit

8-bit

PACKAGE⁽¹⁾

2 Applications

RTE (WQFN, 16)

AFE43902-Q1

•

Automotive rear light

Automotive headlight

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

VDD

PWM (Option 2)

PWM

Generator

DIMMING

OUT

CSP

I_LED

R_CS

VDD

Resistor

Network

OUT1 (Option 1)

CSN

IADJ

DAC1

FB1

LED Driver

State

Machine

NTC

VDD

AIN0

Resistor

Network

NVM

ADC0

FB0

AFEx3902-Q1

Multislope Thermal Foldback Using AFEx3902-Q1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...65

中文翻译

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与AFE53902-Q1相关器件

型号	品牌	获取价格	描述	数据表
AFE53902RTERQ1	TI	获取价格	具有多斜率热折返控制和内置 ADC 的汽车级双通道 10 位智能 DAC \| RTE \|
AFE539A4	TI	获取价格	具有 PID/TEC 控制功能的四通道 10 位智能模拟前端 (AFE)，具有内置 ADC
AFE5401-Q1	TI	获取价格	用于汽车雷达的四通道集成模拟前端
AFE5401TRGCRQ1	TI	获取价格	用于汽车雷达的四通道集成模拟前端 \| RGC \| 64 \| -40 to 105
AFE5401TRGCTQ1	TI	获取价格	用于汽车雷达的四通道集成模拟前端 \| RGC \| 64 \| -40 to 105
AFE5801	TI	获取价格	8-Channel Variable-Gain Amplifier (VGA) With Octal High-Speed ADC
AFE5801_14	TI	获取价格	8-Channel Variable-Gain Amplifier (VGA) With Octal High-Speed ADC
AFE5801IRGCR	TI	获取价格	8-Channel Variable-Gain Amplifier (VGA) With Octal High-Speed ADC
AFE5801IRGCT	TI	获取价格	8-Channel Variable-Gain Amplifier (VGA) With Octal High-Speed ADC
AFE5803	TI	获取价格	Fully Integrated, 8-Channel Ultrasound Analog Front End

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