ALED7709

批量生产
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Automotive LED driver 4-channel 200 mA with a DC-DC controller

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产品概述

描述

ALED7709x are automotive-grade (AEC-Q100 Grade1 qualified) LED drivers combining a boost/SEPIC controller and four low-side constant-current sinkers, designed to drive strings of high brightness LEDs. The switching converter section provides the supply rail for the LED strings, whose value is constantly optimized for maximum efficiency. The boost/SEPIC controller supports the external synchronization and spread spectrum. ALED7709x can work simultaneously or exclusively in standalone mode (SAM), controlled only by PWMI signal, and in bus driven mode (BDM) through an I2C serial interface. The brightness of the four LED strings can be controlled either in global or local mode. In global mode, the ALED7709x supports a mixed PWM and analog dimming to improve the brightness range capability. Only the BDM provides full access to ALED7709x advanced features. PWM dimming frequency can be programmed changing the setting of the internal 16-bit counter, while an internal oscillator avoids the use of an external clock source.

The ALED7709A is dedicated to BDM while ALED7709B is more suitable for SAM. ALED7709x implement basic protections (overvoltage, overcurrent, and thermal shutdown) as well as “Open and Short” LED fault detection, with optional channel auto-disconnect in case of fault.

The devices support an optional P-channel MOSFET in series to the input. It protects the system, LED strings and channels in case of some faulty conditions, output short-to-ground or excessive input voltage transients and it also reduces the power consumption when in standby.

  • 所有功能

    • AEC-Q100 Grade1 qualified
      • Operating temperature range -40 °C < TJ < 150 °C
    • 4.5 V to 42 V operating input voltage range
      • Up to 60 V tolerant for load dump @ 24 V battery
      • Supports battery cranking events down to 4 V supply
    • Simultaneous or exclusive control by PWMI and I2C interface
    • Switching controller section
      • Low shutdown current: ISHDN < 15 µA
      • Fixed frequency peak current-mode controller
      • Cycle-by-cycle power switch OCP
      • Adjustable (250 kHz to 2.2 MHz) switching frequency with optional spread spectrum
      • Synchronized boost and SEPIC topologies support
      • Line switch control for standby power saving and inrush current protection
      • Input overvoltage and output short-circuit protection
    • LED strings control section
      • 4 x 40 V rated constant current outputs
      • Adjustable up to 200 mA per channel
      • ±2% typ. output current accuracy
      • Mixed PWM and Analog dimming
      • 100 Hz to 12.8 kHz dimming frequency
      • Dimming ratio 10000:1 at 100 Hz
      • LED temperature sensor (NTC) management
      • Selectable channels phase-shifting and adjustable Rise/Fall time for reducing EMI
      • Open channel, LED short-circuit detection
      • Two versions available: ALED7709A and ALED7709B

eDesignSuite

eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.

LED Lighting Design Tool

Handles AC-DC and DC-DC design in common topologies
Displays interactive and annotated schematic
Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
LED驱动器
Choose type:
Input Specification
Input Specification
V
This option is required. And must be less than or equal to Volt. Max [V]
V
This option is required. And must be greater than or equal to Volt. Min [V]
Output LED
V
This option is required.
A
This option is required.
Ω
This option is required.
LEDs
This option is required
This option is required
Output: 0

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EDA符号、封装和3D模型

STMicroelectronics - ALED7709

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质量与可靠性

产品型号 Marketing Status 等级规格 符合RoHS级别 材料声明**
ALED7709ATR
批量生产
QFPN 5X5X0.90 24L PITCH 0.65 A.G 汽车应用 Ecopack3
ALED7709BTR
评估
QFPN 5X5X0.90 24L PITCH 0.65 A.G 汽车应用 Ecopack3

ALED7709ATR

Package:

QFPN 5X5X0.90 24L PITCH 0.65 A.G

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

QFPN 5X5X0.90 24L PITCH 0.65 A.G

Grade

Automotive

RoHS Compliance Grade

Ecopack3

ALED7709BTR

Package:

QFPN 5X5X0.90 24L PITCH 0.65 A.G

Material Declaration**:

PDF XML

Marketing Status

评估

Package

QFPN 5X5X0.90 24L PITCH 0.65 A.G

Grade

Automotive

RoHS Compliance Grade

Ecopack3

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

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ALED7709ATR
Available at distributors

经销商的可用性 ALED7709ATR

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ALED7709BTR
Available at distributors

经销商的可用性 ALED7709BTR

代理商名称
地区 库存 最小订购量 第三方链接

代理商库存报告日期:

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ALED7709ATR 批量生产

Budgetary Price (US$)*/Qty:
-
包:
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Country of Origin:
ECCN (US):
ECCN (EU):

产品型号:

ALED7709ATR

Operating Temperature (°C)

Min:

Max:

代理商名称

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ALED7709BTR 评估

Budgetary Price (US$)*/Qty:
-
包:
包装类型:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

产品型号:

ALED7709BTR

Operating Temperature (°C)

Min:

Max:

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(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商