AL8853AQ
AUTOMOTIVE COMPLIANT 40V BOOST/SEPIC CONTROLLER
Description
Pin Assignments
The AL8853AQ is an automotive AEC-Q100 highly integrated and cost-
effective boost controller and single-ended primary-inductance
controller (SEPIC). It provides a high-performance LED lighting
solution with low BOM (bill of material) cost.
(Top View)
8
VIN
PWM
OVP
COMP
FB
1
2
3
4
The AL8853AQ contains
a
PWM (pulse-width modulation)
boost/SEPIC control which uses current-mode and fixed-frequency
operation to regulate the LED current. The LED current is sensed
through an external current-sense resistor. The voltage across the
sensing resistor is compared with reference level of 200mV. The error
is amplified to control the pulse width of the power switch thus to
regulate the current flowing into the LED.
GATE
7
6
5
GND
CS
SO-8
The AL8853AQ offers PWM converted to analog DC dimming mode for
a wide range of dimming control.
The AL8853AQ has comprehensive protection features such as power
MOSFET overcurrent protection (OCP), output overvoltage protection
(OVP), diode & inductor short protection, LED cathode short to GND
protection, IC power-supply undervoltage lockout (UVLO), LED open
protection, VOUT short protection and overtemperature protection
(OTP).
Applications
Automotive LED lamps
Fog lights, reversing lights, daytime running lights
Head lamps
Auto head-up displays
Infotainment and cluster backlight displays
DC-DC power conversion
The AL8853AQ is available in the SO-8 package.
Features
AEC-Q100 Grade 1 Qualified
Wide Input-Voltage Range: 6.0V to 40V
High-Precision Feedback Reference Voltage: 200mV/±3%
Current-Mode PWM Controller with Good Dynamic Response
PWM to Analog Dimming Mode
Fixed 400kHz Switching Frequency
Built-In Comprehensive Protections
.
Undervoltage Lockout (UVLO)
.
.
.
.
.
.
.
Output Overvoltage Protection (OVP)
Power MOSFET Overcurrent Protection (OCP)
Diode- and Inductor-Short Protection
LED Cathode Short-to-GND Protection
LED-Open Protection
VOUT Short Protection
Overtemperature Protection (OTP)
Available in Pb-Free SO-8 package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
The AL8853AQ is suitable for automotive applications
requiring specific change control; this part is AEC-Q100
qualified, PPAP capable, and manufactured in IATF 16949
certified facilities.
https://www.diodes.com/quality/product-definitions/
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and
Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
1 of 15
www.diodes.com
September 2023
© 2023 Copyright Diodes Incorporated. All Rights Reserved.
AL8853AQ
Document number: DS45623 Rev. 2 - 2
5秒后页面跳转
AO3401场效应管参数、引脚图、应用原理图
BT131可控硅参数及引脚图、工作原理详解
74LS32芯片参数、引脚图及功能真值表
全球首块英伟达H200交付 黄仁勋“送货上门”
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
