Diodes Incorporated AL8853AQ Boost Controller

Diodes Incorporated AL8853AQ Boost Controller is an automotive AEC-Q100 highly integrated and cost-effective boost controller. This controller contains a Pulse-Width Modulation (PWM) boost driver that uses current-mode control and fixed-frequency operation to regulate the LED current. This LED current is sensed through an external current-sense resistor. The AL8853AQ boost controller operates at a wide input voltage range of 6V to 40V and has a high-precision feedback reference voltage of 200mV. This boost controller offers PWM to analog dimming mode for a wide range of dimming controls and features a 400kHz fixed switching frequency. The AL8853AQ boost controller is ideally used in automotive LED lamps, fog lights, reversing lights, headlights, auto head-up displays, and DC-DC converters.

Features

6V to 40V Wide input-voltage range
AEC-Q100 Grade 1 qualified
200mV/±3% High-precision feedback reference voltage
Current-mode PWM controller with good dynamic response
PWM to Analog dimming mode
Fixed 400kHz switching frequency
-40°C to 125°C Operating temperature range
Available in Pb-free SO-8 package
RoHS compliant

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
- V_OUT short protection
- Overtemperature Protection (OTP)

Applications

Automotive LED lamps
Fog lights
Reversing lights
Daytime running lights
Headlights

Auto head up displays
Infotainment and cluster backlight displays
DC-DC converters

Diodes Incorporated AL8853AQ Boost Controller

Features

Applications

Typical Application Circuits

Block Diagram

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