AL5873Q
55V/250mA THREE-CHANNEL LINEAR LED DRIVER ADVANCED INFORMATION Description Pin Assignments
Top View The AL5873Q is an automotive-grade three-channel linear LED
driver with PWM dimming and analog dimming control. Each channel
can drive up to 250mA with a total driving current up to 750mA. The
LED channel current of the AL5873Q can be set by two reference
resistors connected to the REF1 and REF2 pin. VIN 1 16 FAULTB NC 2 15 ADIM 14 REF1 13 FULL 12 REF2 PWM 3 The AL5873Q regulates LED current for each channel, accurate
down to ±4%, with excellent dimming performance. The AL5873Q NC 4 enters standby mode to save power if no PWM signal is detected. NC 5 GND 6 11 LED1 GND 7 10 LED2 GND 8 9 LED3 The AL5873Q monitors the temperature and reduces the LED current
if the chip temperature exceeds the threshold temperature. And the
input under voltage lock-out (UVLO), LED string open / short
protection, over temperature protection (OTP), and fault indicator
(FAULTB) are designed for automotive applications to improve
system robustness. EP TSSOP-16EP (Type DX) The AL5873Q is available in TSSOP-16EP (Type DX) package. Applications
Features Automotive LED Inner Lamps AEC-Q100 Grade 1 Qualification Rear Light – Tail and Stop Light, Rear Turn Indicator, Parking Wide Input Voltage Range from 5V to 55V Each Channel Up to 250mA Current Capability
Set Stop and Tail Current Independently Through 2 Resistors
Switch LED Current Between Stop and Tail Function
Automatically via FULL Input
PWM Dimming via Both PWM Input and Power Supply
Analog Dimming via ADIM Input
Automatically Enter and Exit Standby Mode without Enable Pin
Internal Protections:
Input Under Voltage Lock-Out (UVLO)
LED String Open Protection …