Datasheet ALT80800 (Allegro) - 2

Automotive-Grade, Constant-Current 2.0 A ALT80800 PWM Dimmable Synchronous Buck LED Driver SELECTION GUIDE Part Number Package Packing
ALT80800KLPATR 16-pin TSSOP with exposed thermal pad 4000 pieces per 13-inch reel
SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Notes Rating Unit
Supply Voltage VIN, VVCCIN –0.3 to 60 V Bootstrap Drive Voltage VBOOT –0.3 to VIN + 8 V Continuous –0.3 to V Switching Voltage V IN + 0.3 V SW Pulsed, t < 50 ns –1 to VIN + 3 V EN Voltage VEN V –0.3 to VIN + 0.3 Current Sense Voltages VCSH, VCSL V Linear Regulator Terminal VCC V ADIM pin, TON pin VADIM, VTON V –0.3 to 7 FDSET Voltages VFDSET V FFn and PWM Voltages VFFn, VPWM V Maximum Junction Temperature TJ(max) 150 °C Storage Temperature Tstg –55 to 150 °C
THERMAL CHARACTERISTICS*:
May require derating at maximum conditions; see application section for optimization
Characteristic Symbol Test Conditions* Value Unit
Package Thermal Resistance (Junction to Ambient) RθJA On 4-layer PCB based on JEDEC standard 34 °C/W Package Thermal Resistance (Junction to Pad) RθJP 2 °C/W *Additional thermal information available on the Allegro™ website.
Table of Contents
Features and Benefits 1 Pinout Diagrams and Terminal List Tables 3 Description 1 Functional Block Diagrams 4 Applications 1 Electrical Characteristics 5 Package 1 Functional Description 7 Typical Application Circuit 1 Application Circuit Diagrams 20 Selection Guide 2 Specifications 2 Absolute Maximum Ratings 2 Thermal Characteristics 2 2 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Document Outline Features and Benefits Description Applications Package Typical Application Circuit Selection Guide Specifications Absolute Maximum Ratings Thermal Characteristics Pinout Diagrams and Terminal List Tables Functional Block Diagrams Electrical Characteristics Functional Description Application Circuit Diagrams