深圳市中立信电子科技有限公司

MAX20050ATC/V+T

LED照明驱动器 2A Synchronous Buck LED Driver with Integrated MOSFETs

2A Synchronous-Buck LED Drivers  with Integrated MOSFETs

General Description

The MAX20050ATC/V+T MAX20050–MAX20053 are high-brightness LED (HB LED) drivers for automotive exterior lighting applications. Consisting of a fully synchronous step-down converter with integrated MOSFETs, the devices are capable of driving a series string of LEDs at up to 2A, with a minimum number of external components. The MAX20050/ MAX20052 utilize internal loop compensation to minimize component count, while the MAX20051/MAX20053 use external compensation for full flexibility.

Applications MAX20050ATC/V+T

● Daytime Running Lamps (DRLs)

● Fog Lamps

● Clearance Lamps (CLLs)

● Corner Lamps (CLs)

● Rear Lamps

● Head Lamps

● Commercial, Industrial, and Architectural Lighting

Benefits and Features MAX20050ATC/V+T

● Fully Synchronous 2A Step-Down Converter with Integrated 0.14Ω (typ) MOSFETs

● Wide 4.5V to 65V Input Supply Range

● Two Switching Frequency Options: 400kHz and 2.1MHz

● Internal Loop Compensation (MAX20050/MAX20052) and External Loop Compensation (MAX20051/MAX20053) Options

● Switching Frequency Synchronized to PWM Dimming Signal

● Active-Low Fault (FLT) Indicator

● Output Short-Circuit Protection

● High-Side Current Regulation Eliminates One Connection to LED String

● Spread-Spectrum Mode Alleviates EMI Problems

● Low 200mV Full-Scale High-Side Current-Sense Voltage

● REFI Pin Adjusts LED Current Down to Zero

● PWM Dimming Disconnects Both High- and LowSide MOSFET Drivers

● 5V, 10mA LDO Output Provides Bias to Other Circuits

● Ultra-Low Shutdown Current (5μA typ)

● Output Overload, Short-Circuit, and Overtemperature Protections

● 12-Pin (3mm x 3mm) TDFN and 14-Pin (5mm x 4.4mm) TSSOP Package Options