TPS6281228QWRWYRQ1

AEC-Q100 qualified for automotive applications Device temperature grade 1: -40℃ to +125℃ TA Functional Safety-Capable Documentation available to aid functional safety system design Input voltage range: 2.75 V to 6 V Family of 1 A, 2 A, 3 A and 4 A Quiescent current 15-μA typical Output voltage from 0.6 V to 5.5 V Output voltage accuracy ±1% (PWM operation) Adjustable soft start Forced PWM or PWM and PFM operation Adjustable switching frequency of 1.8 MHz to 4 MHz Precise ENABLE input allows – User-defined undervoltage lockout Exact sequencing 100% duty cycle mode Active output discharge Spread spectrum clocking - optional Power good output with window comparator Package with wettable flanks The TPS6281x-Q1 is family of pin-to-pin 1-A, 2-A, 3-A and 4-A synchronous step-down DC/DC converters. All devices offer high efficiency and ease of use. The TPS6281x-Q1 family is based on a peak current mode control topology. TPS6281x-Q1 is designed for automotive applications such as Infotainment and advanced driver assistance systems. Low resistive switches allow up to 4-A continuous output current at high ambient temperature. The switching frequency is externally adjustable from 1.8 MHz to 4 MHz and can also be synchronized to an external clock in the same frequency range. In PWM/PFM mode, the TPS6281xQ1 automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. The TPS6281x-Q1 provide 1% output voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy. The SS/TR pin allows setting the start-up time or forming tracking of the output voltage to an external source. This allows external sequencing of different supply rails and limiting the inrush current during start-up. The TPS6281x-Q1 is available in a 3–mm x 2–mm VQFN package with wettable flanks.

Applications

• Infotainment head unit
• Hybrid and reconfigurable cluster
• Telematics control unit
• Surround view ECU, ADAS sensor fusion
• External amplifier