TPS6281206QWRWYRQ1

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. The 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 TPS6281x-Q1 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 feature allows external sequencing of different supply rails and limiting the inrush current during start-up.

The TPS6281x-Q1 is available in a 3-mm × 2-mm VQFN package with wettable flanks.

Key Features

• AEC-Q100 qualified for automotive applications
  • Device temperature grade 1: –40°C to +125°C T_A
• 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