Texas Instruments TPS6281x-Q1 Step-Down Converters

Texas Instruments TPS6281x-Q1 Step-Down Converters are pin-to-pin 1A, 2A, 3A, and 4A synchronous automotive step-down DC/DC converters. These converters are high-efficiency and are based on a peak current mode control topology. The TPS6281x-Q1 devices automatically enter power save mode at light loads to maintain high efficiency across the whole load range in PWM/PFM mode. These automotive devices provide 1% output voltage accuracy in PWM mode, which helps design a power supply with high output voltage accuracy. The TPS6281x-Q1 step-down converters are available in a 3mm x 2mm VQFN package with wettable flanks. These TPS6281x-Q1 devices are AEC-Q100 qualified for automotive applications. The TPS6281x-Q1 step-down converters are ideal for infotainment head units, hybrid and reconfigurable clusters, telematics control units, surround view ECUs, ADAS sensor fusion, and external amplifiers.

Features

AEC-Q100 qualified for automotive applications:
- -40°C to 125°C T_A device temperature grade 1
Functional safety-capable documentation is available to aid in functional safety system design
2.75V to 6V input voltage range
Family of 1A, 2A, 3A, and 4A
Quiescent current 15µA typical
0.6V to 5.5V output voltage range
±1% output voltage accuracy (PWM operation)
Adjustable soft start
Forced PWM or PWM and PFM operation

1.8MHz to 4MHz adjustable switching frequency range
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