TPS62813MWRWYR

TPS6281xM is a pin-to-pin compatible family of 1A, 2A, 3A, and 4A synchronous buck DC/DC converters. All devices offer high efficiency and ease of use. This device family is based on a peak current mode control topology. Low-resistance switches support continuous output currents up to 4A in high-temperature environments. The switching frequency can be externally adjusted over a range of 1.8MHz to 4MHz, or synchronized to an external clock within this frequency range. The device automatically enters Power Save Mode (PSM) under light-load conditions, maintaining high efficiency across the full load range. The device provides 1% output voltage accuracy in PWM mode, facilitating power supply designs with high output voltage precision. The SS/TR pin allows users to set the startup time or track the output voltage to an external source, enabling external sequencing of different power rails and limiting inrush current during startup. TPS6281xM devices are available in a 2mm x 3mm VQFN package with wettable flanks.

Applications

• Railway transportation

Key features

• Functional safety support with documentation for functional safety system design
• Junction temperature range: -55°C to +150°C
• Input voltage range: 2.75V to 6V
• 1A, 2A, 3A, and 4A converter family
• Quiescent current: 15μA (typical)
• Output voltage range: 0.6V to 5.5V
• Output voltage accuracy: ±1% (FPWM operation)
• Adjustable soft-start
• Start-up at -55°C
• Forced PWM or PWM and PFM operation
• Adjustable switching frequency: 1.8MHz to 4MHz
• Precision enable input supports: user-defined UVLO; accurate sequencing
• 100% duty cycle mode
• Active output discharge
• Spread spectrum clock — optional
• Power-good output with window comparator
• Wettable flank package