TPSM82813

• Input voltage range: 2.75 V to 6 V
• Output voltage range: 0.6 V to 5.5 V
• Adjustable and synchronizable switching frequency of 1.8 MHz to 4 MHz
• Spread spectrum clocking - optional

• Selectable forced PWM or PFM/PWM operation

• Output voltage accuracy ±1% (PWM operation)
• Power-good output with window comparator
• 100% duty cycle
• Output discharge
• Precise ENABLE input allows
  • User-defined undervoltage lockout
  • Exact sequencing
• 15-µA typical quiescent current
• Adjustable soft-start or tracking

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TPSM8281x is a family of pin-to-pin 3-A and 4-A compatible high efficiency and easy to use synchronous step-down DC/DC power modules with integrated inductors. They are based on a fixed-frequency peak current-mode control topology. They are used in telecommunication, test and measurement, and medical applications with high power density and ease of use requirements. Low resistance switches allow up to 4-A continuous output current at high ambient temperatures. 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 PFM/PWM mode, the TPSM8281x automatically enters Power Save Mode at light loads to maintain high efficiency across the whole load range. The TPSM8281x provides a 1% output voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy. The SS/TR pin sets the start-up time or tracks the output voltage to an external source. This allows external sequencing of different supply rails and limits the inrush current during start-up.