PTH04000WAZT

TPSM8281x is a family of pin-compatible, high-efficiency, easy-to-use synchronous step-down DC/DC power modules with integrated inductors, delivering output currents from 1A to 4A. These devices employ a fixed-frequency peak current mode control topology to support high power density requirements in telecom, test and measurement, and medical applications. Low-resistance switches enable continuous output currents up to 4A at high ambient temperatures. The switching frequency is adjustable from 1.8MHz to 4MHz and can be synchronized to an external clock. In PFM/PWM mode, the TPSM8281x maintains high efficiency across the full load range. The device provides 1% output voltage accuracy in PWM mode, facilitating precise power supply design. The SS/TR pin can be used to limit inrush current via a precise startup ramp, or to perform sequencing by tracking the output voltage to an external voltage applied to this pin.

Applications

• Optical modules, data center interconnects
• Test & measurement
• Patient monitoring & diagnostics
• Wireless infrastructure

Key features

• Adjustable and synchronizable switching frequency, range 1.8MHz to 4MHz
• Two package options:
• MagPack package (shielded inductor and IC), 13-pin, height < 2.0mm
• μSIL 14-pin, height < 2.4mm
• Optimized for low EMI:
• Flip-chip die mounting (no bond wires)
• Simplified routing via optimized pin layout
• Spread-spectrum clock version available
• Selectable forced PWM or PFM/PWM operation
• Output voltage accuracy ±1% (PWM operation)
• Input voltage range 2.75V to 6V
• Output voltage range 0.6V to 5.5V
• Adjustable soft-start or tracking
• Power-good output with window comparator
• Precision enable input allows:
• User-defined UVLO
• Precise sequencing
• 100% duty cycle
• Output discharge
• Typical quiescent current 15μA
• Excellent thermal performance
• Operating temperature range -40°C to 125°C
• Pin-compatible 6A version, height 1.6mm: TPSM82816