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2.75-V to 6-V, 4-A step-down module with adjustable-frequency and tracking in 3mm x 4mm uSIL

Availability: 1,935


Package | PIN: USIP (SIL) | 14
Temp: Q (-40 to 125)
Package qty | Carrier: 3,000 | LARGE T&R
Qty Price
1-99 $3.47
100-249 $3.04
250-999 $2.13
1,000+ $1.72


  • Input voltage range: 2.75 V to 6 V
  • 3-A and 4-A versions
  • 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/PFM operation
  • Adjustable switching frequency of
    1.8 MHz to 4 MHz
  • Precise ENABLE input allows
    • User-defined undervoltage lockout
    • Exactsequencing
  • 100% duty cycle mode
  • Active output discharge
  • Spread spectrum clocking - optional
  • Power good output with window comparator

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Texas Instruments  XPSM82810SILT

TPSM8281x is a family of pin-to-pin 3-A and 4-A high efficiency and easy to usesynchronous step-down DC/DC converters. They are based on a peak current mode control topology.They are designed for Telecommunication, Test and Measurement and Medical applications with highpower density and ease of use requirements. Low resistive switches allow up to 4-A continuousoutput current at high ambient temperature. The switching frequency is externally adjustable from1.8 MHz to 4 MHz and can also be synchronized to an external clock in the same frequency range. InPWM/PFM mode, TPSM8281x automatically enters Power Save Mode at light loads to maintain highefficiency across the whole load range. TPSM8281x provides a 1% output voltage accuracy in PWM modewhich helps design a power supply with high output voltage accuracy. The SS/TR pin allows settingthe start-up time or forming tracking of the output voltage to an external source. This allowsexternal sequencing of different supply rails and limiting the inrush current duringstart-up.

The TPSM8281x is available as an adjustable version, packaged in a 3-mm x 4-mm µSilmodule with integrated inductor.