Overview

Description

The ISL73002SEH is a radiation hardened and SEE hardened high-efficiency monolithic, synchronous buck regulator with integrated MOSFETs. This single-chip power solution operates over an input voltage range of 3V to 5.5V and provides a tightly regulated output voltage that is externally adjustable from 0.8V to ~85% of the input voltage. Output load current capability is primarily determined by PVIN voltage with up to 22A for a single IC at PVIN ≤ 5. 5V for TJ ≤ +125°C. Two ISL73002SEH devices, configured to current share, can provide up to 38A of total output current at PVIN ≤ 5. 5V for TJ ≤ +125 °C assuming ±27% worst-case current share accuracy. The ISL73002SEH uses peak current-mode control with integrated error amp compensation and pin-selectable slope compensation. Switching frequency is also pin selectable to either 1MHz or 500kHz. Two devices can be synchronized 180° out-of-phase to reduce input RMS ripple current. High integration makes the ISL73002SEH an ideal choice to power small form factor applications. Two devices can be synchronized to provide a complete power solution for large-scale digital ICs, like field-programmable gate arrays (FPGAs) that require separate core and I/O voltages.

Features

  • DLA SMD 5962-12202
  • Maximum output current (Single Phase):
    • 22A with external Schottky (TJ ≤125°C, PVIN ≤5.5V)
    • 18A (TJ ≤125°C, PVIN ≤5.5V)
    • 14A (TJ ≤125°C, PVIN ≤6.2V)
    • 12A (TJ ≤150°C, PVIN ≤6.2V)
  • Maximum output current (Dual Phase)
    • 38A (27% worst case current sharing)
  • 1MHz or 500kHz switching frequency
  • 3V to 6.2V supply voltage range
  • ±1% reference voltage (line, load, temperature, and rad)
  • Redundancy/junction isolation: exceptional SET performance
  • Excellent transient response
  • High efficiency >90%
  • Two ISL73002SEH synchronization, inverted-phase
  • Comparator input for enable and power-good
  • Input undervoltage, output undervoltage, and adjustable output overcurrent protection
  • QML qualified per MIL-PRF-38535
  • Full military temperature range operation (-55 °C to +125 °C)
  • Radiation environment
    • LDR (0.01rad(Si)/s): 50krad(Si)
  • SEE hardness
    • SEL and SEB LETTH 86.4MeV/mg/cm2
    • SEFI LETTH 43MeV/mg/cm2
    • SET LETTH 86.4MeV/mg/cm2

Applications

Applications

  • FPGA, CPLD, DSP, CPU core and I/O voltages
  • Low-voltage, high-density distributed power systems

Documentation

Title Type Date
PDF1.05 MB
Datasheet
PDF338 KB
Application Note
PDF4.89 MB
Brochure
PDF364 KB
Brochure
PDF2.81 MB
Report
PDF519 KB
Report
PDF410 KB
Technical Brief
PDF533 KB
White Paper

Design & Development

Boards & Kits

Boards & Kits

Models