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SY21173FCC (SY8493FCC)

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High Efficiency, 60V Input, 3A Asynchronous Step Down Regulator
Datasheet
SY21173FCC High Efficiency, 60V Input, 3A Asynchronous Step Down Regulator Datasheet
Part number SY21173FCC
Channel(#) 1
Vin (min) (V) 4.5
Vin (max) (V) 60
Switching frequency (min)(kHz) 100
Switching frequency (max)(kHz) 500
Vout (min) (V) 0.8
Vout (max) (V) 24
Iout (max) (A) 3
Vout2 (min)(V)
Vout2 (max )(V)
Iout2 (max)(A)
Vref accuracy (±%) 1
Vout accuracy(±%)
Control mode COT+Ivalley
Duty cycle (max)(%) 75
Operation mode Auto PFM
Iq (typ) (uA) 100
Features Power good,Asynchronous
Package SO8E
Operating temperature range(°C) -40 to 125
Functional safety category
  • Low RDS(ON) for Internal N-channel Power FET(TOP):150mΩ
  • 4.5-60V Input Voltage Range
  • 3A Output Current Capability
  • Adjustable Switching Frequency Range: 100kHz to 500kHz
  • Internal Soft-start Limits the Inrush Current
  • Hic-cup Mode Output Short Circuit Protection
  • EN ON/OFF Control with Accurate Threshold
  • Cycle-by-cycle Peak Current Limit
  • 0.8V± 1% Reference Voltage Accuracy
  • Compact Package: SO8E

Evaluation Board

  • 21173-1

    Photo of evaluation board

  • 21173-2

    Photo of evaluation board

  • 21173-3

    Photo of evaluation board

EVB_SY21173FCC

The EVB_SY21173FCC is intended for evaluating 3A current and 60V maximum input voltage asynchronous step down regulator. The switching frequency is adjustable from 100kHz to 500kHz using an external resistor.

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12
SO8E 2022-05-20