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SY21053FCC (SY89001FCC)

Production
High Efficiency, 1A, 100V Input Synchronous Step Down Regulator
Datasheet
SY21053FCC High Efficiency, 1A, 100V Input Synchronous Step Down Regulator Datasheet
Part number SY21053FCC
Channel(#) 1
Vin (min) (V) 7
Vin (max) (V) 100
Switching frequency (min)(kHz) 200
Switching frequency (max)(kHz) 600
Vout (min) (V) 1.225
Vout (max) (V) 24
Iout (max) (A) 1
Vout2 (min)(V)
Vout2 (max )(V)
Iout2 (max)(A)
Vref accuracy (±%) 2(over temperature)
Vout accuracy(±%)
Control mode COT+Ripple
Duty cycle (max)(%) 75
Operation mode FCCM
Iq (typ) (uA)
Features
Package SO8E
Operating temperature range(°C) -40 to 125
Functional safety category
  • Low RDS(ON) for Internal Switches (Top/Bottom): 500mΩ/240mΩ
  • 7-100V Input Voltage Range
  • 1A Output Current Capability
  • Constant On-time Control
  • Instant PWM Architecture to Achieve Fast Transient Responses
  • Programmable Switching Frequency Range: 200kHz ~600kHz
  • 2ms Internal Soft-start Limits the Inrush Current
  • Precise ±2% 1.225V Reference over -40°C to +125°C Temperature Range
  • Cycle-by-cycle Peak Current Limit
  • Over Temperature Protection with Auto Recovery
  • RoHS Compliant and Halogen Free
  • Compact Package SO8E

Evaluation Board

  • 21053-1

    Photo of evaluation board

  • 21053-2

    Photo of evaluation board

  • 21053-3

    Photo of evaluation board

EVB_ SY21053FCC

The EVB_SY21053FCC is intended for evaluating fast response, 1A, 100V input synchronous Buck regulator.   

Technical Documentation

Title Date
Silergy_Catalog_Q3_2026 2026-11-04
SO8E 2022-05-20