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SY21041CABC (SY8201CABC)

Production
High Efficiency Fast Response, 1A, 27V Input Synchronous Step Down Regulator
Datasheet
SY21041CABC High Efficiency Fast Response, 1A, 27V Input Synchronous Step Down Regulator Datasheet
Part number SY21041CABC
Channel(#)
Vin (min) (V) 4.5
Vin (max) (V) 27
Switching frequency (min)(kHz)
Switching frequency (max)(kHz)
Vout (min) (V) 0.6
Vout (max) (V)
Iout (max) (A) 1
Vout2 (min)(V)
Vout2 (max )(V)
Iout2 (max)(A)
Vref accuracy (±%) ±2%
Vout accuracy(±%)
Control mode
Duty cycle (max)(%)
Operation mode
Iq (typ) (uA)
Features
Package SOT23-6
Operating temperature range(°C)
Functional safety category
  •      Low RDS(ON) for Internal Switches (Top/Bottom): 350/150 mΩ
  •      4.5-27V Input Voltage Range
  •      Instant PWM Architecture to Achieve Fast Transient Responses
  •      Internal Soft-start Limits the Inrush Current
  •      2% 0.6V Reference
  •      RoHS Compliant and Halogen Free
  •      Compact Package: SOT23-6

The SY21041C develops a high efficiency synchronous step-down DC/DC converter capable of delivering 1A load current. The SY21041C operates over a wide input voltage range from 4.5V to 27V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.

 

The SY21041C always operates under continuous condition mode. Low output ripple and small inductor and capacitor size are achieved with 1.15MHz switching frequency.

Evaluation Board

  • 21041C-1

    Photo of evaluation board

  • 21041C-2

    Photo of evaluation board

  • 21041C-3

    Photo of evaluation board

EVB_SY21041CABC

The EVB_SY21041CABC is intended for evaluating fast response, 1A, 27V synchronous Buck regulator. It features Enable control, output voltage selection inputs. 

Technical Documentation

Title Date
Silergy_Catalog_Q3_2026 2026-11-04