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SY20111DQC (SY8081DQC)

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High Efficiency 2.5MHz, 1A Synchronous Step Down Regulator
Datasheet
SY20111DQC High Efficiency 2.5MHz, 1A Synchronous Step Down Regulator Datasheet
Part number SY20111DQC
Channel(#) 1
Vin (min) (V) 2.5
Vin (max) (V) 5.5
Switching frequency (min)(kHz) 2500
Switching frequency (max)(kHz) 2500
Vout (min) (V) 0.6
Vout (max) (V) 5
Iout (max) (A) 1
Vout2 (min)(V)
Vout2 (max )(V)
Iout2 (max)(A)
Vref accuracy (±%) 2
Vout accuracy(±%)
Control mode Clock+Ipeak
Duty cycle (max)(%) 100
Operation mode Auto PFM
Iq (typ) (uA) 40
Features Output discharge
Package DFN1.5×1.5-6
Operating temperature range(°C) -40 to 125
Functional safety category
  •      Low RDS(ON) for Internal Switches (top/bottom): 230mΩ/150mΩ
  •      2.5~5.5V Input Voltage Range
  •      High Switching Frequency 2.5MHz Minimizes the External Components
  •      Internal Soft-start Limits the Inrush Current
  •      100% Dropout Operation
  •      RoHS Compliant and Halogen Free
  •      Output Auto Discharge Function
  •      Compact Package: DFN1.5x1.5-6

SY20111 is a high efficiency 2.5MHz synchronous step down DC/DC regulator IC capable of delivering up to 1A output currents. It can operate over a wide input voltage range from 2.5V to 5.5V and integrate main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.

Evaluation Board

  • 20111-1

    Photo of evaluation board

  • 20111-2

    Photo of evaluation board

  • 20111-3

    Photo of evaluation board

EVB_ SY20111DQC

The EVB_ SY20111DQC is intended for evaluating 2.5MHz 1A, 2.5~5.5V input, 1.8V output synchronous buck regulator. It features Enable control, output voltage selection inputs.

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12