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SY20311AIC (SY8831AIC)

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High Efficiency 1.5MHz, Dual 1A Synchronous Step Down Regulator
Datasheet
SY20311AIC High Efficiency 1.5MHz, Dual 1A Synchronous Step Down Regulator Datasheet
Part number SY20311AIC
Channel(#) 2
Vin (min) (V) 2.5
Vin (max) (V) 5.5
Switching frequency (min)(kHz) 1500
Switching frequency (max)(kHz) 1500
Vout (min) (V) 0.6
Vout (max) (V) 5
Iout (max) (A) 1
Vout2 (min)(V) 0.6
Vout2 (max )(V) 5
Iout2 (max)(A) 1
Vref accuracy (±%) 2
Vout accuracy(±%)
Control mode Clock+Ipeak
Duty cycle (max)(%) 100
Operation mode Auto PFM
Iq (typ) (uA) 55
Features Interleave operation, Output discharge
Package TSOT23-8
Operating temperature range(°C) -40 to 125
Functional safety category

 

  • 2.5V to 5.5V Input Voltage
  • 1.5MHz Switching Frequency
  • 180° Out of Phase Operation
  • Output Current: 1A per Channel
  • Quiescent Current: Typical 55µA for both Channels
  • Low RDS(ON) for Internal Switches (PFET/NFET): 260mΩ/180mΩ
  • Internal Soft-start
  • 100% Dropout Operation
  • RoHS Compliant and Halogen Free
  • Compact Package: TSOT23-8

 

The SY20311 is a dual output, high efficiency 1.5MHz synchronous step down DC/DC regulator capable of delivering up to 1A output current for each output channel. The SY20311 operates over a wide input voltage range from 2.5V to 5.5V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.

Evaluation Board

  • 20311-1

    Photo of evaluation board

  • 20311-2

    Photo of evaluation board

  • 20311-3

    Photo of evaluation board

  • 20311-4

    Photo of evaluation board

  • 20311-5

    Photo of evaluation board

EVB_SY20311AIC

The EVB_SY20311AIC is intended for evaluating 1.5MHz, Dual 1.0A, synchronous Buck regulator. It features Enable controls.

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12