SY20428ABC (SY7080ABC)

0.9V Minimum Input and 4V Maximum Output 1.8A Peak Current Synchronous Boost with Output Disconnect

SY20428ABC 0.9V Minimum Input and 4V Maximum Output 1.8A Peak Current Synchronous Boost with Output Disconnect Datasheet

Parameters
Features
Description

Part number	SY20428ABC
Vin (min) (V)	0.9
Vin (max) (V)	4
Current limit (A)	1.8
Switching frequency (min)(kHz)
Switching frequency (max)(kHz)
Vout (min) (V)	4
Vout (max) (V)	4
Vref accuracy (±%)	±3%
Vout accuracy(±%)
Duty cycle (max)(%)
Iq (typ) (uA)
Features	Output Disconnect @Shutdown
Package	SOT23-6
Operating temperature range(°C)
Functional safety category

0.9V To 4V Wide Input Range
4V Max Output Voltage
1.8A Internal Switch
Up To 95% Efficiency
< 1ua Shut Down Current
1.2mhz Switching Frequency
Minimum On Time: 80ns Typical
Minimum Off Time: 60ns Typical
Output Disconnect At Shutdown
Low R_DS(ON) (Main Switch/Synchronous Switch) At 3.3V Output: 90/200mΩ
Compact SOT23-6

Evaluation Board

Photo of evaluation board
Photo of evaluation board
Photo of evaluation board

EVB_SY20428ABC

EVB File

The EVB_SY20428ABC is intended for evaluating a high efficiency synchronous boost regulator SY20428 that converts down to 0.9V input into up to 4V output voltage.

Technical Documentation

Title	Date
Silergy_Catalog_Q3_2026	2026-11-04

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