SY87004AWUS

5.5V, High Efficiency, Synchronous Boost Regulator with Bypass Mode

SY87004AWUS 5.5V, High Efficiency, Synchronous Boost Regulator with Bypass Mode Datasheet

Parameters
Features
Description

Part number	SY87004AWUS
Vin (min) (V)	1.9
Vin (max) (V)	5.5
Current limit (A)
Switching frequency (min)(kHz)	2200
Switching frequency (max)(kHz)	2200
Vout (min) (V)	2.85
Vout (max) (V)	5.5
Vref accuracy (±%)
Vout accuracy(±%)	1.5
Duty cycle (max)(%)
Iq (typ) (uA)	3
Features	Bypass mode,I2C,PFM/FCCM
Package	CSP1.65×1.65-16
Operating temperature range(°C)	-40 to 125
Functional safety category

Input Voltage Range: 1.9V to 5.5V
Program Output Range: 2.85V to 5.5V
Maximum Bypass Continuous Load Current :6A
Up to 95% Efficiency
Supports 0.9V signaling for SCL/SDA/EN Pins
Programmable Valley Inductor Current Limit and Output Voltage
I²C Configurable Auto Bypass Operation And Forced Bypass Mode
I²C configurable FCCM and PFM Modes
Low Operating Quiescent Current
Shutdown Current 0.1 µA (Typ.)
Load Disconnect During Shutdown
Compact Package CSP1.65×1.65-16
Moisture Sensitivity Level (MSL): 1

The SY87004A is a high efficiency, synchronous boost converter with bypass mode. The device is designed to operate in bypass mode by providing a low resistance path between the output and input when the input voltage is higher than the target voltage. It transition automatically into boost mode when the input voltage is lower than the desired output.

The SY87004A operates over a wide input voltage range from 1.9V to 5.5V and supports up to 6A maximum load current in bypass mode. Overtemperature, overcurrent, as well as output undervoltage and input overvoltage protections are provided reliable operation.

The device operation and parameters can be configured using the I2C bus.

Evaluation Board

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

EVB_SY87004AWUS

EVB File

The EVB_SY87004AWUS is intended for evaluating the 5.5V, high efficiency, synchronous, adaptive constant on time control, step-up boost regulator SY87004AWUS.

Technical Documentation

Title	Date
Silergy_Catalog_Q2_2026	2026-06-12

Similar Products

SY21218LABC

High Efficiency 1MHz, 2A Step Up Regulator

SY20466QMC

1.8V Minimum Input and 5. 5V Maximum Output 6A Peak Current Synchronous Boost with Output Disconnect

SY21306RAC

High Efficiency, 16V, 10A Synchronous Step Up Regulator