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SY21576AVTS (SY70202AVTS)

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High Efficiency High Integration PMIC for SSD System
Datasheet
SY21576AVTS High Efficiency High Integration PMIC for SSD System Datasheet
Part number SY21576AVTS
Vin (min) (V) 2.8
Vin (max) (V) 3.7
Channel(#) 4 Chs Buck+2 Chs LDO
Application SSD
Features 4 Chs Buck and 2 Chs LDO,3.4MHz I2C,OVP/SCP/OTP,Auto PWM/PFM or forced PWM controlled
Package CSP2.6×3.6-36
• Wide Input Voltage Range
    - VIN = 2.8V to 3.7V
• Channel 1 Synchronous Buck:
    - 4A Maximum Output Current Capability.
    - 1.6V to 3.0V Programmable, 25mV step.
    - Bypass Mode or Buck Mode Selection.
• Channel 2 Synchronous Buck:
    - 2A Maximum Output Current Capability.
    - 0.9V to 2.0V Programmable, 10mV Step.
• Channel 3 Synchronous Buck:
    - 4A Maximum Output Current Capability.
    - 0.5V to 1.2V Programmable, 10mV Step.
• Channel 4 Synchronous Buck:
    - 2A Maximum Output Current Capability.
    - 0.9V to 2.0V Programmable, 50mV Step.
    - Buck Mode or LDO Mode Selection.
• Channel 5 LDO1:
    - 0.4A Maximum Output Current Capability.
    - 1.0V to 2.7V Programmable, 50mV step.
    - Bypass Mode or LDO Mode Selection.
• Channel 6 LDO2:
    - 0.4A Maximum Output Current Capability.
    - 1.0V to 2.7V Programmable, 50mV Step.
    - Bypass Mode or LDO Mode Selection.
• I2C Interface up to 3.4MHz 
• Auto PWM/PFM or Forced PWM Controlled by I2C Interface 
• Output Voltage Level of Each Channel Controlled by I2C Interface 
• Reliable Protections: 
    - Input/Output Over Voltage Protection(OVP) 
    - Short Circuit Protection (SCP) 
    - Over Temperature Protection (OTP) 
• Compact Package: CSP2.6mm×2.6mm-36

The SY21576A is an SSD PMIC which is composed of 4 synchronous Buck regulators and 2 independent LDOs. The Buck1, LDO1, and LDO2 can work on load switch mode and the Buck4 works on the LDO mode which are flexible configuration via GPIOx pins. 

The configurable options also include output voltage, startup time, system level sequencing, sleep mode, deep sleep mode, and operating mode etc. Each channel provides a wide range voltage to support DVS (Dynamic Voltage Scaling) by I2C interface. The Buck converters are designed to use very small size inductors. 

The SY21576A is available in a CSP 2.6mm × 2.6mm-36 package.

Evaluation Board

  • SY21576A_1

    Photo of evaluation board

  • SY21576A_2

    Photo of evaluation board

  • SY21576A_3

    Photo of evaluation board

  • SY21576A_4

    Photo of evaluation board

  • SY21576A_5

    Photo of evaluation board

  • SY21576A_6

    Photo of evaluation board

EVB_SY21576AVTS

EVB_SY21576AVTS is intended for evaluating 2.8V to 3.7V input voltage, high efficiency high integration PMIC for SSD system.

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12