General Description

The SY20466/SY20466A high-efficiency

synchronous Boost regulator has an input voltage

range of 1.8V to 5.25V and can output an output

voltage up to 5.5V. The device uses a NMOS

MOSFET for the main switch and a PMOS for the

synchronous switch. The output is disconnected from

the input during shutdown mode and features

programmable output-current limit using the ILIM pin.

The SY20466/SY20466A is available in a compact

QFN2mmx2mm-10 package.

Applications

Single-cell Lithium or Dual-Cell Nickel BatteryPowered Devices (MP3 players, PDAs, etc.)

Features

 1.8V Minimum Input Voltage

 Adjustable Output Voltage from 2.5V to 5.5V

 6A Peak Current Limit

 Input Undervoltage Lockout

 Quiescent Current: 27 µA (typ.)

 Shutdown Current: 0.1 µA (typ.)

 Load Disconnect During Shutdown

 Output Overvoltage Protection

 Input Battery Voltage Monitor

 Low RDS(ON) for Internal Switches at 5.0V

Output: 20mΩ Main, 40mΩ Synchronous

 Automatic Output Discharge at Shutdown:

 SY20466: Automatic Output Discharge

Function

 SY20466A: No Output Discharge

Function

 Compact Package: QFN2mmx2mm-10