• Qualified for automotive application

• EMI Reduction with Switching Node Ringing-free

• Pulse Skipping Mode PSM with 22uA Quiescent

  Current in Light Load Condition

• 3.8V-32V Wide Input Voltage Range

• Up to 2A Continuous Output Load Current

• 0.8V ±1% Feedback Reference Voltage

• Fully Integrated 140mΩ Rdson High Side MOSFET

  and 70mΩ Rdson Low Side MOSFET

• 1uA Shut-down Current

• 80ns Minimum On-time

• Precision Enable Threshold for Programmable

  UVLO Threshold and Hysteresis

• 4ms Built-in Soft Start Time

• Output Over Voltage Protection

• Thermal Shutdown Protection at 160°C

• Available in QFN2X3-9L Package

The SCT9321/SCT9322 is 2A synchronous buck

converters with up to 32V wide input voltage range,

which fully integrates an 140mΩ high-side MOSFET

and a 70mΩ low-side MOSFET to provide high

efficiency step-down DCDC conversion. The

SCT9321/SCT9322 adopts peak current mode control.

The SCT9321/SCT9322 supports the Pulse Skipping

Modulation (PSM) with typical 22uA Ultra-Low

Quiescent.

The SCT9321/SCT9322 is an Electromagnetic

Interference (EMI) friendly buck converter with

implementing optimized design for EMI reduction. The

converter has proprietary designed gate driver scheme

to resist switching node ringing without sacrificing

MOSFET turn-on and turn-off time, which further

erases high frequency radiation EMI noise caused by

the MOSFETs hard switching.

The SCT9321/SCT9322 offers output over-voltage

protection, cycle-by-cycle peak current limit, and

thermal shutdown protection. The device is available in

a low-profile 3x2mm QFN2X3-9L package.