Datasheet Texas Instruments UCD7231RTJR — 数据表

Not Recommended for New Designs UCD7231
www.ti.com SLUS997 – NOVEMBER 2009 – REVISED JANUARY 2010 Digital Control Compatible Synchronous-Buck Gate Driver
With Current Sense and Fault Protection
Check for Samples: UCD7231 FEATURES 1 Dual High Current Drivers.
Full Compatibility with TI Fusion Digital Power
Supply Controllers, such as UCD91xx and
UCD92xx Families
Operational to 2 MHz Switching Frequency
High-Side FET and Output Current Limit
Protection with Independently Adjustable
Thresholds
Fast High-Side Over-Current Sense Circuit
with Fault Flag Output – Prevents Catastrophic
Current Levels on a Cycle by Cycle Basis
Differential High-Gain Current Sense Amplifier
Voltage Proportional to Load Current Monitor
Output
Wide Input Voltage Range: 4.7 V to 15 V
Operation to 2.2 V Input Supported with an
External 4.5-6.5 V Bias Supply
Onboard Regulated Supplies for Gate Drive
and Internal Circuits
Integrated Thermal Shutdown …