TPS40190
www.ti.com SLUS658C – JULY 2005 – REVISED JULY 2012 LOW PIN COUNT SYNCHRONOUS BUCK CONTROLLER
Check for Samples: TPS40190 FEATURES 1 Input Operating Voltage Range: 4.5 V to 15 V
Reference 0.591 V В±1%
Voltage Mode Control
Internal 5-V Regulator For Internal
Housekeeping, Driver Power and Light
External Loads
Selectable Short-Circuit Protection Thresholds
Pre-Bias Ouput Safe
Fixed Switching Frequency of 300 kHz
Internal Soft-Start
Small 3 mm Г— 3 mm, 10-Pin SON Package
Bootstrapped Drivers for N-Channel MOSFET
Adaptive Anti-Cross Conduction
Internal Bootstrap Diode
1.2-A Drivers for Decreased Switching Loss APPLICATIONS DESCRIPTION
The TPS40190 is a cost-optimized synchronous buck
controller that operates from 4.5 V to 15 V nominally,
and implements a fixed frequency voltage mode
power supply. The controller uses an adaptive anticross conduction scheme to prevent both the highside and the rectifier MOSFET to be turned on at the
same time, preventing shoot through current in the
two MOSFETs. …
