Texas Instruments TPS40004DGQR

Description
The TPS4000x are controllers for low-voltage, non-isolated synchronous buck regulators. These controllers drive an N-channel MOSFET for the primary buck switch and an N-channel MOSFET for the synchronous rectifier switch, achieving high-efficiency power conversion. The device controls delays from main switch off to rectifier turn-on and from rectifier turn-off to main switch turn-on to minimize diode losses in the synchronous rectifier with TI's proprietary Predictive Gate Drive technology. This loss reduction increases efficiency, allowing for smaller FETs or reduced heat sinking.

Features
Operating Input Voltage: 2.25 V to 5.5 V
Output Voltage: As low as 0.7 V
1% Internal 0.7 V Reference
Predictive Gate Drive N-Channel MOSFET Drivers for Higher Efficiency
Externally Adjustable Soft-Start and Overcurrent Limit
Source-Only Current or Source/Sink Current Versions for Starting Into VOUT Pre-Bias
10-Lead MSOP PowerPad Package for Higher Performance
Thermal Shutdown
Internal Bootstrap Diode
Fixed-Frequency, Voltage-Mode Control
TPS40000/1/4: 300 kHz
TPS40002/3/5: 600 kHz

Applications
Networking Equipment
Telecom Equipment
Base Stations
Servers
DSP Power
Power Modules