Datasheet Texas Instruments TPS40040DRBRG4 — 数据表

TPS40040, TPS40041
www.ti.com SLUS700D – MARCH 2006 – REVISED DECEMBER 2007 LOW PIN COUNT, LOW VIN (2.5 V TO 5.5 V) SYNCHRONOUS BUCK DC-TO-DC
CONTROLLER WITH ENABLE
FEATURES APPLICATIONS 1 23 2.25-V to 5.5-V Input
Output Voltage from 0.6 V to 90% of VIN
High-Side Drive for N-Channel FET
Supports Pre-Biased Outputs
Adaptive Anti-Cross Conduction Gate Drive
1%, 0.6-V Reference
Two Fixed Switching Frequency Versions,
TPS40040 (300 kHz) and TPS40041 (600 kHz)
Three Selectable Short Circuit Protection
Levels of 105 mV, 180 mV and 310 mV
Hiccup Restart from Faults
Voltage Mode Control
Active Low Enable
Thermal Shutdown Protection at 145C
8-Pin, 3-mm x 3-mm SON with Ground
Connection to Thermal Pad Point of Load
Telecommunications
DC to DC Modules
Set Top Boxes CONTENTS
Device Ratings 2 Electrical Characteristics 3 Device Information 8 Application Information 10 Design Examples 19 Additional References 32 DESCRIPTION …