Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- DISSIPATION RATINGS
- RECOMMENDED OPERATING CONDITIONS
- ELECTRICAL CHARACTERISTICS
- DEVICE INFORMATION
- TYPICAL CHARACTERISTICS
- APPLICATION INFORMATION
- PWM Operations
- Adaptive On-Time Control and PWM Frequency
- Loop Compensation
- Ramp Signal
- Light Load Condition in Auto-Skip Operation
- Out-of-Audio™ Light-Load Operation
- Enable and Soft Start
- VREG5/VREG3 Linear Regulators
- VREG5 Switch Over
- VREG3 Switch Over
- Powergood
- Output Discharge Control
- Low-Side Driver
- High-Side Driver
- Current Protection
- Overvoltage and Undervoltage Protection
- UVLO Protection
- Thermal Shutdown
- External Parts Selection
- Layout Considerations
- Application Circuit
- Revision History

TPS51123
www.ti.com
SLUS890E –DECEMBER 2008–REVISED JANUARY 2013
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
PARAMETER MIN TYP MAX UNIT
Supply voltage VIN 5.5 28
VBST1, VBST2 -0.1 34
VBST1, VBST2 (wrt LLx) -0.1 5.5
Input voltage range
EN0, ENC, TRIP1, TRIP2, VFB1, VFB2, VO1, VO2, TONSEL,
-0.1 5.5
SKIPSEL
V
DRVH1, DRVH2 -0.8 34
DRVH1, DRVH2 (wrt LLx) -0.1 5.5
Output voltage range LL1, LL2 -1.8 28
VREF, VREG3, VREG5 -0.1 5.5
PGOOD, DRVL1, DRVL2 -0.1 5.5
T
A
Operating free-air temperature -40 85 °C
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