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
ENC (5 V/div)
V
OUT1
(2 V/div)
PGOOD (5 V/div)
ENC (5 V/div)
V
OUT2
(2 V/div)
PGOOD (5 V/div)
V
OUT1
(100mV/div)
I
IND
(5A/div)
I
OUT1
(5A/div)
V
OUT2
(100mV/div)
I
IND
(5A/div)
I
OUT2
(5A/div)
TPS51123
www.ti.com
SLUS890E –DECEMBER 2008–REVISED JANUARY 2013
TYPICAL CHARACTERISTICS (continued)
5-V Load Transient Response 3.3-V Load Transient Response
Figure 28. Figure 29.
5-V Startup Waveforms 3.3-V Startup Waveforms
Figure 30. Figure 31.
Copyright © 2008–2013, Texas Instruments Incorporated Submit Documentation Feedback 17
Product Folder Links: TPS51123