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
TPS51123RGE
(QFN-24)
VO1
PGOOD
VO2
VREG3
VBST1
DRVL1
LL1
DRVH1
VBST2
DRVH2
LL2
DRVL2
EN0
TRIP2
VFB2
VREF
TONSEL
VFB1
TRIP1
SKIPSEL
GND
VIN
ENC
VREG5
2
3
4
5
6
7 8
9 10
11
1
12
13
14
15
16
17
18
24 23
22 21
20 19
TPS51123
SLUS890E –DECEMBER 2008–REVISED JANUARY 2013
www.ti.com
QFN PACKAGE (TOP VIEW)
Functional Block Diagram
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