Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- THERMAL INFORMATION
- RECOMMENDED OPERATING CONDITIONS
- ELECTRICAL CHARACTERISTICS
- DEVICE INFORMATION
- TYPICAL CHARACTERISTICS
- APPLICATION INFORMATION
- VDDQ Switch Mode Power Supply Control
- VREF and REFIN, VDDQ Output Voltage
- Soft-Start and Powergood
- Power State Control
- MODE Pin Configuration
- Discharge Control
- D-CAP™ Mode
- D-CAP2™ Mode Operation
- Light-Load Operation
- VTT and VTTREF
- VDDQ Overvoltage and Undervoltage Protection
- VDDQ Out-of-Bound Operation
- VDDQ Overcurrent Protection
- VTT Overcurrent Protection
- V5IN Undervoltage Lockout Protection
- Thermal Shutdown
- External Components Selection
- Layout Considerations
10
13
PGND
SW
TPS51916
OC
ZC
XCON
15
VBST
12 V5IN
PWM
9
REFIN
TRIP
Delay
20 PGOOD
Control Logic
UDG-12074
10 ?A
+
+
V
REFIN
+20%
+
+
8
VDDQSNS
+
+
18
14 DRVH
11 DRVL
t
ON
One-
Shot
UV
OV
V
REFIN
–32%
16S5
Soft-Start
+
NOC
+
8 R
6VREF
R
7GND
17S3
5VTTREF
1VTTSNS
4 VTTGND
3 VTT
+
+
+
+
2 VLDOIN
7 R
R
VTT Discharge
VTTREF Discharge
Mode
Selection
15 ?A
19 MODE
V
REFIN
+8/16 %
V
REFIN
–8/16 %
+
+
VDDQ
Discharge
V5OK
+
4.4 V/3.9 V
UVP
OVP
G
+
1.8 V
Σ
D-CAP: Open,
D-CAP2: Short
TPS51916
SLUSAE1D –DECEMBER 2010–REVISED JUNE 2012
www.ti.com
FUNCTIONAL BLOCK DIAGRAM
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