Datasheet

FUNCTIONAL BLOCK DIAGRAMS
Servo
Error
Amp
Ref
27 kW
8 kW
Current
Limit
Thermal
Protection
Bandgap
NR
OUT
R
1
R
2
EN
GND
IN
R
1
+ R
2
= 80 kW
4-MHz
Charge Pump
V
O
1.2 V
1.5 V
1.8 V
2.5 V
2.8 V
3.0 V
3.3 V
R
1
Short
23.2 kW
28.0 kW
39.2 kW
44.2 kW
46.4 kW
52.3 kW
R
2
Open
95.3 kW
56.2 kW
36.5 kW
33.2 kW
30.9 kW
30.1 kW
Standard 1% Resistor Values for
Common Output Voltages
NOTE: V
OUT
= (R
1
+ R
2
)/R
2
× 1.204;
R || R
1 2
≅19 kW for best
accuracy.
Servo
Error
Amp
Ref
Current
Limit
Thermal
Protection
Bandgap
OUT
FB
R
1
R
2
EN
GND
IN
80 kW
8 kW
27 kW
4-MHz
Charge Pump
TPS73719-Q1
TPS73733-Q1
SBVS123 – DECEMBER 2008 ........................................................................................................................................................................................... www.ti.com
Figure 1. Fixed Voltage Version
Figure 2. Adjustable Voltage Version
4 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s) :TPS73733-Q1