Altera Stratix - Voltage Divider Network; 1.5-V Regulator Circuits

14–10 Altera Corporation
Stratix Device Handbook, Volume 2 January 2005
Voltage Regulators
was published. There may be more regulators to choose from depending
on your design specification. Contact a regulator manufacturer for
availability.
Voltage Divider Network
Design a voltage divider network if you are using an adjustable output
regulator. Follow the controller or converter IC’s instructions to adjust
the output voltage.
1.5-V Regulator Circuits
This section contains the circuit diagrams for the voltage regulators
discussed in this chapter. You can use the voltage regulators in this
section to generate a 1.5-V power supply. See the voltage regulator data
sheet to find detailed specifications. If you require further information
that is not shown in the data sheet, contact the regulator’s vendor.
Table 14–5. Linear Technology 1.5-V Output Voltage Regulators
Voltage Regulator Regulator Type
Total Number of
Components
V
IN
(V) I
OUT
(A)
Special Features
LT1573 Linear 10 2.5 or 3.3 (1) 6–
LT1083 Linear 5 5.0 7.5 –
LT1084 Linear 5 5.0 5 –
LT1085 Linear 5 5.0 3 Inexpensive solution
LTC1649 Switching 22 3.3 15 Selectable output
LTC1775 Switching 17 5.0 5 –
Note to Table 14–5:
(1) A 3.3-V V
IN
requires a 3.3-V supply to the regulator’s input and 2.5-V supply to bias the transistors.
Table 14–6. Elantec 1.5-V Output Voltage Regulators
Voltage Regulator Regulator Type
Total Number of
Components
V
IN
(V) I
OUT
(A)
Special Features
EL7551C Switching 11 5.0 1 –
EL7564CM Switching 13 5.0 4 –
EL7556BC Switching 21 5.0 6 –
EL7562CM Switching 17 3.3 or 5.5 2 –
EL7563CM Switching 19 3.3 4 –