![]() |
![]() |
![]() |
 The requirements of the present computer market are moving towards high current very low drop, Voltage Regulators in space saving packages. Motherboard manufactures are searching for solutions where greater power handling capability is offered in SMD packages.
The LDO family has taken a significant role in the main data storage building block, thanks to their bipolar technology that permits a fast response time.
The latest generation of motherboards require a high output current value in a small surface mounting package, such as the DPAK. This package with its three terminal configuration offers the best compromise in terms of power dissipation and space.
|
|
|
Pin No.
|
Symbol
|
Name and Function
|
| 1 |
ADJ/GND* |
ADJ or Ground Pin |
| 2 |
OUT |
Output Pin |
| 3 |
IN |
Input Pin |
| *for fixed version |
 |
Output current range: from 0.8A to 5A
|
|
Wide output voltage:1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 3.6V, 5.0V, 8.0V, 9.0V, 12V and adjustable versions also available
|
|
Typical dropout voltage 1.3V at the highest current value of 5A |
|
Wide operating temperature range : -40°C to 125°C
|
With the current product range we are able to meet most design-in requirements. A more complete product scenario is show in the table below.
Low Drop, High Current Voltage Regulator Product Range |
ST’s Low Drop family ranges from the well known LD1117 to the newly released KD1084.
|
Performances
|
LD1117
|
LD1117A
|
LD1086
|
LD1085C*
|
KD1084*
|
|
VOUT Tolerance 25°C (-40°C to 125°C)
|
1%
(2%) |
2%
(4%) |
1%
(2%) |
2%
(3%) |
2%
(3%) |
|
VIN (max)
|
15V |
10V |
30V |
30V |
20V |
|
IOUT
|
0.8A |
1A |
1.5 |
3A |
5A |
|
VOUT
|
2.5, 2.85, 3.0, 3.3, 5.0V, ADJ |
1.8, 2.5, 2.85, 3.3, 5V, ADJ |
1.8, 2.5, 2.85, 3.3, 3.6, 5.0, 8.0, 9.0, 12V, ADJ |
1.8, 2.5, 2.85, 3.3, 3.6, 5.0, 8.0, 9.0,12V ADJ |
1.8, 2.5, 2.85, 3.3, 3.6, 5.0, 8.0, 9.0,12V ADJ |
|
Dropout Voltage
|
1.1V (0.8A) |
1.15V (1A) |
1.3V (1.5A) |
1.3V (3A) |
1.3V (3A) |
|
Quiescent Current
|
5mA |
5mA |
5mA |
5mA |
5mA |
|
COUT (min)
|
10µF |
10µF |
10µF |
10µF |
10µF |
| *High accuracy is available (LD1085 and LD1084) in other package solutions |
|
![]() |
![]() |
![]() |
|
|
|
|
