DC Supply Voltage

Power Dissipation

Storage Temperature Range

Operating Juction Temperature Range

Parameter

Symbol

Ratings

Unit

V

-0.3 to 12

0~+150

-65~+150

Absolute Maximum Ratings

C

o

C

o

Internally Limited

Pin Descriptions

Elektronische Bauelemente

http://www.SeCoSGmbH.com/

Any changing of specification will not be informed individual

01-Jun-2002 Rev. A

Page

2 of 4

Name

I/O

PIN#

FUNCTION

Adj (GND)

1

Adjustable (Ground only for fixed mode)

Vout

O

2

The output of the regulator. A minimum of 10uF capacitor must be connected from this pin to

ground to insure stability.

Vin

I

3

The input pin of regulator .Typically a large storage capacitor is connected from this pin to ground

to insure that the input vol

tage does not sag below the min. dropout voltage during the load

tage does not sag below the minimum dropout voltage during the load

transient response .This pin must always be 1.5

V higher than Vout in order for the device to

V higher than Vout in order for the device to

regulate properly.

Electrical Characteristics

Parameter

Conditions

MIN

TYP

MAX

UNIT

Reference Voltage

S

E1085-ADJ

1.225

1.250

1.275

V

S

E1085-1.5

1.470

1.500

1.530

V

S

E1085-1.8

1.764

1.800

1.836

V

S

E1085-2.5

2.450

2.500

2.550

V

S

E1085-3.3

3.235

3.300

3.365

V

Output Voltage

S

E1085-5.0

4.900

5.000

5.100

V

Line Regulator

S

E1085-XXX

Io=10mA, Vout+1.5<Vin<12

-

-

0.2

%

S

E1085ADJ

-

-

1

%

S

E1085-1.5

-

12

15

mV

S

E1085-1.8

-

15

18

mV

S

E1085-2.5

-

20

25

mV

S

E1085-3.3

-

26

33

mV

Load Regulation

S

E1085-5.0

-

40

50

mV

Dropout Voltage

(Vin-Vout)

S

E1085-XXX

Io=3A( Vout=1% Vout)

-

1.3

1.4

V

Current Limit

S

E1085-XXX

Vin-Vout=5V

3.1

-

-

A

Minimum Load Current SE1085-XXX

0

-

5

10

mA

Thermal Regulation

-

0.008

0.04

%/W

Ripple Rejection

S

E1085-XXX

Vin=Vout+3V

-

60

70

dB

Temperature Stability

Io=10mA

-

0.5

-

%

Thermal Resistance

Junction–to-Ambient

(No heat sink ;No air flow)

-

83

-

/W

Thermal Resistance

Junction-to-Case

Control Circuitry/Power Transistor

-

0.65/2.7

-

/W

Note 1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured

at a constant junction Temperature by low duty cycle pulse testing. Load regulation is measured at the output lead =1/18” from the

package.

Note 2: Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the

difference in input and output and the output current. Guaranteed maximum power dissipation will not be available over the full

input/output range.

Note 3: Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential the

device is guaranteed to regulate if the output current is greater than 10mA.

SE1085

3A Low Dropout Positive

Adjustable or Fixed-Mode Regulator