LOW DROPOUT

LOW DROPOUT

LOW DROPOUT

LOW DROPOUT

LOW DROPOUT

REGULA

REGULA

REGULA

REGULA

REGULAT

TT

T

TOR

OR

OR

OR

OR

AS1185

AustinSemiconductor,Inc.reservestherighttochangeproductsorspecificationswithoutnotice.

3

AS1185

Rev. 1.1 6/05

Austin Semiconductor, Inc.

PARAMETER

MIN

TYP

MAX

UNITS

Reference Voltage (@ FB Pin)

2.37

V

0.3

±1

%

P < 25W

9

•

1

±2.5

%

Feedback Pin Bias Current

•

0.7

2.0

µA

0.20

0.37

V

0.67

1.00

V

Load Regulation

7

0.05

0.3

%

Line Regulation

7

0.002

0.01

%/V

4.0

V

4.3

V

3.3

3.6

4.2

A

•

3.1

4.4

A

•

2.0

3

4.2

A

•

1.0

1.7

2.6

A

•

0.2

0.4

1.0

A

External Current Limit Programming

Constant

11

•

15k

A•W

A

•

A

Quiescent Supply Current

5

•

2.5

3.5

mA

10

•

25

40

mA/A

•

10

25

mA/A

REF Pin Shutoff Current

•

0.4

2

7

µA

Thermal Regulation

(See Applications Information)

8

0.005

0.014

%/W

Reference Voltage Temperature

Coefficient

8

0.003

0.01

%/°C

External Current Limit Error

Supply Current Change with Load

CONDITION

Rference Voltage Tolerance (@ FB Pin)

2

Internal Current Limit

(See Graph for Guaranteed Curve)

8, 12

Dropout Voltage

3

Minimum Input Voltage

operating temperature range, otherwise specifications are at T

A

= 25°C. Adjustable version,

V

IN

= 7.4V, V

OUT

= 5V, I

OUT

= 1mA, R

LIM

= 5.6k, unless otherwise noted.