© 1999 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

DUAL INPUT

LOW DROPOUT REGULATOR

EZ1580/EZ1581

EZ1582/EZ1583

February 26, 1999

3

(1) Unless otherwise specified, V

(2) Required to maintain regulation. Voltage set resistors R1, R2 are usually utilized for minimum load current.

(3) Current used to drive the output section; minimum value equals the standby current of the device.

(4) V

(5) 30ms.

(6) Over Temp (O.T.) = over specified operating junction temperature range.

(7) Minimum input/output voltage required to maintain 1% regulation.

ELECTRICAL CHARACTERISTICS

Test Conditions

(1)

Test Limits

Parameter

Symbol

V

CNTL

Volts

V

PWR

Volts

Amps

T

J

(6)

Min

Typ

Max

Units

Reference Voltage

V

REF

2.75

2.00

0.01

25°C

1.243

1.250

1.257

EZ1583

EZ1582

EZ1581

EZ1580

2.7 - 12

2.05 - 5.5

0.01 - 1.5

0.01 - 3.0

0.01 - 5.0

0.01 - 7.0

O.T.

1.237

1.250

1.263

V

Line Regulation

REG

(LINE)

2.5 - 12

1.75 - 5.5

0.01

O.T.

1.0

3.0

mV

Load Regulation

EZ1583

EZ1582

EZ1581

EZ1580

REG

(LOAD)

2.75

2.1

0.01 - 1.5

0.01 - 3.0

0.01 - 5.0

0.01 - 7.0

O.T.

1.0

5.0

mV

Minimum Load Current

(2)

I

O

53.3

O.T.

5.0

10

mA

Control Pin Current

(3)

EZ1583

EZ1582

EZ1581

EZ1580

I

C

2.75

2.05

1.5

3.0

5.0

7.0

O.T.

6.0

30

33

60

120

mA

Adjust Pin Current

I

ADJ

2.75

2.05

0.01

O.T.

50

120

µA

Current Limit

EZ1583

EZ1582

EZ1581

EZ1580

I

CL

2.75

2.05

O.T.

1.6

3.1

5.1

7.1

A

Ripple Rejection

(4)

EZ1583

EZ1582

EZ1581

EZ1580

R

A

3.75

3.75

0.75

1.5

2.5

3.5

25°C

60

80

dB

Thermal Regulation

(5)

REG

(THERMAL)

0.002

0.02

%/W

Dropout Voltage

(7)

Minimum V

CNTL

EZ1583

EZ1582

EZ1581

EZ1580

V

2.05

1.5

3.0

5.0

7.0

O.T.

1.00

1.05

1.10

1.15

1.15

1.18

1.25

1.30

V

Dropout Voltage

(7)

Minimum V

POWER

EZ1583

1.5

25°C

O.T.

0.40

0.50

0.50

0.60

EZ1582

V

2.75

3.0

25°C

O.T.

0.40

0.50

0.50

0.60

V

EZ1581

5.0

25°C

O.T.

0.40

0.50

0.50

0.60

EZ1580

7.0

25°C

O.T.

0.54

0.70

0.62

0.80

NOTES