© 2000 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

VERY LOW DROPOUT 1.5 AMP

REGULATOR WITH ENABLE

SC1565

October 3, 2000

3

ELECTRICAL CHARACTERISTICS

Unless specified: V

Adjustable Option (V

Fixed Options (V

Values in bold apply over the full operating temperature range.

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Dropout Voltage

(2)

V

D

I

2.5

10

mV

20

I

115

300

mV

400

I

225

400

mV

500

I

350

500

mV

600

Minimum Load Current

(3)

I

O

V

1

10

µA

Current Limit

I

CL

1.50

2.50

3.50

A

ADJ

Reference Voltage

(1)

V

REF

V

1.188

1.200

1.212

V

1.176

1.224

Adjust Pin Current

(4)

I

ADJ

V

10

50

nA

Adjust Pin Threshold

(5)

V

TH(ADJ)

0.10

0.20

0.40

V

EN

Enable Pin Current

I

EN

V

1.5

10

µA

Enable Pin Threshold

V

IH

V

1.8

V

V

IL

V

0.4

OVER TEMPERATURE PROTECTION

High Trip level

T

HI

170

°C

Hysteresis

T

HYST

20

°C

NOTES:

(1) Low duty cycle pulse testing with Kelvin connections required.

(2) Defined as the input to output differential at which the output voltage drops to 1% below the value measured at

a differential of 0.7V.

(3) Required to maintain regulation. Voltage set resistors R1 and R2 are usually utilized to meet this requirement.

Adjustable versions only.

(4) Guaranteed by design.

(5) When V

error amplifier and connects V