SC1151

© 1998 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA

PROGRAMMABLE DC/DC CONTROLLER

FOR ADVANCED MICROPROCESSORS

March 11, 1998

2

NOTES:

(1) Low output currents, below the continuous conduction threshold will cause an increase in output voltage beyond

the load regulation limit. For Application circuit 16935F see the regulation curve on sheet 5.

(2) All VID codes not specifically listed here are invalid and cause shutdown exactly as if the shutdown pin had been

asserted. xxxxx refers to any valid VID code.

ELECTRICAL CHARACTERISTICS

Unless specified: V

PARAMETER

CONDITIONS

VID

43210

MIN

TYP

MAX

UNITS

Output Voltage

(2)

I

00101 1.782 1.800 1.818

V

00100 1.832 1.850 1.868

00011 1.881 1.900 1.919

00010 1.931 1.950 1.969

00001 1.980 2.000 2.020

00000 2.030 2.050 2.070

11111 1.980 2.000 2.020

11110 2.079 2.100 2.121

11101 2.178 2.200 2.222

11100 2.277 2.300 2.323

11011 2.376 2.400 2.424

11010 2.475 2.500 2.525

11001 2.574 2.600 2.626

11000 2.673 2.700 2.727

10111 2.772 2.800 2.828

10110 2.871 2.900 2.929

10101 2.970 3.000 3.030

10100 3.069 3.100 3.131

10011 3.168 3.200 3.232

10010 3.267 3.300 3.333

10001 3.366 3.400 3.434

10000 3.465 3.500 3.535

Load Regulation

I

(1)

xxxxx

1

%

Line Regulation

xxxxx

0.5

%

UV Lockout

xxxxx

4.2

V

Current Limit Voltage

xxxxx

60

70

80

mV

Oscillator Frequency

xxxxx

180

200

220

kHz

Oscillator Max Duty Cycle

xxxxx

90

95

%

DH Sink/Source Current

BST - DH = 4.5V, DH - PGND = 2V

xxxxx

1

A

Output Voltage Tempco

xxxxx

65

ppm/