SC1406

© 1999 SEMTECH CORP.

652 MITCHELL ROAD

NEWBURY PARK CA 91320

PORTABLE PENTIUM

POWER SUPPLY CONTROLLER

PRELIMINARY - August 27, 1999

4

Pentium is a registered trademark of Intel Corporation

ELECTRICAL CHARACTERISTICS (CONT.)

Unless specified: -0 < T

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX UNITS

CORE CONVERTER CONTROLLER

Core Converter Soft Start Current

Core Converter Soft Start Current

I

SSCORE

Charge (Source) current

0.6

1

1.45

µA

Discharge (Sink) current

0.30

1

mA

V

Threshold

V

SSTERM

1.53

1.70

1.87

V

V

V

SSDIS

150

400

mV

VID DAC

VID Input Threshold

V

VID_IH

3.0V < V

0.7*V

CC

V

V

VID_IL

0.8

VID Input-Pull-up Current,VID (0-4)

I

VID

VID (0-4) = 00000...11111

6

40

µA

Output Voltage Accuracy

V

DAC_ERR

I

-0.85

+0.85

%

Settling Time*

t

pdVID_DAC

C

VID is set to change VCORE from

1.30V to 1.45V or 1.45V to 1.30V

35

µs

CORE Comparator (CMP, CMPREF, HYS, CO)

Input Bias Current

I

BCMP

V

±2

µA

Input Offset Voltage

V

CPM-

VCPMREF

V

±1.5

±3

mV

Hysteresis Setting Current

R

+2

I

CMPREF

R

±89

+100 +111

µA

R

+8+10 +12.5

Output Voltage

V

HCO

CMP<CMPREF

Load Impedance = 100k in

parallel with 10pF, V

2.5

V

V

LCO

CMP>CMPREF

Load Impedance = 100k in

parallel with 10pF, V

0.4

V

Propagation Delay Time**

Measured at device pins, from the

trip point to 50% of CO transition.

T

pd CMP-CO

V

step with +20mV, overdrive

T

T

20

30

ns

V

step with 20mV overdrive,

T

T

20

30

Output Rise/Fall Times**

Measured between 30% and 70%

points of CO transition

T

R

C

V

710

ns

T

F

R

710