SC1406

© 1999 SEMTECH CORP.

652 MITCHELL ROAD

NEWBURY PARK CA 91320

PORTABLE PENTIUM

POWER SUPPLY CONTROLLER

PRELIMINARY - August 27, 1999

6

Pentium is a registered trademark of Intel Corporation

ELECTRICAL CHARACTERISTICS (CONT.)

Unless specified: -0 < T

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP MAX UNIT

LINEAR REGULATOR CONTROLLERS

1.5V Linear Regulator Controller

Input Bias Current

I

LR15

V

1

mA

Output Voltage

C

or 150µF, 45m

Ω ESR max

Capacitance tolerance = 20%

V

O_1.5,

Imin =

0.1mA

I

I

1.47 1.50

1.54

V

Base Drive Output Current

I

BASE_1.5

@ 25°C

10

120

mA

2.5V Linear Regulator Controller

Input Bias Current

I

LR25

V

1

mA

Output Voltage

C

ESR range = 1m

Ω − 30mΩ

Capacitance tolerance = 20%

V

O_2.5,

Imin = 0A

Imax=0.1A

I

I

2.45 2.50

2.55

V

Base Drive Output Current

I

BASE_2.5

3.5

20

mA

Linear Regulator Soft Start (LRSS)

Linear Reg Soft-Start Current

I

LRSS

Charge Current, V

-0.6

-1

-1.4

µA

Discharge Current, V

EN is low or in UVLO

0.3

1

1.45

mA

Enable Threshold

V

SSLR_EN

150

400

mV

Soft Start Termination Threshold

V

TH_LRSS

1.53 1.70

1.87

V

Voltage Clamp (VCIN, VCOUT, VCBYP)

Input Voltage

V

H_VCIN

0.95

1.5

1.60

V

Output Voltage

Imin = 10µA

V

H_VCOUT

R

tied to V

I

VCIN is open

0.8V

S

V

S

V

V

L_VCOUT

V

0.375

Progagation Delay**

T

pd

VCIN_VCOUT

R

C

VCIN steps from

0.175V to 1.50V and back.

Measured from 50% of VCIN step to

50% of VCOUT transient

10

ns

* Guaranteed by design.

**Guaranteed by characterization.