4

 2005 Semtech Corp.

www.semtech.com

POWER MANAGEMENT

SC190

Parameter

Symbol

Conditions

Min

Typ

Max

Units

UVLO Threshold (lower)

V

UVL

2.4

2.5

2.6

V

UVLO Hysteresis

V

UVLHYS

50

mV

Thermal Shutdown

T

HI

145

°

C

Thermal Shutdown

Hysteresis

T

HYSR

10

Logic Input High

VIH

EN, SYNC/PWM, MODE,

VID0, VID1

1.6

V

Logic Input Low

VIL

EN, SYNC/PWM, MODE,

VID0, VID1

0.6

V

Logic Input Current High

I

IH

EN, SYNC/PWM, MODE,

VID0, VID1

-2

0.1

2

µA

Logic Input Current Low

I

IL

EN, SYNC/PWM, MODE,

VID0, VID1

-2

0.1

2

µA

Unless otherwise noted: V

Use of standard ESD handling precautions is required.

Notes:

(1) Line regulation is tested with 2.7V < VIN < 5.5V and the following output voltage settings:

· SC190A - 1.8V

· SC190B - 1.8V

· SC190D - 1.4V

(2) Line regulation is tested with 3.7V < VIN < 5.5V and VOUT = 2.6V for the SC190C version. The input voltage range is reduced due to the

higher output voltage settings of the SC190C. This also forces the specification range to grow wider because it is expressed as a percentage

of the input voltage range.

(3) Tested at I

(4) I

Electrical Characteristics (Cont.)