2

 2005 Semtech Corp.

www.semtech.com

POWER MANAGEMENT

SC190

Exceeding the specifications below may result in permanent damage to the device or device malfunction. Operation outside of the parameters specified in the

Electrical Characteristics section is not implied.

Parameter

Symbol

Maximum

Units

VIN Input

V

IN

-0.3 to 7

V

Logic Inputs (SYNC/PWM,

EN, MODE, VID0, and VID1)

V

N

-0.3 to 7

V

LX Voltage

V

LX

-1 to BP +1

V

VOUT Voltage

V

OUT

-0.3 to VIN + 0.3

V

BP Voltage

V

BP

VIN -0.3 to VIN + 0.3

V

Thermal Impedance Junction to Ambient

θ

JA

*31

°

C/W

VOUT Short Circuit to GND

t

SC

Continuous

s

BP Current

I

BP

0.8

A

LX Current

I

LX

+1.2

A

Storage Temperature

T

S

-65 to +150

°

C

Junction Temperature

T

JC

+150

°

C

Peak IR Reflow Temperature

T

LEAD

260

°

C

* Tied to PCB with 1 square inch, 2 ounce copper.

Unless otherwise noted: V

Use of standard ESD handling precautions is required.

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Input Voltage Range

V

IN

V

2.7

5.5

V

V

2.9

5.5

V

Input Voltage Ripple

V

IN PK-PK

C

1

mV

Line Regulation

V

LINEREG

190A, B and D: see note (1)

-0.3

0.3

%/V

190C: see note (2)

-0.5

0.5

%/V

Load Regulation

V

LOADREG

I

0.002

%/mA

P-Channel On Resistance

R

DSP

I

0.3

Ω

N-Channel On Resistance

R

DSN

I

0.2

Ω

Start Up Time

T

START

I

1.25

ms

Absolute Maximum Ratings

Electrical Characteristics