2

© 2006 Semtech Corp.

www.semtech.com

SC250

PRELIMINARY

POWER MANAGEMENT

Electrical Characteristics

Unless otherwise noted: V

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Input Voltage Range

V

IN

2.7

5.0

V

V

V

OUT

V

0.25

0.3

0.35

V

V

3.23

3.3

3.37

V

V

V

OUT LINE

V

0.4

%/V

V

V

OUT LOAD

I

-0.7

%

V

V

REF

I

2.8

2.85

2.9

V

V

V

REF LINE

I

0.3

%/V

V

V

REF LOAD

I

-0.5

%

V

I

REF

20

mA

Peak Inductor Current

I

LX PK

0.8

1.5

A

Bypass FET Current Limit

I

PASS

1

2.5

A

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 recommended.

Parameter

Symbol

Maximum

Units

Input Supply Voltage

V

IN

-0.3 to 7

V

EN and VDAC Inputs

V

-0.3 to 7

V

LX Pin Voltage (Power switch OFF)

V

LX

-1 to V

V

VOUT Voltage

V

OUT

-0.3 to 7

V

VOUT Short Circuit to GND duration

t

SC

Continuous

s

θ

JA

110

°C/W

Operating Ambient Temperature Range

T

A

-40 to +85

°C

Junction Temperature

T

JC

+150

°C

Storage Temperature

T

S

-60 to +160

°C

Peak IR Reflow Temperature

T

P

260

°C

V

ESD

2kV

Absolute Maximum Ratings

Note:

1) Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.

2) Tested according to JEDEC standard JESD22-A114-B.