2

© 2006 Semtech Corp.

www.semtech.com

POWER MANAGEMENT

SC191

Absolute Maximum Ratings

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.

Unless otherwise noted: V

Notes:

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

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

Electrical Characteristics

Absolute Maximum Ratings

Parameter

Symbol

Maximum

Units

Input Voltage

V

-0.3 to 7.0

V

Enable Input

V

EN

-0.3 to 7.0

V

LX Voltage

V

LX

-1 to V

V

Output Voltage

V

VOUT

-0.3 to 7.0

V

BP Voltage

V

BP

0.3 to 7.0

V

θ

JA

135

°C/W

V

t

SC

Continuous

s

Storage Temperature

T

S

-60 to +160

°C

Junction Temperature

T

JC

+150

°C

Peak IR Reflow Temperature

T

LEAD

260

°C

V

ESD

2kV

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Input Voltage Range

V

IN

2.7

5.5

V

Input Voltage Ripple

V

IN (P-P)

C

mV

Line Regulation

V

LINEREG

I

-0.3

0.3

%/V

Load Regulation

V

LOADREG

0mA < 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

Output Voltage Accuracy

ΔV

OUT

I

-3

3

%

I

-1.5

1.5

%

Front End LDO (FELDO)

V

BP

I

(1)

300

325

mV