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© 2006 Semtech Corp.

www.semtech.com

SC194B

POWER MANAGEMENT

Electrical Characteristics

Unless otherwise noted: V

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Input Voltage Range

V

IN

V

2.7

5.5

V

VOUT Accuracy

V

OUT

I

V

±1

%

VOUT Temperature Accuracy

V

OUT(T)

I

±0.3

±0.7

%

Line Regulation

V

OUT LINE

V

I

±0.4

±0.65

%

Load Regulation (PWM)

V

OUT LOAD

I

±0.3

±0.65

%

PSAVE Regulation

V

OUT PSAVE

SYNC/PWM = GND, C

+1.3

-0.3

+1.6

-0.6

%

P-Channel On Resistance

R

DSP

I

0.275

Ω

N-Channel On Resistance

R

DSN

I

0.165

Ω

Start-Up Time

T

START

5ms

P-Channel Current Limit

I

LIM(P)

V

1.33

1.9

2.47

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

Logic Inputs

(SYNC/PWM, EN, MODE, VID0, VID1)

V

N

-0.3 to V

V

Output Voltage

V

OUT

-0.3 to V

V

LX Voltage

V

LX

-1 to V

V

θ

JA

40

°C/W

VOUT Short-Circuit to GND

t

SC

Continuous

s

Operating Ambient Temperature Range

T

A

-40 to +85

°C

Storage Temperature

T

S

-60 to +160

°C

Junction Temperature

T

JC

-40 to +150

°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.