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© 2006 Semtech Corp.

www.semtech.com

POWER MANAGEMENT

SC905A

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

Input Supply Voltage

V

IN

-0.3 to +7

V

Digital Input Voltage

V

DIG

-0.3 to V

V

Operating Ambient Temperature Range

T

A

-40 to +85

°C

Operating Junction Temperature Range

T

J

-40 to +125

°C

Peak IR Reflow Temperature

T

LEAD

260

°C

Storage Temperature

T

STG

-60 to +150

°C

θ

JA

26

°C/W

ESD

2

kV

Unless otherwise noted V

°

C. Typical values are at T

°

C.

Parameter

Symbol

Condition

Min

Typ

Max

Units

General

Supply Voltage

V

IN

2.7

5.5

V

Shutdown Current

I

SD

ON = 0V, HFPWR = 0V, CHPWR = 0V,

PGOOD = 0V

1

μA

Quiescent Supply Current

I

SU

Default Start-Up Mode

300

μA

I

STBY

30

60

μA

Supply Bypass Capacitor

C

VCC

At Each Power Input Pin

1

μF

Start-Up Time

t

SU

C

ms

Under-Voltage Lockout

UVLO

Descending, Hysteresis = 50mV

2.5

V

Over-Temperature

OT

Hysteresis = 20°C

160

°C

Digital Inputs

V

IL

0.4

V

V

IH

1.25

V

Digital Input Current

I

DIG

Logic Level High or Low

-0.2

0.2

μA

Digital Outputs

V

OL

I

2

10

%VPAD

V

OH

I

90

98

%VPAD

LDO Regulator (CORE) - 300mA

∆V

OUT

1.35V ≤ V

V

-75

+75

mV

Current Limit

I

LIM

V

350

900

mA

Default At Start-Up: ON

V

OUT-HI

VCSEL - High

1.80

V

V

OUT-LO

VCSEL - Low

1.35

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