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© 2005 Semtech Corp.

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SC2440

POWER MANAGEMENT

Absolute Maximum Ratings

Electrical Characteristics

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

Max

Units

Input Voltage

V

IN

-0.3 to 20

V

Boost Pin

V

BST

40

V

Boost Pin Above SW

V

20

V

PGOOD Pin Voltage

V

PGOOD

V

IN

V

SS Pins

V

SS

3

V

FB Pins

V

FB

-0.3 to V

IN

V

SYNC Pin Current

I

SYNC

5

mA

SW Voltage

V

SW

-0.6 to V

IN

V

SW Transient Spikes (<10ns Duration)

V

SW

V

V

-2.5

Operating Ambient Temperature Range

T

A

-40 to 85

°C

Thermal Resistance Junction to Ambient

θ

JA

45

°C/W

Maximum Junction Temperature

T

J

150

°C

Storage Temperature Range

T

STG

-65 to +150

°C

Lead Temperature (Soldering)10 sec

T

LEAD

300

°C

Parameter

Conditions

Min

Typ

Max

Units

V

2.45

2.62

2.78

V

V

75

mV

Quiescent Current

Not switching, PGOOD Open

3.3

4.3

mA

Shutdown Current

V

38

60

µA

Feedback Voltage

0.980

1.000

1.020

V

Feedback Voltage Line

Regulation

V

0.005

%/V

FB Pin Input Bias Current

V

-15

-30

nA

Error Amplifier Transconductance

280

µ

Error Amplifier Open-loop Gain

53

dB

COMP Source Current

V

20

µA

COMP Sink Current

V

20

µA

COMP Pin to Switch Current Gain

5.7

A/V

Unless specified: -40°C < T