3

 2007 Semtech Corp.

www.semtech.com

SC4624

POWER MANAGEMENT

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 implied.

Absolute Maximum Ratings

Electrical Characteristics

Unless otherwise specified, V

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Power Supply

Start Threshold Voltage, UVLO

V

IUV

V

2

2.25

V

Hysteresis Voltage, UVLO

V

IUVHY

120

mV

Supply Current, Shutdown

I

SD

V

0.2

1

µA

Supply Current, Operating

I

Qswitching

FB = COMP, No Load

7

10

mA

I

QL

FB = 0.6V, No Load

3.5

7

mA

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Power Supply

Input Voltage Operating Range

V

IN

2.3

5.5

V

Ambient Temperature Range

T

A

-40

85

°C

Junction Temperature

T

J

-40

125

°C

Max. Output Current

I

OUTMAX

0

4

A

Recommended Operating Conditions

The Performance is not guarantied if exceeding the specifications below.

Parameter

Symbol

Maximum

Units

Supply Voltage

PV

-0.3 to 6

V

PVIN to VCC

+/- 0.3

V

FB, COMP, ISET, SYNC/EN, FS, SS, PGOOD to AGND

-0.3 to VCC+ 0.3

V

PGND to AGND

+/- 0.3

V

PHASE Voltage to PGND

V

PHASE

-0.3 to PVIN+ 0.3

V

PHASE Pulse Voltage to PGND Tpulse < 50ns

V

PHASE

-3 to PVIN+ 2

V

Storage Temperature Range

T

STG

-40 to 150

°C

Junction Temperature

T

J

150

°C

IR Reflow Temperature

T

P

260

°C