2

© 2004 Semtech Corp.

United States Patent No. 6,441,597

www.semtech.com

POWER MANAGEMENT

SC420A

Electrical Characteristics

Absolute Maximum Ratings

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Power Supply

Supply Voltage

VIN

4.75

5

6

V

VIN2

27

V

Quiescent Current, Operating

(static)

IQ

op

CO = 0V, EN >

2.2V

2.3

mA

Quiescent Current, Shutdown

IQ

sd

CO = 0V, EN = 0V

0.2

20

µA

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

Conditions

Min

Max

Units

VIN2 Supply Voltage

VIN2

30

V

BST to PGND

40

V

BST to DRN

VIN + 2

V

DRN to PGND

t

- 5

34

V

static

- 2

30

TG

DRN - 0.3

BST + 0.3

V

BG

- 0.3

VIN + 0.3

V

VPN to PGND

VPN

30

V

VIN to PGND

VIN

7

V

EN, CO, CDELAY

- 0.3

VIN + 0.3

V

Continuous Power Dissipation

P

D

0.66

W

2.56

Thermal Resistance Junction to Case

θ

JC

3

Thermal Resistance Junction to

θ

JA

48

Operating Junction Temperature

Range

T

J

- 40

125

Storange Temperature Range

T

STG

- 65

150

Peak IR Reflow (10 - 40 sec)

T

IRreflow

260

Note:

(1) Performance when used according to manufacturing guidelines, refer to Applications Information section for more information