2

© 2003 Semtech Corp.

United States Patent No. 6,441,597

www.semtech.com

POWER MANAGEMENT

SC420

Electrical Characteristics

Absolute Maximum Ratings

Unless specified: T

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Power Supply

Supply Voltage

V IN

4.75

5

6

V

V IN2

27

V

Quiescent Current, Operating

(static)

IQ

op

CO = 0V, EN >

2.2V

2.3

mA

Quiescent Current, Tri-state

IQ

ts

CO floating

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

- 2

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

Ambient (1)

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

240

Note:

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

(2) Specification refers to application circuit in Figure 1

(1) Guaranteed by design