Microsemi

Linfinity Microelectronics Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 2

Copyright

© 2000

Rev. 1.0a,2000-11-28

LX8630-xx

3A BiCMOS Very Low Dropout Regulators

A

M I CROS E M I

COM P A N Y

  

   









P

THERMAL RESISTANCE

θ

JT

2.1

°C/W

THERMAL RESISTANCE

θ

JA

60

°C/W

P

THERMAL RESISTANCE

θ

JT

2.1

°C/W

THERMAL RESISTANCE

θ

JA

60

°C/W

DD

THERMAL RESISTANCE

θ

JT

2.1

°C/W

THERMAL RESISTANCE

θ

JA

60

°C/W

DD

THERMAL RESISTANCE

θ

JT

2.1

°C/W

THERMAL RESISTANCE

θ

JA

60

°C/W

The

θ

All of the above assume no ambient airflow.

•

θ

ground plane or internal power plane

.

θ

depending on mounting technique. See table below for thermal resistance

Copper Area

(Topside)*

Copper Area

(Backside)*

Board Area

Thermal

Resistance

(

θ

2.5 sq” (1613mm

2.5 sq” (1613mm

2.5 sq” (1613mm

25°C/W

1.0 sq” (645 mm

2.5 sq” (1613mm

2.5 sq” (1613mm

27°C/W

0.17 sq” (110 mm

2.5 sq” (1613mm

2.5 sq” (1613mm

35°C/W

*Tab of device attached to topside copper

  

  

(Top View)

1

V

IN

GND

V

OUT

2

3

TAB is GND

(T op V iew)

1

V

IN

GN D

V

OU T

2

3

T AB is G N D

4

5

ADJ

SHDN

(Top V iew)

1

2

3

TA B is G N D

4

5

GN D

V

OU T

AD J

S HDN

V

IN

(Top View)

1

2

3

TAB is GND

GND

V

OUT

V

IN

Operating Junction Temperature

Plastic (P & DD Packages) ................................................................................... 150

°C

Storage Temperature Range ........................................................................-65

°C to 150°C

Lead Temperature (Soldering, 10 seconds) ............................................................... 300

°C

Note:

Exceeding these ratings could cause damage to the device. All voltages are with respect to

Ground. Currents are positive into, negative out of specified terminal.