Microsemi

Integrated Products

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

Page 2

Copyright

© 2000

Rev. 1.2c, 2005-05-18

LX8816

Dual Channel 1A Low Dropout Regulator

TM

®

ABSOLUTE MAXI MUM RATI NGS

Load Current (Internally Limited)................................................................................... 1A

Power Dissipation ................................................................................... Internally Limited

Short-Circuit Protection ........................................................................................Indefinite

Operating Junction Temperature................................................................................150°C

Storage Temperature Range........................................................................ -65°C to 150°C

Peak Package Solder Reflow Temperature

(40 seconds maximum exposure)..................................................................260°C (+0, -5)

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.

TH ERM A L DATA

DF

Plastic S-Pak 5-Pin

θ

JT

4.5°C/W

θ

J

A

24.5°C/W

40°C/W depending on mounting technique. (See Application Notes Section: Thermal

considerations)

PACKAGE PIN OUT

1

2

3

4

5

V

2

V

1

GND

ADJ

V

IN

Tab is GND

(Top View)

RoHS 100% Matte Tin Lead Finish

FUNCTIONAL PIN DESCRIPTION

Positive unregulated supply input for the regulator. Bypass to GND with at least 2.2µF capacitance having low

ESR for good transient response.

ADJ

connected between ADJ and GND.

GND

pin. In addition the tab on the S-Pak package and pin 3 are also used for heat sinking the device.

Adjustable regulator output (Regulator #1) It is recommended to bypass to GND with at least 2.2uF. Size your

output capacitor to meet the transient loading requirement. If you have a very dynamic load, a lower ESR

capacitor will improve the response to these load steps.

Fixed regulator output (Regulator #2). It is recommended to bypass to GND with at least 2.2µF. Size your output

capacitor to meet the transient loading requirement. For dynamic loads, a lower ESR capacitor will improve the

response to these load steps.