* PWP package pin 23 serves as signal ground; pins 7, 8, 9,

20, 21 and 22 serve as heatsink/ground.

TSSOP-28 (Top View)

PWP Package

ABSOLUTE MAXIMUM RATINGS

Termpwr Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7V

Signal Line Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to +7V

Regulator Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−65°C to +150°C

Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−55°C to +150°C

Lead Temperature (Soldering, 10 Sec.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C

RECOMMENDED OPERATING CONDITIONS

Termpwr Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.8V to 5.25V

Signal Line Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to +5V

Disconnect Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to Termpwr

Unless otherwise specified all voltages are with respect to Ground. Currents are posi-

tive into, negative out of the specified terminal.

Consult Packaging Section of Unitrode Integrated Circuits databook for thermal limita-

tions and considerations of packages.

UC5609

CONNECTION DIAGRAMS

PLCC-28 (Top View)

QP Package

* QP package pins 12 - 18 serve as both heatsink and signal

ground.

* DWP package pin 28 serves as signal ground; pins 7, 8, 9,

20, 21, 22 serve as heatsink/ground.

SOIC-28 (Top View)

DWP Package

Note: Drawings are not to scale.

DIL-24 (Top View)

N or J Package

2