2

LR645

Ordering Information

Device

Package Option

TO-92

TO-243AA

TO-220

8-Lead SOIC

LR645

LR645N3

LR645N8

LR645N5

LR645LG

LR645N3-G LR645N8-G LR645N5-G LR645LG-G

-G indicates package is RoHS compliant (‘Green’)

Absolute Maximum Ratings

Parameter

Value

Input voltage

450V

Output voltage

15.5V

Operating and storage temperature

Soldering temperature

Absolute Maximum Ratings are those values beyond which damage to the device may

occur. Functional operation under these conditions is not implied. Continuous operation

of the device at the absolute rating level may affect device reliability. All voltages are

referenced to device ground.

Thermal Characteristics

Package

Power

Dissipation

@T

θ

JC

θ

JA

SOIC

0.31W

156

400*

TO-92

0.74W

125

170

TO-220

1.8W

8.3

70

TO-243AA

1.6W

15

78*

Pin Configurations

* Mounted on FR4 board; 25mm x 25mm x 1.57mm

Significant PD increase possible on ceramic substrate

Symbol

Parameter

Min

Typ

Max

Units

Conditions

V

OUT

Output voltage

9.3

10

10.7

V

No load

9.0

10

11.5

V

T

ΔV

OUT

Line regulation

-

40

200

mV

V

Load regulation

-

150

400

mV

V

V

IN

Operating input voltage range

15

-

450

V

---

I

INQ

Input quiescent current

-

50

150

µA

No Load

I

OFF

V

-

0.1

10

µA

V

Electrical Characteristics

(Test conditions unless otherwise specified: T

1

8

TO-243AA

(SOT-89)

TO-92

1

3

2

TAB

TAB

TO-220

8-Lead SOIC

1

3

2

1

3

2

+V

IN

GND

V

OUT

TRIM

GATE

TO-92

1

2

3

-

-

TO-243AA

1

2, TAB

3

-

-

TO-220

1

2, TAB

3

-

-

8-Lead SO

13457

Package Markings

YY = Year Sealed

WW = Week Sealed

L = Lot Number

= “Green” Packaging

YYWW

LR645

LLLL

= 2-week alpha date code

LR6

8-Lead SOIC

TO-243AA