Supertex CL2 Datasheet

Supertex inc.

Simple 90V, 20mA, Temperature Compensated

Constant Current LED Driver IC

CL2

Features

► 5.0 to 90V operating range (V

► 20mA ±10% at 5.0 - 90V

► 0.01%/°C typical temperature coefcient

► Available in TO-243AA (SOT-89), TO-252 (D-PAK),

& TO-92 packages

► Can be paralleled for higher current

A-B

)

Applications

► LED driver

► Industrial lamp indicators

► Signage

► Accent lighting

► Automotive

► Constant current source

► Constant current sink

General Description

The Supertex CL2 is a high voltage, temperature compensated,
constant current source. The device is trimmed to provide
a constant current of 20mA±10% at an input voltage of 5.0

- 90V. The device can be used as a two terminal constant
current source or constant current sink.

A typical application for the CL2 is to drive LEDs with a constant
current of 20mA. Multiple CL2s can also be used in parallel to
provide higher currents such as 40mA, 60mA or 80mA. The
device is available in TO-243AA (SOT-89), TO-252 (D-PAK),
and TO-92 packages.

Typical Application Circuit

Up to 90V

+ V

LED(total)

100nF

I

LED

<20mA

VA

VB

CL2

+

V

LED(total)

-

Functional Circuit

Diagram

VA

Control Circuit

and Temperature

Compensation

VB

Doc.# DSFP-CL2
C071012

Supertex inc.

www.supertex.com

Ordering Information

Part Number Package Options Packing

CL2K4-G TO-252 (D-PAK) 2000/Reel

CL2N3-G TO-92 1000/Bag

CL2N3-G P002 TO-92 2000/Reel

CL2

Pin Congurations

CL2N3-G P003 TO-92 2000/Reel

CL2N3-G P005 TO-92 2000/Reel

CL2N3-G P013 TO-92 2000/Reel

CL2N3-G P014 TO-92 2000/Reel

CL2N8-G TO-243AA (SOT-89) 2000/Reel

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

Refer to ‘P0xx’ Tape & Reel Specs for P002, P003, P005, P013, and P014 TO-

92 Taping Specications and Winding Styles

Absolute Maximum Ratings

Parameter Value

Operating voltage, V

Operating junction temperature, T

Storage temperature, T

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.

100V

A-B

j

S

-40°C to +125°C

-55°C to +150°C

Typical Thermal Characteristics

Power Dissipation

Package

@TA = 25OC

(W)

TO-252 2.0* 81*

TO-92 0.6 132

TO-243AA 1.3* 133*

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

θ

ja

(OC/W)

VB

VA

N/C

VA

TO-252 (D-PAK) (K4)

VB

VA

VB

TO-92 (N3)

N/C

TO-243AA (SOT-89) (N8)

Product Marking

Si YYWW
CL2
LLLLLLL

Package may or may not include the following marks: Si or

SiCL

2
YYWW

Package may or may not include the following marks: Si or

CL2W

TO-243AA (SOT-89) (N8)

Package may or may not include the following marks: Si or

YY = Year Sealed
WW = Week Sealed
L = Lot Number
= “Green” Packaging

TO-252 (D-PAK) (K4)

YY = Year Sealed
WW = Week Sealed
= “Green” Packaging

TO-92 (N3)

W = Code for week sealed
= “Green” Packaging

VB

NC

Electrical Characteristics (T

= 25°C unless otherwise specied)

A

Sym Parameter Min Typ Max Units Conditions

V

A-B

I

A-B

ΔI

/ΔT I

A-B

T

j

R

A-B

Doc.# DSFP-CL2
C071012

Operating voltage 5.0 - 90 V ---

Current regulation 18.0 20 22 mA V

temperature coefcient - 0.01 - %/OC V

A-B

Operating junction temperature -40 - 125

O

C ---

Dynamic resistance - 300 - kΩ ---

2

A-B

A-B

= 5.0V - 90V

= 45V, Tj = -40OC to +100OC

Supertex inc.

www.supertex.com

Functional Circuit Diagram Equivalent Block Diagram

CL2

VA

Control Circuit

and Temperature

Compensation

VB

Temperature Characteristics

1.03

1.02

1.01

1.00

VA

20mA
±10%

VB

5.0V

45V

90V

0.99

Current, normalized to 25°C

0.98

-55-35 -15525 45 65 85 105 125 145

Output Current vs Voltage

25

20

15

(mA)

A-B

I

10

5

Temperature (°C)

Doc.# DSFP-CL2
C071012

0

0102030405060708090 100

V

A-B

3

Supertex inc.

www.supertex.com

CL2 for Multiple LED Strings

CL2

CL2

Up to 90V

+V

LED(total)

100nF

CL2 for Higher Current

I

LED

~20mA

VA

VA

VA

CL2 CL2 CL2

VB

I

LED

~20mA

CL2

VB

VA

I

~20mA

CL2

VB

LED

VA

CL2

I

LED

~20mA

VA

VA

VB

+

+V

-

LED(total)

Up to 90V

+V

LED(total)

100nF

VB

I

LED

~60mA

VB

+

V

LED(total)

_

VB

Doc.# DSFP-CL2
C071012

Supertex inc.

4

www.supertex.com

3-Lead TO-252 D-PAK Package Outline (K4)

CL2

E

4

1 2 3

Front View

b3

E1

L3

θ1

D1

D

L4

L5

Note 1

b2

e

Rear View

b

View B

Side View

A

c2

H

L2

Gauge
Plane

θ

L

L1

A1

Seating

Plane

View B

Note:

1. Although 4 terminal locations are shown, only 3 are functional. Lead number 2 was removed.

Symbol A A1 b b2 b3 c2 D D1 E E1 e H L L1 L2 L3 L4 L5

Dimen-

sion

(inches)

JEDEC Registration TO-252, Variation AA, Issue E, June 2004.

* This dimension is not specied in the JEDEC drawing.

Drawings not to scale.
Supertex Doc. #: DSPD-3TO252K4, Version E041309.

MIN .086 .000* .025 .030 .195 .018 .235 .205 .250 .170

NOM - - - - - - .240 - - - - .060 - - - - -

MAX .094 .005 .035 .045 .215 .035 .245 .217* .265 .182* .410 .070 .050 .040 .060 10O15

.090
BSC

.370 .055

.108

REF

.035 .025* .045 0O0

.020

BSC

θ

θ1

O

O

Doc.# DSFP-CL2
C071012

Supertex inc.

5

www.supertex.com

3-Lead TO-92 Package Outline (N3)

D

Seating
Plane

1 2 3

L

CL2

A

Front View

E1

1

Bottom View

e1

b

e

c

Side View

E

3

2

Symbol A b c D E E1 e e1 L

MIN .170 .014

Dimensions

(inches)

NOM - - - - - - - - -

MAX .210 .022

JEDEC Registration TO-92.

* This dimension is not specied in the JEDEC drawing.

† This dimension differs from the JEDEC drawing.

Drawings not to scale.
Supertex Doc.#: DSPD-3TO92N3, Version E041009.

Doc.# DSFP-CL2
C071012

†

†

.014

.022

†

.175 .125 .080 .095 .045 .500

†

.205 .165 .105 .105 .055 .610*

Supertex inc.

6

www.supertex.com

Supertex inc.

94089

el: 408-222-8888

3-Lead TO-243AA (SOT-89) Package Outline (N8)

D

D1

E

H

E1

C

CL2

L

1 2 3

b

e

e1

Top View

b1

A

Side View

Symbol A b b1 C D D1 E E1 e e1 H L

†

1.50
BSC

3.00
BSC

3.94 0.73

Dimensions

(mm)

MIN 1.40 0.44 0.36 0.35 4.40 1.62 2.29 2.00

NOM - - - - - - - - - -

MAX 1.60 0.56 0.48 0.44 4.60 1.83 2.60 2.29 4.25 1.20

JEDEC Registration TO-243, Variation AA, Issue C, July 1986.

† This dimension differs from the JEDEC drawing
Drawings not to scale.
Supertex Doc. #: DSPD-3TO243AAN8, Version F111010.

(The package drawings in this data sheet may not reect the most current specications. For the latest package outline
information go to http://www.supertex.com/packaging.html.)

Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives

an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability
to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and
specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com)

©2012 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited.

Doc.# DSFP-CL2
C071012

1235 Bordeaux Drive, Sunnyvale, CA

7

T

www.supertex.com

†