CL25 DATA SHEET (04/05/2011) DOWNLOAD

Supertex inc.
CL25
Simple 90V, 25mA,
Temperature Compensated,
Constant Current, LED Driver IC
Features
General Description
Applications
A typical application for the CL25 is to drive LEDs with a
constant current of 25mA. Multiple CL2s can also be used
in parallel to provide higher currents such as 50mA, 75mA
or 100mA. The device is available in TO-92 and TO-243AA
(SOT-89) packaging.
►►
►►
►►
►►
►►
5.0 - 90V operating range (VA-B)
25mA ±10% at 5.0 - 90V
0.01%/°C typical temperature coefficient
No external components (two terminal device)
Can be paralleled for higher current
The Supertex CL25 is a high voltage, temperature
compensated, constant current source. The device is trimmed
to provide a constant current of 25mA±10% at an input
voltage of 5.0 - 90V. No external components are required.
The device can be used as a two terminal constant current
source or constant current sink.
►► LED channel lighting
►► Industrial lamp indicators
►► Accent lighting
Typical Application Circuit
Functional Circuit
Diagram
VA
CL25
Up to 90V
+ VLED(total)
VB
+
ILED
25mA
VA
Control Circuit
and Temperature
Compensation
VLED(TOTAL)
VB
-
Supertex inc.
● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com
CL25
Ordering Information
Package Options
Device
CL25
TO-92
TO-243AA (SOT-89)
CL25N3-G
CL25N8-G
-G indicates package is RoHS compliant (‘Green’)
Pin Configuration
VB
Thermal Characteristics
Package
Power
Dissipation
VB
θJC
VA
θJA
@TA = 25OC
(W)
(OC/W)
TO-92
0.6
125
170
TO-243AA (SOT-89)
1.3*
15
78*
VA VB
(OC/W)
N/C
NC
TO-92 (N3)
TO-243AA (SOT-89) (N8)
NC = No Connect
* Mounted on FR4 board; 25mm x 25mm x 1.57mm
Product Marking
Absolute Maximum Ratings
Parameter
Value
Operating voltage, VA-B
100V
Operating junction temperature, TJ
-40°C to +125°C
Storage temperature, TS
-55°C to +150°C
SiCL
2 5
YYWW
YY = Year Sealed
WW = Week Sealed
= “Green” Packaging
Package may or may not include the following marks: Si or
TO-92 (N3)
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.
W = Code for week sealed
= “Green” Packaging
C25W
Package may or may not include the following marks: Si or
TO-243AA (SOT-89) (N8)
Electrical Characteristics
(TA = 25°C unless otherwise specified)
Sym
Parameter
Min
Typ
Max
Units
VA-B
Operating voltage
5.0
-
90
V
IA-B
Current regulation
22.5
25
27.5
mA
-
0.01
-
%/ C
-40
-
125
-
300
-
ΔIA-B/ΔT
TJ
RA-B
IA-B temperature coefficient
Operating junction temperature
Dynamic resistance
Supertex inc.
Conditions
--VA-B = 5.0V - 90V
O
VA-B = 45V, TJ = -40OC to +100OC
O
C
---
kΩ
---
● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com
2
CL25
Equivalent Block Diagram
Functional Circuit Diagram
VA
VA
Control Circuit
and Temperature
Compensation
25mA
±10%
VB
VB
Temperature Characteristics
Current, normalized to 25°C
1.02
1.01
1.00
0.99
5V
10V
30V
45V
90V
0.98
-55
-35
-15
5
25
45
65
85
105
Temperature (°C)
Output Current vs Voltage
30
25
I A-B (mA)
20
15
10
5
0
0
10
20
30
40
50
60
70
80
90
100
VA-B
Supertex inc.
● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com
3
CL25
CL25 for Multiple LED Strings
VA
Up to 90V
+VLED(TOTAL)
CL25
VB
VA
VA
CL25
VB
CL25
VB
+
ILED
75mA
VLED(TOTAL)
-
CL25 for Higher Current
VA
VA
Up to 90V
+VLED(TOTAL)
CL25
ILED
25mA
VB
CL25
ILED
25mA
VB
VA
CL25
ILED
25mA
VB
VA
CL25
VB
ILED
25mA
+
VLED(TOTAL)
-
Supertex inc.
● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com
4
CL25
3-Lead TO-92 Package Outline (N3)
D
A
Seating
Plane
1
2
3
L
b
e1
e
c
Side View
Front View
E1
E
3
1
2
Bottom View
Symbol
Dimensions
(inches)
A
b
c
D
E
E1
e
e1
L
MIN
.170
.014†
.014†
.175
.125
.080
.095
.045
.500
NOM
-
-
-
-
-
-
-
-
-
MAX
.210
.022†
.022†
.205
.165
.105
.105
.055
.610*
JEDEC Registration TO-92.
* This dimension is not specified in the JEDEC drawing.
† This dimension differs from the JEDEC drawing.
Drawings not to scale.
Supertex Doc.#: DSPD-3TO92N3, Version E041009.
Supertex inc.
● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com
5
CL25
3-Lead TO-243AA (SOT-89) Package Outline (N8)
D
D1
C
E H
L
1
2
E1
3
b
b1
e
A
e1
Side View
Top View
Symbol
Dimensions
(mm)
A
b
b1
C
D
D1
E
E1
e
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
e1
†
1.50
BSC
3.00
BSC
H
L
3.94
0.73†
-
-
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.
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)
Supertex inc.
©2011 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited.
Doc.# DSFP-CL25
A040511
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888
www.supertex.com
6
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