Supertex inc.
Supertex inc.
www.supertex.com
CL525
Doc.# DSFP-CL525
A052013
General Description
The CL525 is a xed, linear current regulator designed for
driving LEDs at 25mA. With a maximum rating of 90V, it is able
to withstand transients without the need for additional transient
protection circuitry. It is ideally suited for applications employing
single or multiple LEDs.
The minimum dropout voltage of 1.0V accommodates extra
LEDs, permits lower supply voltages, and provides more
efcient operation.
The CL525 is offered in TO-252(D-PAK) and TO-92 packages.
Typical Application Circuit
Linear, Fixed Constant Current
LED Driver
Features
►25mA ±10% constant current drive
►1.0V dropout
►90V rating for transient immunity
►Temperature compensated
►4.75 - 90V supply range
Applications
►Specialty lighting
►Low voltage signage
Control
V
IN
4.75 – 90V
OUT
GND
VDD
100nF20mA
20mA
CL525
2
CL525
Supertex inc.
www.supertex.com
Doc.# DSFP-CL525
A052013
Absolute Maximum Ratings
Parameter Value
Supply voltage, VDD -0.5V to +100V
Output voltage, VOUT -0.5V to +100V
Operating junction temperature -40°C to +125°C
Storage temperature -65°C to +150°C
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..
Sym Parameter Min Typ Max Units Conditions
VDD Supply voltage 4.75 - 90 V ---
VOUT Voltage at OUT pin11.0 - 90 V ---
TJJunction temperature -40 - 125 oC---
CDD VDD bypass capacitor 100 - - nF ---
Recommended Operating Conditions (all voltages with respect to GND pin)
Pin Congurations
YY = Year Sealed
WW = Week Sealed
L = Lot Number
= “Green” Packaging
Si YYWW
CL525K4
LLLLLLL
YY = Year Sealed
WW = Week Sealed
= “Green” Packaging
SiCL
525
YYWW
TO-92
TO-252 (D-PAK)
VDD
OUT
GND
TO-92
TO-252 (D-PAK)
Product Marking
OUT
VDD
GND
Package may or may not include the following marks: Si or
Package may or may not include the following marks: Si or
Part Number Package Options Packing
CL525K4-G TO-252 (D-PAK) 2000/Reel
CL525N3-G TO-92 1000/Bag
CL525N3-G P002 TO-92 2000/Reel
CL525N3-G P003 TO-92 2000/Reel
CL525N3-G P005 TO-92 2000/Reel
CL525N3-G P013 TO-92 2000/Reel
CL525N3-G P014 TO-92 2000/Reel
Ordering Information
Typical Thermal Resistance
Package θja
TO-252 (D-PAK) 81OC/W*
TO-92 132OC/W*
Notes:
1. Thermal considerations may limit voltage to less than 90V.
* Mounted on JEDEC test PCB (2s 2p)
-G denotes a lead (Pb)-free / RoHS compliant package
Refer to ‘P0xx’ Tape & Reel Specs for P002, P003, P005, P013, and P014
TO-92 Taping Specications and Winding Styles
3
CL525
Supertex inc.
www.supertex.com
Doc.# DSFP-CL525
A052013
Electrical Characteristics
(Over recommended operating conditions. TA = 25OC unless otherwise specied. All voltages with respect to GND pin)
Sym Parameter Min Typ Max Units Conditions
IDD Current into VDD pin - - 1.0 mA ---
IOUT Current into OUT pin 22.5 25 27.5 mA 1.0V < VOUT < 90V
- - 27.5 VOUT <1.0V
IOUT(OFF) Current into OUT pin with VDD pin open - - 10 µA VDD = open
VDD(OFF) Voltage at VDD to shut off LED current - - 1.0 V IOUT < 10µA
tON VDD applied on time - - 100 µs ---
tOFF VDD removed off time - - 100 µs ---
Temperature Effects
Application Circuits
Switched LED
Control
V
IN
4.75 – 90V
OUT
GND
VDD
IOUT
100nF
25mA
1.02
1.00
0.98
0.96
0.94
0.92
-50 0 50 100 150
Junction Temperature (OC)
Current
(Normalized to 25
O
C at V
OUT
= 1.0V)
120 25
-40
VOUT = 90V, 100ms
VOUT = 1.0V
Seperate LED Supply
(VOUT may be higher or lower than VDD.)
Control
VIN
OUT
GND
VDD
25mA
VDD
4
CL525
Supertex inc.
www.supertex.com
Doc.# DSFP-CL525
A052013
Application Circuits (cont.)
Ground Referenced LEDs
Control
VIN
OUT
GND
VDD
100nF
25mA
Pin Description
Pin #
Name Description
TO-252
D-PAK
(K4)
TO-92
(N3)
1 1 VDD Supply voltage for the CL525. Bypass locally with a 100nF capacitor to
ground.
3 2 OUT Constant current output (sink).
4 3 GND Circuit common.
ILED = IOUT + IDD
VLED + 4.75V ≤ VIN ≤ VLED + 90V
5
CL525
Supertex inc.
www.supertex.com
Doc.# DSFP-CL525
A052013
3-Lead TO-252 D-PAK Package Outline (K4)
Note:
1. Although 4 terminal locations are shown, only 3 are functional. Lead number 2 was removed.
1 2 3
4
L4 L5
b
b2
e
D1
E1
L1
L
Seating
Plane
A1
Gauge
Plane
θ
D
E
View B
Front View Side View
Rear View
View B
θ1
H
c2
A
L3
L2
b3
Note 1
Symbol A A1 b b2 b3 c2 D D1 E E1 e H L L1 L2 L3 L4 L5 θθ1
Dimen-
sion
(inches)
MIN .086 .000* .025 .030 .195 .018 .235 .205 .250 .170
.090
BSC
.370 .055
.108
REF
.020
BSC
.035 .025* .045 0O0O
NOM - - - - - - .240 - - - - .060 - - - - -
MAX .094 .005 .035 .045 .215 .035 .245 .217* .265 .182* .410 .070 .050 .040 .060 10O15O
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.
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)
©2013 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited. Supertex inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888
www.supertex.com
6
(The package drawing(s) 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.)
CL525
Doc.# DSFP-CL525
A052013
3-Lead TO-92 Package Outline (N3)
Symbol A b c D E E1 e e1 L
Dimensions
(inches)
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 specied in the JEDEC drawing.
† This dimension differs from the JEDEC drawing.
Drawings not to scale.
Supertex Doc.#: DSPD-3TO92N3, Version E041009.
Seating
Plane
1
2
3
Front View Side View
Bottom View
E1 E
D
e1
L
e
c
1 2 3
b
A