CL7 DATA SHEET (06/22/2014) DOWNLOAD

Supertex inc.
CL7
Linear, 100mA, Constant Current
LED Driver with Enable Input
Features
General Description
►► 100mA ±5% constant current drive
►► Built-in reverse polarity protection
►► Logic level enable
►► Dimmable via EN pin
►► Overtemperature protection
►► 90V max rating for transient immunity
The CL7 is a linear fixed current regulator designed for
driving high brightness LEDs at 100mA from nominal 12V,
24V, and 48V power supplies. With a maximum rating of
90V, it is able to withstand transients without the need for
additional transient protection circuitry. The CL7 is offered
in the 8-Lead SOIC package.
An active low enable input (EN) allows logic level control
of the LED for on/off control or PWM dimming. The enable
input has 100kΩ pull-down resistance. For applications not
needing an enable input, refer to the CL6 data sheet.
Applications
►►
►►
►►
►►
Flashlights
Specialty lighting
Low voltage signage
Low voltage lighting
Over temperature protection shuts off the LED current
when the die temperature rises above 135°C (nominal).
Full LED current resumes when the die temperature falls
below 105°C (nominal).
Typical Application Circuit
VIN
100mA
VDD
Host
Controller
EN
OUT
Control
100kΩ
CL7
GND
Doc.# DSFP-CL7
A030314
Supertex inc.
www.supertex.com
CL7
Ordering Information
Pin Configuration
Part Number
Package Options
Packing
CL7SG-G
8-Lead SOIC (w/heat slug)
2500/Reel
-G denotes a lead (Pb)-free / RoHS compliant package
Absolute Maximum Ratings
Parameter
GND 1
8
VDD
GND 2
7
OUT
GND 3
6
NC
GND 4
5
EN
Heat Slug
Value
Supply voltage, VDD
-25V to +100V
Output voltage, VOUT
-25V to +100V
Enable voltage, VEN
-0.5V to +6.5V
Operating junction temperature
8-Lead SOIC w/heat slug
(top view)
(Heat slug potential is at ground)
Product Marking
-40°C*
Storage temperature
CL7
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.
LLLL
Package may or may not include the following marks: Si or
8-Lead SOIC w/heat sug
Note:
* Maximum junction temperature internally limited.
Pin Designation
Typical Thermal Resistance
Package
θja
8-Lead SOIC (w/heat slug)
84OC/W*
YY = Year Sealed
WW = Week Sealed
L = Lot Number
= “Green” Packaging
YYWW
-65°C to +150°C
* Mounted on JEDEC test PCB (2s 2p)
Pin
Name
VDD
VDD
OUT
Output
Description
Supply voltage for the CL7
Connect the LED between this pin and
the supply voltage
GND Ground Circuit common
EN
Enable
Active low enable input - this input has
an internal 100kΩ pull-down resistance
Recommended Operating Conditions (all voltages with respect to GND pin)
Sym
Parameter
VDD
Supply voltage
VOUT
Voltage at OUT pin(1)
TJ
Min
Typ
Max
Units
Normal
Extended
6.5
6.5
-
28
90
V
---
Normal
Extended
4.0
4.0
-
28
90
V
---
-40
-
119
C
---
Junction temperature(2)
o
Conditions
Note:
1. Continuous operation at high VOUT voltages may result in activation of over temperature protection. Use appropriate heat sinking.
2. Maximum junction temperature internally limited.
Thermal Characteristics (Guaranteed by design – not production tested )
Sym
Parameter
Min
Typ
Max
TLIM
Over-temperature limit
120
135
150
O
THYS
Over-temperature hysteresis
-
30
-
O
Doc.# DSFP-CL7
A030314
2
Units Conditions
C
---
C
---
Supertex inc.
www.supertex.com
CL7
Electrical Characteristics
(Over normal recommended operating conditions unless otherwise specified. All voltages with respect to GND pin. Production tested @ 25OC.)
Sym
Parameter
Min
Typ
Max
Units
Conditions
IDD
Current into VDD pin
3.0
5.0
10
mA
---
IOUT
Current into OUT pin1
95
90
50
100
100
-
105
110
120
mA
Normal conditions, 25°C
Normal conditions, full temp2
Extended conditions
IOUT(OFF)
Current into OUT pin with VDD pin open
or EN = 1
-
-
10
µA
VDD = open
VEN(ON)
Enable voltage, on
-
-
0.8
V
---
VEN(OFF)
Enable voltage, off
2.4
-
-
V
---
REN
Enable pull-down resistance
-
100
-
kΩ
---
VOFF
Voltage at VDD to shut off LED current
-
-
1.0
V
IOUT < 10µA
tON
On delay, EN to OUT
-
3.0
-
µs
EN = 0V
tOFF
Off delay, EN to OUT
-
0.1
-
µs
EN = 5V
tRISE
Current rise time, EN to OUT
-
4.0
-
µs
EN = 0V
tFALL
Current fall time, EN to OUT
-
0.3
-
µs
EN = 5V
Note:
1. Continuous operation at high VOUT voltages may result in activation of over temperature protection. Use appropriate heat sinking.
2. Maximum junction temperature internally limited.
Timing
EN
tON
tOFF
tRISE
tFALL
90%
IOUT
10%
IOUT vs Temperature
IOUT (normalized)
1.05
1.00
0.95
0.90
0.85
-50
Doc.# DSFP-CL7
A030314
-25
0
25
50
75
Temperature (OC)
3
100
125
Supertex inc.
www.supertex.com
CL7
Application Circuits
PWM Dimming
2-Level LED Circuit
VIN
EN = 0:
EN = 1:
(1-D) • 100mA
VDD
PWM
signal
EN
OUT
VDD
EN
Control
OUT
Control
100kΩ
100kΩ
CL7
CL7
GND
GND
D is the portion of time the PWM signal is high.
Doc.# DSFP-CL7
A030314
VIN
107.5mA
7.5mA
4
Minimum VIN is increased by LED drop.
Supertex inc.
www.supertex.com
CL7
8-Lead SOIC (Narrow Body w/Heat Slug) Package Outline (SG)
4.90x3.90mm body, 1.70mm height (max), 1.27mm pitch
D1
D
8
8
Note 1
(Index Area
D/2 x E1/2)
Exposed
Thermal Pad Zone
E1 E
E2
1
1
Bottom View
Top View
θ1
View B
Note 1
A
h
h
A A2
L2
Seating
Plane
A1
e
L
b
Side View
L1
View A-A
A
θ
Gauge
Plane
Seating
Plane
View B
Notes:
1. If optional chamfer feature is not present, a Pin 1 identifier must be located in the index area indicated. The Pin 1 identifier can be: a molded mark/
identifier; an embedded metal marker; or a printed indicator.
Symbol
A
MIN 1.25*
Dimension
NOM
(mm)
MAX 1.70
A1
A2
b
0.00
1.25
0.31
-
-
-
0.15
1.55*
0.51
D
D1
E
E1
E2
4.80* 3.30
5.80* 3.80* 2.29
4.90
6.00
†
-
5.00* 3.81
†
3.90
e
†
-
6.20* 4.00* 2.79
†
1.27
BSC
h
L
0.25
0.40
-
-
0.50
1.27
L1
L2
θ
θ1
0
5O
-
-
8
15O
O
1.04
REF
0.25
BSC
O
JEDEC Registration MS-012, Variation BA, Issue E, Sept. 2005.
* This dimension is not specified in the JEDEC drawing.
† This dimension differs from the JEDEC drawing.
Drawings not to scale.
Supertex Doc. #: DSPD-8SOSG, Version D041009.
(The package drawing(s) in this data sheet may not reflect the most current specifications. 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)
Supertex inc.
©2014 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited.
Doc.# DSFP-CL7
A030314
5
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888
www.supertex.com