CL330.pdf 데이터시트 (총 7 페이지) - 파일 다운로드 CL330 데이타시트 다운로드

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CL330
3-Channel 30mA Linear LED Driver
Features
±6.0% current accuracy @ 4.0 -15V
90V standoff voltage
Separate enable pins for each channel allow for
PWM dimming
Over-temperature protection
8-Lead SOIC (w/Heat Slug) package
Applications
LCD backlighting
Indicator lamps
General Description
The CL330 is designed to drive 3 strings of LEDs at a
constant current of 30mA.
Other drivers with currents in the range of 20 - 30mA are
available. The drive current is fixed, with a ±6% tolerance
over a VOUT range of 4.0 - 15V.
Separate enable pins for each channel allow for PWM
dimming, 3-step linear dimming, or individual disconnection
of faulty LED strings.
Over-temperature protection circuitry shuts down all 3
channels when the nominal die temperature reaches 135°C.
Normal operation resumes when the die temperature drops
by 30°C.
The CL330 is available in the 8-Lead SOIC (w/Heat Slug)
package and requires a single ceramic bypass capacitor
which may be shared among several drivers.
Block Diagram and Typical Application Circuit
6.5 - 90V
Host
Controller
CIN
100nF
8
VIN
REG VDD
1 EN1
2 EN2
3 EN3
7
OUT1
CL330
6
OUT2
GND
4
5
OUT3
1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com

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CL330
Ordering Information
Device
8-Lead SOIC (w/Heat Slug)
4.90x3.90mm body
1.70mm height (max)
1.27mm pitch
CL330
CL330SG-G
-G indicates package is RoHS compliant (‘Green’)
Absolute Maximum Ratings
Parameter
Value
Supply voltage, VIN
Output voltage, VOUT
Enable voltage, VEN
Operating temperature1
-0.5V to +100V
-0.5V to +100V
-0.5V to +6.5V
-40°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.
Note:
1. Maximum junction temperature internally limited.
Pin Configuration
OUT3
OUT2
OUT1
VIN
Underside plate
is ground
GND
EN3
EN2
EN1
8-Lead SOIC (w/Heat Slug) (SG)
Product Marking
YYWW
CL330
LLLL
YY = Year Sealed
WW = Week Sealed
L = Lot Number
= “Green” Packaging
8-Lead SOIC (w/Heat Slug) (SG)
Recommended Operating Conditions (all voltages with respect to GND pin)
Sym Parameter
Min Typ Max Units Conditions
VIN
VOUT
Supply voltage
Output voltage
6.5 - 90 V ---
15 V EN = 0
4.0 -
90 V EN = 1
fEN Enable toggling frequency
TJ Junction temperature
CIN VIN capacitor
0 - 100 kHz ---
-40 - 119 oC ---
- 100 -
nF ---
Thermal Characteristics
Sym Parameter
θJA
Thermal resistance,
junction to ambient
TLIM Over-temperature limit
THYS Over-temperature hysteresis
Min Typ Max Units Conditions
- 48 - OC/W Mounted on JEDEC test PCB (2s 2p)
120 135 150
- 30 -
OC ---
OC ---
1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com
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CL330
Electrical Characteristics
(Over recommended operating conditions. TA @ 25OC unless otherwise specified.)
Sym Parameter
Min Typ
Max
IIN VIN supply current
- 220 250
- 2.2 2.3
IOUT(OFF) Output current, off
- 4.0 10
- - 31.8
IOUT(ON) Output current, on
28.2 30.0 31.8
27.0 30.0 33.0
VEN(ON)
VEN(OFF)
CEN
IENL
IENH
tON
tRISE
tOFF
tFALL
Enable voltage, on
Enable voltage, off
Enable input capacitance
Enable low input current
Enable high input current
Enable on delay
Output current rise time
Enable off delay
Output current fall time
- - 0.8
2.4 -
-
- 5.0 10
- - 1.0
- - 1.0
- 2.0 2.4
- 1.0 1.2
- 440 800
- 170 250
Units Conditions
µA EN1-3 = 1
mA EN1-3 = 0
µA ENX = 1
ENX = 0, VOUT = 0 - 4.0V
mA ENX = 0, VOUT = 4.0 - 15V
ENX = 0, VOUT = 15 - 90V
V ---
V ---
pF ---
µA VEN = 0V
µA VEN = 5.0V
µs ---
µs ---
ns ---
ns ---
Timing
EN
VEN(ON)
tON
tRISE
IOUT
VEN(OFF)
tOFF
90% IOUT(ON)
10% IOUT(ON)
tFALL
Temperature Effects
1.05
1.00
0.95
0.90
0.85
0.80
-50
-40
0 25 50
100 120
Junction Temperature (°C)
150
1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com
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Load Regulation
1.20
1.00
0.80
0.60
0.40
0.20
00
scale change
5 10 15 20 40 60 80 100
VOUT (V)
Recommended PCB Layout
1cm2 exposed copper
1cm2 exposed copper
Underside plate soldered
to copper area
Exposed copper area
may be plated
CL330
Higher LED Current
VLL
Host
Controller
CIN
100nF
8
VIN
REG VDD
1 EN1
2 EN2
3 EN3
7
OUT1
6
OUT2
5
OUT3
CL330
GND
4
By paralleling outputs, higher LED currents can be achieved. In addition, linear dimming in 3 discrete steps may be obtained
by enabling 1, 2, or 3 outputs.
1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com
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CL330
Lowering CL330 Power Dissipation: Separate VIN Supply
VLL
Host
Controller
VIN
CIN
100nF
8
VIN
REG VDD
1 EN1
2 EN2
3 EN3
7
OUT1
6
OUT2
5
OUT3
CL330
GND
4
CL330 power dissipation may be lowered by supplying the CL330 from a voltage source (VIN) that is lower in voltage than
the LED supply (VLL).
Lowering CL330 Power Dissipation: Dropping Resistor
Host
Controller
VLL
RDROP
CIN
100nF
8
VIN
REG VDD
1 EN1
2 EN2
3 EN3
7
OUT1
CL330
6
OUT2
GND
4
5
OUT3
RDROP < VLL(MIN) - 6.5V
2.3mA
where: RDROP = Dropping resistance
VLL(MIN) = minimum supply voltage
1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com
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