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date
11/28/2012
page
1 of 6
SERIES: VLD25-DIP │ DESCRIPTION: LED DRIVER
FEATURES
•
•
•
•
•
•
•
power LED driver
wide input and output voltage range
DIP package
constant current output
PWM dimming and analog dimming
short circuit protection
high efficiency up to 95%
input
voltage
output
voltage
output
current
ripple and
noise
range
(Vdc)
range
(Vdc)
range
(mA)
max
(mVp-p)
VLD25-300-DIP
5.5 ~ 46
3.3 ~ 36
0 ~ 300
120
PWM+analog
95
VLD25-350-DIP
5.5 ~ 46
3.3 ~ 36
0 ~ 350
120
PWM+analog
95
VLD25-500-DIP
5.5 ~ 46
3.3 ~ 36
0 ~ 500
120
PWM+analog
95
VLD25-600-DIP
5.5 ~ 46
3.3 ~ 36
0 ~ 600
120
PWM+analog
95
VLD25-700-DIP
5.5 ~ 46
3.3 ~ 36
0 ~ 700
120
PWM+analog
95
MODEL
PART NUMBER KEY
VLD25 - XXX -DIP
Base Number
Output Current
cui.com
dimming
control
efficiency
typ
(%)
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CUI Inc │ SERIES: VLD25-DIP │ DESCRIPTION: LED DRIVER
date 11/28/2012 │ page 2 of 6
INPUT
parameter
conditions/description
min
operating input voltage
absolute max before device failure
operating input range
5
5.5
quiescent input
current in off mode
Vin = 24 V, Vc < 0.6 V
filter
typ
max
units
24
55
46
Vdc
Vdc
400
μA
capacitor
1
μF
remote on/off
dc-dc ON
dc-dc OFF
open or 2.8 V < Vc < 6V
Vc < 0.6 V
remote pin current
Vc = 5V
PWM frequency
input voltage - analog dimming
Vin = 5.5 ~ 4.6 V
control voltage analog dimming
full on
full off
driving current analog dimming
Vc = 5 V
0
0.15
4.3
1
mA
0.2
kHz
15
V
0.25
4.7
V
V
0.2
A
max
units
36
Vdc
3
4
Vdc
±3
±5
±5
±7
%
%
100
%
±1
%
±0.015
%/°C
1,000
μF
max
units
max
units
85
71
°C
°C
0.20
4.5
OUTPUT
parameter
conditions/description
min
voltage range
Vin = 46 V , Vo = 3.3 V ~ 36 V
3.3
voltage drop
Vin = 5.5 ~ 46 V, 1 ~ 10 LED
current accuracy
300~600 mA
700 mA
output current range analog dimming
Vin = 5.5 ~ 46 V, 1 ~ 10 LED
current stability
Vin = 46 V, Vo = 3.3 V ~ 36 V
temperature coefficient
-40 ~ 71°C ambient
2
typ
0
capacitive load
PROTECTIONS
parameter
conditions/description
short circuit protection
continuous automatic recovery
min
typ
SAFETY AND COMPLIANCE
parameter
conditions/description
EMI/EMC
EN 55015 power port, CISPR22 Class B, IEC/EN 61000-4-(2, 3, 4, 5, 6)
RoHS compliant
yes
ENVIRONMENTAL
parameter
conditions/description
min
operating temperature
300/350 mA
500/600/700 mA
-40
-40
storage temperature
-55
maximum case temperature
cui.com
typ
125
°C
100
°C
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CUI Inc │ SERIES: VLD25-DIP │ DESCRIPTION: LED DRIVER
date 11/28/2012 │ page 3 of 6
DERATING CURVE
Operating Temp.( C )
MECHANICAL
parameter
conditions/description
dimensions
0.898 x 0.402 x 0.535 inch (22.80 x 10.20 x 13.60 mm)
min
case material
epoxy resin (UL94-V0)
typ
weight
max
units
4.3
g
MECHANICAL DRAWING
2.54 [0.100]
7.62 [0.300]
unit: mm(inch)
Pin tolerances: ±0.10mm(±0.039inch)
General tolerances: ±0.25mm(±0.010inch)
2 2.80 [0.898]
17.78 [0.700]
5
10.20 [0.402]
4
3
(Bottom View)
2
6
1
9.50 [0.374]
Side View
0.50 [0.020]
9.50 [0.374]
10.20 [0.401]
4.10 [0.161]
∅0.50 [0.020]
7.62 [0.300]
PIN CONNECTIONS
RECOMMENDED FOOTPRINT (TOP VIEW)
Function
1
Vin
2
analog dimming
3
ON/OFF/PWM
1
4
GND
2
5
-Vout
3
6
+Vout
∅0.80 [0.031]
1 7 .7 8 [0 .7 0 0 ]
6
4
5
2 .5 4 [0 .1 0 0 ]
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2.54 [0.100]
Pin
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CUI Inc │ SERIES: VLD25-DIP │ DESCRIPTION: LED DRIVER
date 11/28/2012 │ page 4 of 6
APPLICATION NOTES
1.
Typical Application Circuits
(Analog Dimming Control)
(Analog Dimming Control)
2
1
+Vin
6 +Vout
6 +Vout
VLD25-DIP
VLD25-DIP
GND
2
1
+Vin
GND
5 -Vout 1st LED
4
P TC
P TC
5 -Vout
4
1st LED
3
3
Last LED
Last LED
( PWM Di m/ON/O FF)
(PWM D im/ON / OFF)
Series Application
Parallel-series Application
To protect the LED(s), you could connect a PTC to input of all channels as shown in application circuit.
Note: Negative output terminal should not conneted to GND. Module may be damaged.
2.
Digital Dimming Control
PWM Digital Control Signal
PWM Digital Control Signal
PWM Digital Control Signal
1
1
1
0
0
0
Output Current(LED appears bright)
Output Curr ent
Output Current(LED appears dim)
1
1
0
0
Formula for output current:
Io,set =
(DT-0.8)
T
Io,set refers to the expected output current value.
Io,norm refers to the rated output current
D refers to the pulse width of the PWM signal
T refers to the cycle of the PWM signal
Io,nom
Note: This formula is only supplied as a reference and the output current may be deviated from for different load conditions. The Ton(min) of PWM signal must
be greater than 0.8ms, otherwise the driver cannot be operated normally. It is natural for the driver to generate audible noise during dimming process
because the frequency of the control circuit is within human audible range (20Hz~20kHz). In order to make the LED flashes not visible to human eye, the
PWM dimming frequency is recommended to be set above 100Hz. PWM curve (Vin=24 V, 5 LEDs)
Analog Dimming Control and Application Example
1
+Vin
4
GND
6
VLD25-DIP
5
1st LED
15K
0-10V
On/Off
(Optional)
2
6K8
Analog Input Voltage
Ouput Current
3.
3
Last LED
9
9
9
9
9
9
Voltage Control (0-15 V max.)
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9
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CUI Inc │ SERIES: VLD25-DIP │ DESCRIPTION: LED DRIVER
4.
date 11/28/2012 │ page 5 of 6
EMC Recommended Circuit
L1
1
㻗 Vi n
EMI/EMC recommended circuit
Tvs
C1
C2
C3
R1
DIM 㻖
3
6 +Vou t
VLD25-DIP
C4
C6
4
G ND
5 -Vou t
1st LED
1
C5
RECOMMENDED PARAMETERS
COMPONENTS
SPECIFICATIONS
Tvs
SMC51A, 1500 W (ON)
L1
CD53-82μH (CEAIYA)
C1
470μF/100V (NCC)
C2
225K/50V 1210 X7R (TORCH)
C3
104K/50V 0805 X7R (TORCH)
C4
105K/50V 0805 X7R (TORCH)
C5
102K/2000V 1210 (TDK)
C6
470pF/100V 0805 (TORCH)
R1
680Ω 0805
(can be replaced by inductance
or magnetic bead)
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Last LED
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CUI Inc │ SERIES: VLD25-DIP │ DESCRIPTION: LED DRIVER
date 11/28/2012 │ page 6 of 6
REVISION HISTORY
rev.
description
date
1.0
initial release
10/15/2012
1.01
misc. updates
11/02/2012
1.02
added product photo
11/28/2012
The revision history provided is for informational purposes only and is believed to be accurate.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
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[email protected]
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical
component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to
affect its safety or effectiveness.
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