KC24AH Series
PWM DIM CONSTANT CURRENT OUTPUT
LED DRIVER
multi-country patent protection
RoHS
FEATURES
●
High efficiency up to 95%
●
Constant current output
●
Power LED driver
●
Wide input voltage range
●
PWM dimming
●
Remote ON/OFF
●
Short circuit protection
PRODUCT PROGRAM
Part
Number
KC24AH-300
KC24AH-350
KC24AH-500
KC24AH-600
KC24AH-700
Input Voltage(V)
Normal
24
24
24
24
24
Range
5.5-36
5.5-36
5.5-36
5.5-36
5.5-36
Output
Voltage
(VDC)
2-32
2-32
2-32
2-32
2-32
Current
(mA)
0-300
0-350
0-500
0-600
0-700
Dimming
control
PWM
PWM
PWM
PWM
PWM
Efficiency
(%,max)
95
95
95
95
95
SPECIFICATIONS
APPLICATIONS
The KC24AH Series is a step-down constant
current source designed for driving high power
LEDs. The output currents available are 300mA,
350mA, 500mA, 600mA, 700mA. The KC24AH
series is fully featured with very high efficiency,
wide input voltage range, high ambient operating
temperature,PWM dimming and Remote ON/OFF.
Item
Input Voltage
Recommended input voltage
Input filter
Output voltage range
Output current range
Output current accuracy
Output current stability
Temperature coefficient
Efficiency at full load
Vin=36V
2
±
5
±5
Test condition
absolute maximum
5.5
24
Min.
Typ.
Max.
40
36
Units
VDC
Capacitor
32
±8
±10
±
0.03
95
Continuous
300mA / 350mA
500mA/ 600mA/ 700mA
-40
-40
-55
85
71
125
100
470
MIL-HDBK-217F(+25°C)
2,000,000
Plastic (UL94-V0)
22.8*10.2*9.5
3.5
mm
g
μF
Hours
°C
VDC
See the selection guide ,while Vin-Vout>1.5-4V
Vin=24V, 5 LEDS
Vin=24V, 1LED to 5 LEDS
-40
°C
to+71
°C
ambient
%
%/°C
%
MODEL SELECTION
KC24AH-350
O u tp u t C u rr e n t
P a c k a g e S ty l e
In p u t Vo l ta g e
P r o d u c t S e r ie s
Short circuit protection
Operating temperature range
Storage temperature range
Maximum case temperature
Maximum capacitive Load
MTBF
Case Material
Dimensions
MORNSUN Science & Technology co.,Ltd.
Address: 2th floor 6th building, Huangzhou Industrial
District, Guangzhou, China
Tel: 86-20-38601850
Fax:86-20-38601272
Http://www.mornsun-power.com
Weight
PWM Dimming and ON/OFF Control
(let it open if not use)
Rem ote ON/OFF
Rem ote pin current
Quiescent input current in
Shutdown mode
PWM frequency
ON
OFF(shutdown)
Vc=5V
Vin=24V, V
c
<0.6V
Open or 2.8V<Vc<6V
Vc<0.6V
1
400
0.2
10
mA
μA
KHz
The copyright and authority for the interpretation of the products are reserved by Mornsun
Specifications subject to change without notice.
KC24AH -XXX
A/0-2009
Page 1 of 2
DIGITAL DIMMING CONTROL
PWM Digital Control Signal
1
0
Output current
PWM Digital Control Signal
1
0
Output current(LED appears bright)
1
0
PWM Digital Control Signal
1
0
Output current(LED appears dim)
1
0
This is a PWM type digital dimming, which you can control the output current by adjusting the pulse width of the PWM signal.
Io_set=Io_norm×D
Io_set refres to the wanted output current value.
Io_norm refers to the rated output current
D refers to the pulse width of the PWM signal
For example: we assume the rated output current is 300mA and wanted output current is 150mA, then the pulse width should be 0.5 from the
equation above. That is say if we keep the pulse width of PWM signal at 0.5, the output current will be kept at 150mA. It is natural for the driver to
generate a audibly noise in dimming process, because the frequency of the control circuit is within human audibly range (20Hz~20KHz).
TYPICAL APPLICATION CIRCUITS
PWM Dimming control circuit
Figure
1
+Vin
GND
EMI filter circuit
Figure
2
1
6
Figure
3
+Vin
PT C
PT C
C1
FILTER2T
1
6
C2
1
6
+Vin
KC24AH-XXX
4
3
Last LED
KC24AH-XXX
5
1st LED
GND
KC24AH-XXX
4
3
5
1st LED
Last LED
1st LED
Last LED
GND
5
4
3
1st LED
Last LED
In actual use, if necessary to protect LED, a PTC of positive temperature coefficient may be connect to the input end of every channel or all
channels, as shown in Figure 2.
OUTLINE DIMENSIONS & PIN CONNECTIONS
MECHANICAL DIMENSIONS
7. 62[0 .300 ]
2. 54[0.100 ]
22 .80 [0.8 98]
17 .78[ 0.70 0]
1 7.78 [0.7 00]
5
(B otto m View)
6
0. 50 [0 .020]
1
6
RECOMMENDED FOOTPRINT
∅
1.00 [
∅
0.039]
2.5 4 [0 .100 ]
10. 60[0 .417]
17. 20[0.677 ]
10. 20[0 .402 ]
4
3
1
3
4
5
9.50 [0.3 74]
(Side Vie w)
2.5 4 [0. 100]
4 .10 [0.1 61]
0 .50 [ 0.02 0]
10. 20[0 .401 ]
9.50[0. 374]
TUBE OUTLINE DIMENSIONS
25. 20[0 .99 2]
Note
:
Unit
:
m m[inch]
Pin section tolerances
:±
0.1m m[
±
0.039inch]
General tolerances
:±
0.25mm [
±
0.010inch]
FO O TPR IN T D E TA IL S
Fu n cti o n
C o m me n ts
Vi n
ON/OF F / PWM
0. 60[0 .024 ]
11.8 0[0. 465 ]
7.6 2[0. 300 ]
Pin
1
3
4
5
6
D C Su p p l y
L e a ve o p e n i f n o t u se
D o n o t c o n n e c t to -Vo u t
L ED C a th o d e c o n n e cti o n
L ED An o d e co n n e c ti o n
G ND
- Vo u t
+ Vo u t
Note
:
Unit
:
m m[inch]
General tolerances
:±
0.5m m[
±
0.020inch]
L=530m m[20.866inch]
L=220m m[8.661inch]
Tube Quantity: 50pcs
Tube Quantity: 20pcs
Note:
1. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
2. In this datasheet, all the test methods of indications are based on corporate standards.
The copyright and authority for the interpretation of the products are reserved by Mornsun
Specifications subject to change without notice.
KC24AH -XXX
A/0-2009
Page 2 of 2
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