KC24AH Series
PWM DIM CONSTANT CURRENT OUTPUT
LED DRIVER
FEATURES
●
High efficiency up to 96%
●
Constant current output
●
Power LED driver
●
Wide input voltage range
●
PWM dimming
●
Remote ON/OFF
●
Short circuit protection
RoHS
PRODUCT PROGRAM
Part
Number
KC24AH-300
KC24AH-350
KC24AH-500
KC24AH-600
KC24AH-700
Input Voltage(V)
Nominal
24
24
24
24
24
Range
6.5-36
6.5-36
6.5-36
6.5-36
6.5-36
Output
Voltage
(VDC)
2-30
2-30
2-30
2-30
2-30
Current
(mA)
0-300
0-350
0-500
0-600
0-700
Dimming
control
PWM
PWM
PWM
PWM
PWM
Efficiency
(%,max)
96
96
96
96
96
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.
COMMON SPECIFICATIONS
Item
Utmost input voltage
Recommended input voltage
Input filter
Output voltage range
Input-output voltage drop
Output current range
Output current accuracy
Output current stability
Vin=36V
2
4.5
See the selection guide ,while Vin-Vout>4.5V
Vin=24V, 5 LEDS
Vin=24V, 1LED to 5 LEDS
-40
°C
to+71
°C
ambient
±7
±8
±12
%
±15
±
0.03
96
Continuous
300mA / 350mA
Operating temperature range
500mA/ 600mA/ 700mA
Storage temperature range
Maximum case temperature
Maximum capacitive Load
MTBF
MIL-HDBK-217F(+25°C)
470
2,000,000
Plastic (UL94-V0)
22.8*10.2*9.5
3.5
mm
g
-40
-55
71
125
100
μF
Hours
°C
-40
85
%/°C
%
Test condition
≤10
seconds
Min.
5.5
6.5
24
Typ.
Max.
40
VDC
36
Capacitor(2μF)
30
VDC
6.5
Units
MODEL SELECTION
Temperature coefficient
Efficiency at full load
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
MORNSUN Science & Technology Co.,Ltd.
Address: No. 5, Kehui St. 1, Kehui development
center, Science Ave., Guangzhou Science City,
Luogang district, Guangzhou,P.R.China.
Tel: 86-20-38601850
Fax:86-20-38601272
Http://www.mornsun-power.com
Case Material
Dimensions
Weight
PWM Dimming and ON/OFF Control
(let it open if not use)
ON
Rem ote ON/OFF
OFF(shutdown)
Rem ote pin current
Quiescent input current in
Shutdown mode
PWM frequency
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/4-2012
Page 1 of 3
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). In order to
avoid the human eye can observe the LED flashes, the PWM dimming frequency is recommended to set above 100Hz.
TYPICAL APPLICATION CIRCUITS
PWM Dimming control circuit
+Vin
GND
1
KC24AH-XXX
4
3
6
5
1st LED
+Vin
GND
1
KC24AH-XXX
4
3
6
PTC
PTC
1st LED
5
1st LED
Last LED
Last LED
Last LED
Figure 1
Figure 2
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.
EMC RECOMMENDED CIRCUIT
+Vin
C1
FILTER2T
1
6
C2
KC24AH-XXX
GND
5
4
3
1st LED
Last LED
(Figure 3) EMI filter circuit
LCM
+Vin
Tvs
C0
C1
C2 DIM
*
R1
R2
VIN
VO+
+Vout
Load
KC24AH-700
DIM
C3
C4
C5
GND
GND
VO-
-Vout
1
2
(Figure 4) EMI/RFI conducted EN55015 recommended circuit
Note:1.DIM pin is the module’s PWM dimming pin as shown in Figure 4.
2.While adding circuit
②,it
may extend the PWM dimming output reaction time.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
KC24AH -XXX
A/4-2012
Page 2 of 3
EMC level:
Item
EMI
conducted
ESD
Surge
EFT
Standard
EN 55015
IEC61000-4-2:2001
IEC61000-4-5:2004
IEC61000-4-4:2004
Level
Power
port
Level 2
Level 2
Level 2
Predicate
Qualification
perf. Criteria B
perf. Criteria B
perf. Criteria B
Remark
Add external circuit
①
±4KV
Add external circuit
②
±1KV
Add external circuit
①
±1KV
Add external circuit
①
Recommended parameter:
Components
Tvs
LCM
C0
C1
C2
C3
C4
C5
R1、R2
Specifications
SMCJ48A,1500W（Bringtking）
UU9.8P4M15-00（15mH）(Emei)
470μF/50V（CapXon）
4.7μF/50V
1.0μF/50V
470pF/100V
270pF/100V
100pF/100V
1210
1210
(TORCH)
(TORCH)
0805 (TORCH)
0805 (TORCH)
0805 (TORCH)
680Ω 0805(can replaced by
inductance or magnetic bead)
OUTLINE DIMENSIONS & PIN CONNECTIONS
MECHANICAL DIMENSIONS
0.50 [0.020]
RECOMMENDED FOOTPRINT
9.50 [ 0.374]
(Front View)
∅
1.00 [
∅
0.039]
1
6
4 .1 0 [0 .1 6 1 ]
∅
0.50 [0.020]
3
4
5
7.62[0.300]
2.54[0.100]
N ote
:
g rid
:2.54*2.54
m m
.
2 2 .8 0 [0 .8 9 8 ]
1 7 .7 8 [0 .7 0 0 ]
TUBE OUTLINE DIMENSIONS
5
2 5 .5 0 [1 .0 0 4 ]
10. 20[0.402]
4
3
(Bottom View)
17.50[0. 689]
6
11.50[0.45 3]
11 .5 0 [0 .4 5 3 ]
N ote:
U nit: mm [inch]
General tolerances:± 0.5mm[
±
0.0 20inch]
L=530m m[20 .866inch] D evice s pe r tube q uantity: 50pcs
L=220m m[8.661inch] De vices per tub e quantity: 20p cs
S hort tube inner packa ging dimensions: L*W *H =255 *170*80mm
S hort tube o uter packa ging dimensions(with six inne r packagin g boxes):
L*W *H =375*280*270mm
Long tube inner packaging dimensions: L*W *H =58 0*200*100mm
Long tube ou ter packaging dimensions(with two inner pa ckaging boxes):
L*W *H =600*215*220mm
Long tube ou ter packaging dimensions(with thre e inne r packaging boxes):
L*W *H =600*215*325mm
1
Pin
1
3
4
5
6
FOOTPRINT DETAILS
Function
Comments
DC Supply
Vin
O N/O F F /P W M
Leave open if not use
Do not connect to -Vout
GND
LED Cathode connection
-Vout
+Vout
LED Anode connection
N ote
:
U nit
:
m m[in ch]
P in dia meter tolerances:
±
0.10mm [±0.00 4inch]
General toleran ces:
±
0.2 5mm[
±
0.010inch]
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/4-2012
Page 3 of 3
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