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PDF iML8683 Data sheet ( Hoja de datos )
| Número de pieza | iML8683 | |
| Descripción | Three Terminal Current Controller | |
| Fabricantes | IML | |
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iML8683
Three Terminal Current Controller
General Description
The iML8683 is a Three Terminal Current
Controller (TTCC) for regulating the current flowing
through an LED string.
The application of the iML8683 is configured in
parallel with an LED string. The iML8683 can work
as voltage controlled current source, current
regulator, or cut-off. It is suitable for the applications
adopting periodical AC voltage source.
The PCB layout is also very flexible to meet
various shape requirements. It is especially suitable
for replacing incandescent light bulb and linear type
fluorescent lamp.
Features
System
- All solid state components.
- No electrolytic capacitor required.
- Compact size to minimize mechanical cost.
- Driver-on-board and chip-on-board available which
minimize process flow and assembly cost.
- High PF and Low THD performance.
- High efficiency achieved.
- Flexible PCB layout style.
- Wide range of LED forward voltage selection.
- Distributed heat to several chips.
- TRIAC dimmable.
Chip
- 88V input sustaining voltage.
- <3V dropout voltage for up to 150mA regulating current
Typical Application Circuit
VAC
BD
U1
iML8683
Applications
AC LED lighting engine.
LED light bulb.
LED1 LED light tube.
LED down-light and ceiling light
LED flat panel light
LED2
Pin Diagram (Top View)
Rz
U2
iML8683
LED3
Q1
iML3160
ZD U3
iML8683
CS 1
NC 2
A3
6 MS1
5 MS2
4K
DFN- 2mmx2mm-6L
CS MS1
54
Rectified
VAC
ILED
123
A K MS2
SOT-89- 5L
t
© 2014 Exar Corporation
t
8683DOC rev 1.2 1
1 page  
iML8683
Three Terminal Current Controller
Electrical Characteristics
Unless otherwise noted, typical values are @ TA = 25oC.
Parameter
Symbol
Test Conditions
Min
Option C1
38.4
Peak Regulating Current
*Note 1,2
IPEAK0
VAK=5V,
Mode 0
(MS1/ MS2
connected to K)
Option C2
Option C3
Option D1
Option D2
63.4
49.9
76.8
124.8
Current Ratio of Mode
Selection
*Note 1
Regulating Current Line
Regulation *Note 3
CS Pin Voltage
CS Pin Voltage Line
Regulation*Note 4
Dropout Voltage *Note 5
Thermal Protection Trip
Temperature*Note 6
Thermal Protection Mode
Regulating Current
IPEAK0/IPEAK0
IPEAK1/IPEAK0
IPEAK2/IPEAK0
IPEAK3/IPEAK0
△ILR/IPEAKx
(x=0~3)
VCS
△VLR/VCS
VDROP
TTP
ITP/IPEAKx
(x=0~3)
Option D3
Option C1/C2/C3/D1/D2/D3,
Mode 0, VAK=5V
(MS1/ MS2 connected to K)
Option C1/C2/C3/D1/D2/D3,
Mode 1, VAK=5V
(MS1 open, MS2 connected to K)
Option C1/C2/C3/D1/D2/D3,
Mode 2, VAK=5V
(MS2 open, MS1 connected to K)
Option C1/C2/C3/D1/D2/D3,
Mode 3, VAK=5V
(MS1/ MS2 open)
Option C1/C2/C3/D1/D2/D3,
Mode 1~3, VAK=5V and 40V
Option C1/C2/C3/D1/D2/D3,
Mode 0, VAK=5V and 40V
Option ADJ, Mode 0,
VAK=5V, with 1KΩ external
resistor between CS and K
Option ADJ,
Mode 1~3, VAK=5V and 40V
with 1KΩ external resistor
between CS and K
Option ADJ,
Mode 0, VAK=5V and 40V
with 1KΩ external resistor
between CS and K
Mode 0 (MS1/ MS2 connected to K)
When TJ is higher than TTP, the
peak regulating current
decreases to ITP linearly.
TJ = 175C
99.8
75
50
32
-4
0.26
-4
120
Typ
40
66
52
80
130
104
100
80
55
35
±1
-8
0.27
±1
-8
2.8
130
50
Max Unit
41.6
68.6
54.1
mA
83.2
135.2
108.2
85
%
60
38
±2
%
-15
0.28 V
±2 %
-15 %
3.8 V
C
%
© 2014 Exar Corporation
8683DOC rev 1.2 5
5 Page 
SOT-89-5L
Footprint Suggestion
B
B1
D1 D
D2
C
θ
D
θ
P1
P2
M
B2
A
C
JA
iML8683
Three Terminal Current Controller
SYMBOLS
A
b
b1
c
D
D1
E
E1
e
e1
L
MIN.
MAX.
1.40 1.60
0.32 0.52
0.36 0.56
0.35 0.44
4.40 4.60
1.40 1.80
2.30 2.60
3.94 4.25
1.50 TYP
2.90 3.10
0.90 1.10
UNIT: MILLIMETERS
127.5 C / W
SYMBOLS
A
Footprint
Dimension
5.20
B 4.80
B1 3.60
B2 0.25
C 1.35
D 0.70
D1 1.90
D2 1.30
M 3.70
P1 1.50
P2 3.00
θ 45°
UNIT: MILLIMETERS
© 2014 Exar Corporation
8683DOC rev 1.2 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet iML8683.PDF ] | |
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