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tm
TE
CH
T8611
High Voltage Constant-Current Driver
FEATURES
GENERAL DESCRIPTION
• Wide operating voltage range : 5V to 90V
• Output current tolerance: ±10%
• Connected in parallel for higher current
• RoHS and green compliant packages:
SOT-89 and SOT-23
The T8611 is a simple, high voltage, linear
current regulator. It drives LEDs at
15mA~25mA(±10%) at an input voltage of
5V~90Vdc. The T8611 can be used as a
constant current source or a constant current
sink. Multiple T8611 can be connected in
parallel to supply higher constant currents,
such as double or higher current.
For wider application, the T8611 is available
in SOT-89 and SOT-23.
APPLICATIONS
• LED Driver
• LED traffic light
• Constant current source or current sink
• Signage
• Decorative LED lamp
TM Technology, Inc. reserves the right
to change products or specifications without notice.
PART NUMBER EXAMPLES
Output
PACKAGE
Current
T8611-15AXG 15mA
SOT-89
PART NO.
P. 1
T8611-20AXG
20mA
SOT-89
T8611-25AXG
25mA
SOT-89
T8611-15BXG
15mA
SOT-23
T8611-20BXG
20mA
SOT-23
T8611-25BXG
25mA
SOT-23
Publication Date: JAN. 2010
Revision: A
tm
TE
CH
T8611
PIN ARRANGEMENT(Top view)
VB
VB
3
1
2
N/C
VB
VA
VA
SOT-89
N/C
SOT-23
PIN DESCRIPTION
SYMBOL
SOT-89
SOT-23
VA
VB
N/C
1
2
3
1
3
2
DESCRIPTION
Supply Voltage, Anode.
Circuit Common, Cathode.
No Connection.
TM Technology, Inc. reserves the right
to change products or specifications without notice.
P. 2
Publication Date: JAN. 2010
Revision: A
tm
TE
CH
T8611
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Value
Unit
Voltage on any pin relative to GND
VIN
100
V
Operating Temperature Rang
TA
-40 to +85
°C
TLEAD
300
°C
TS
-55 to +150
°C
Maximum Soldering Temperature (at leads, 10 sec)
Storage Temperature Rang
PD
θJA
Continuous Power Dissipation ( TA = +25°C )
θJC
SOT-89
1.3
SOT-23
0.15
SOT-89
300
SOT-23
103
SOT-89
100
SOT-23
38
TJ
W
°C/W
°C/W
-40~125
°C
Min. Typ. Max
5
90
Unit
V
13.5
15
16.5
mA
18
20
22
mA
22.5
25
27.5
mA
Electrical Characteristics
(Typical values are at TA =25°C)
Symbol
Description
VAB Operating voltage range
IAB
RAB
Regulated Constant DC current
Conditions
power supply input
VAB=5~90V
Dynamic Resistance
TM Technology, Inc. reserves the right
to change products or specifications without notice.
T8611-15
T8611-20
T8611-25
TBD
P. 3
Ω
Publication Date: JAN. 2010
Revision: A
tm
TE
CH
T8611
TYPICAL APPLICATION CIRCUITS
V CC
V AB= min. V alue - M ax. V alue
VA U2
U1
Typical Current
VB
VA Un
VB
VB
Typical Current
VA
Typical Current
C1
C_PO L
V CC
V AB= min. V alue - M ax. V alue
VA U2
VB
VA Un
VB
Typical Current
VB
U1
Typical Current
VA
Typical Current
C1
C_PO L
Total Current = Typical Current X Un
TM Technology, Inc. reserves the right
to change products or specifications without notice.
P. 4
Publication Date: JAN. 2010
Revision: A
tm
TE
CH
T8611
PACKAGE DIMENSIONS
SOT-89
D
POLISHED(2X)
D1
Symbol
E
B1
1
3
2
H
L
C
B
10'(2X)
A
B
B1
C
D
D1
E
H
e
e1
L
Dimension in mm
Min.
Max.
1.40
1.60
0.44
0.56
0.36
0.48
0.35
0.44
4.40
4.60
1.35
1.83
2.29
2.60
3.94
4.25
1.50 BSC
3.00 BSC
0.89
1.2
A
e
e1
TM Technology, Inc. reserves the right
to change products or specifications without notice.
P. 5
Publication Date: JAN. 2010
Revision: A
tm
TE
CH
T8611
PACKAGE DIMENSIONS
SOT-23
TM Technology, Inc. reserves the right
to change products or specifications without notice.
P. 6
Publication Date: JAN. 2010
Revision: A