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TLD1121EL_15 Datasheet, PDF (26/31 Pages) Marl International Limited – Basic LED Driver
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TLD1121EL
Power Stage
Note: Due to the reverse battery protection a reverse protection diode for the light module may be obsolete. In case
of high ISO-pulse requirements and only minor protecting components like capacitors a reverse protection
diode may be reasonable. The external protection circuit needs to be verified in the application.
9.2
Electrical Characteristics Power Stage
Electrical Characteristics Power Stage
Unless otherwise specified: VS = 5.5 V to 18 V, Tj = -40 °C to +150 °C, VOUT = 3.6 V, all voltages with respect to
ground, positive current flowing into pin for input pins (I), positive currents flowing out of the I/O and output pins
(O) (unless otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
9.2.1 Output leakage current
IOUT(leak)
µA
–
–
21
–
–
9
9.2.2 Output leakage current in -IOUT(leak,B2B) –
–
150 µA
boost over battery setup
9.2.3 Reverse output current
-IOUT(rev)
–
–
3
µA
9.2.4 Output current accuracy kLT
limited temperature range
9.2.5 Output current accuracy kALL
over temperature
9.2.6
9.2.7
Voltage drop over power
stage during current control
VPS(CC) = VS - VOUT
Required output voltage for
current control
VPS(CC)
VOUT(CC)
9.2.8 Maximum output current IOUT(max)
2092 2250 2408
1935 2250 2565
2092 2250 2408
1935 2250 2565
0.75 –
–
V
2.3
–
–
V
360 –
–
mA
VEN = 5.5 V
IIN_SET = 0 µA
VOUT = 2.5 V
Tj = 150 °C
1) Tj = 85 °C
1) VEN = 5.5 V
IIN_SET = 0 µA
VOUT = VS = 40 V
1) VS = -16 V
Output load: LED with
break down voltage
< - 0.6 V
1)Tj = 25...115 °C
VS = 8...18 V
VPS = 2 V
RSET = 6...12 kΩ
RSET = 30 kΩ
1) Tj = -40...115 °C
VS = 8...18 V
VPS = 2 V
RSET = 6...12 kΩ
RSET = 30 kΩ
1) VS = 13.5 V
RSET = 12 kΩ IOUT ≥ 90%
of (kLT(typ)/RSET)
1) VS = 13.5 V
RSET = 12 kΩ IOUT ≥ 90%
of (kLT(typ)/RSET)
RSET = 4.7 kΩ
The maximum output
current is limited by the
thermal conditions.
Please refer to
Pos. 4.3.1 - Pos. 4.3.3
Data Sheet
26
Rev. 1.1, 2015-03-19
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