TLD1125EL_15 Datasheet, PDF (31/36 Pages) Marl International Limited – Basic LED Driver

TLD1125EL
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.
11.2
Electrical Characteristics Power Stage
Electrical Characteristics Power Stage
Unless otherwise specified: V_S = 5.5 V to 18 V, T_j = -40 °C to +150 °C, V_OUT = 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.
11.2.1 Output leakage current
I_OUT(leak)
µA
–
–
21
–
–
9
11.2.2 Output leakage current in -I_{OUT(leak,B2B)} –
–
150 µA
boost over battery setup
11.2.3 Reverse output current
-I_OUT(rev)
–
–
3
µA
11.2.4 Output current accuracy k_LT
limited temperature range
11.2.5 Output current accuracy k_ALL
over temperature
11.2.6
11.2.7
Voltage drop over power
stage during current control
V_PS(CC) = V_S - V_OUT
Required output voltage for
current control
V_PS(CC)
V_OUT(CC)
11.2.8 Maximum output current I_OUT(max)
2092 2250 2408
1800 2250 2700
1980 2250 2520
1710 2250 2790
0.75 –
–
V
2.3
–
–
V
360 –
–
mA
V_EN = 5.5 V
I_{IN_SET} = 0 µA
V_OUT = 2.5 V
T_j = 150 °C
1) _{Tj = 85 °C}
1) _{VEN = 5.5 V}
I_{IN_SET} = 0 µA
V_OUT = V_S = 40 V
1) _{VS = -16 V}
Output load: LED with
break down voltage
< - 0.6 V
1)_{Tj = 25...115 °C}
V_S = 8...18 V
V_PS = 2 V
R_SET = 12 kΩ
R_SET = 30 kΩ
1) _{Tj = -40...115 °C}
V_S = 8...18 V
V_PS = 2 V
R_SET = 6...12 kΩ
R_SET = 30 kΩ
1) _{VS = 13.5 V}
R_SET = 12 kΩ I_OUT ≥ 90%
of (k_LT(typ)/R_SET)
1) _{VS = 13.5 V}
R_SET = 12 kΩ I_OUT ≥ 90%
of (k_LT(typ)/R_SET)
R_SET = 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
31
Rev. 1.0, 2013-08-08