TLD1125EL_15 Datasheet, PDF (15/36 Pages) Marl International Limited – Basic LED Driver

TLD1125EL
PWMI Pin
See Figure 10 for a typical external circuitry.
Note: In case of junction temperatures above T_j(CRT) (Pos. 11.2.16) the device provides a temperature dependent
current reduction feature as descirbed in Chapter 11.1.1. In case of output current reduction I_{IN_SET} is
reduced as well, which leads to increased turn on-times t_PWMI(on), because the C_PWMI is charged slower. The
turn off-time t_PWMI(off) remains the same.
V_BATT
R_PWMI C_PWMI
10kΩ
EN
VS
Internal
supply
Thermal
protection
PWMI
D
Output
control
C_D
IN_SET Current
adjust
Basic LED Driver
R_SET
OUT
GND
GND
Figure 10 Typical circuit using internal PWM unit
6.3
Electrical Characteristics Internal Supply / EN / PWMI Pin
Electrical Characteristics Internal Supply / EN / PWMI pin
Unless otherwise specified: V_S = 5.5 V to 40 V, T_j = -40 °C to +150 °C, R_SET = 12 kΩ 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.
6.3.1 Current consumption,
I_S(sleep)
–
0.1
2
µA ¹⁾ V_EN = 0.5 V
sleep mode
T_j < 85 °C
V_S = 18 V
V_OUT = 3.6 V
6.3.2 Current consumption,
I_S(on)
mA ²⁾ V_PWMI= 0.5 V
active mode
I_{IN_SET} = 0 µA
T_j < 105 °C
V_S = 18 V
V_OUT = 3.6V
–
–
1.4
V_EN = 5.5 V
–
–
0.75
–
–
1.5
V_EN = 18 V
1) _{REN = 10 kΩ between}
VS and EN-pin
Data Sheet
15
Rev. 1.0, 2013-08-08