TLE4309 Datasheet, PDF (6/12 Pages) Infineon Technologies AG – Adjustable Linear Low Dropout LED Driver

TLE4309
Table 5
Electrical Characteristics
V_I = 13.5 V; V_PWM ≥ V_PWM,H; -25 °C < T_j < 125 °C;
all voltages with respect to ground; unless otherwise specified
Parameter
Symbol Limit Values Unit Test Condition
Min. Typ. Max.
Output
Output current
I_Q
Output current limit
Dropout voltage
Reference
I_Qmax
V_dr
171 178 185 mA (V_Q-V_REF)¹⁾ = 6.6 V;
R_REF = 1.0 Ω
438 456 474 mA (V_Q-V_REF)¹⁾ = 6.6 V;
R_REF = 0.39 Ω
–
600 –
mA R_REF = 0 Ω
–
0.35 0.7 V I_Q = 300 mA
Reference Voltage V_REF
Reference Voltage
Reference Input
Current
V_REF
I_REF
172 178 184 mV 0.39 < R_REF < 1.0 Ω
T_j = 25 °C
171 178 185 mV 0.39 < R_REF < 1.0 Ω
-1 0.1 1
µA V_REF = 180 mV
Current Consumption
Current consumption I_q,OFF –
off mode
Current consumption I_q
–
PWM / ENABLE
0.1 2
12 22
µA PWM/EN = L,
T_j < 85 °C
mA V_Q = 6.6 V; R_REF = 0.47 Ω
PWM high level valid V_PWM,H 2.6
PWM low level valid V_PWM,L –
PWM input current I_PWM,H –
high level
–
–
V–
–
0.7 V –
220 500 µA V_PWM = 5.0 V
PWM input current I_PWM,L -1
–
1
µA V_PWM = 0.0 V
low level
Turn on delay time t_PWM,ON 0
15 40 µs 70% of I_Qnom
Turn off delay time t_PWM,OFF 0
15 40 µs 30% of I_Qnom
1) (V_Q - V_REF) equals the forward voltage sum of the connected LEDs, see figure 1.
Datasheet
6
Rev. 1.0, 2007-03-20