ILD4001 Infineon Technologies, ILD4001 Datasheet - Page 16

• Manufacturer Part Number: ILD4001
• Manufacturer: Infineon Technologies
• Type: Buckr

Specifications of ILD4001

• Packages: SC74
• Vs (min): 4.5 V
• Vs (max): 42.0 V
• Iout (typ): 10.0 mA
• Iout (max): -

6.3
Analog Voltage Dimming
The voltage level of the EN/PWM pin can be used for analog dimming of the LED current. The analog dimming
characteristic graph is shown in
recommended voltage range at the EN/PWM pin is 1 V to 2 V. The maximum achievable LED current is defined
by resistor R
Below 0.4 V the ILD4001 is set to standby mode and the output is switched off. In standby mode ILD4001 doesn’t
pull low the V
10 - 100 kΩ shunt resistor to GND is required to avoid a floating gate of the MOSFET. Furthermore a gate
discharge time of about 1 µs is recommended.
Figure 3
Data Sheet
sense
Dimming of the LEDs
Analog Voltage Dimming (12V, 3 LEDs,
drive
1.6
1.4
1.2
0.8
0.6
0.4
0.2
. The maximum LED current will be achieved for
output signal driving the gate of the external MOSFET. Depending on gate capacitance driven a
1
0
1
110 mΩ, 68 μH
158 mΩ, 68 μH
75 mΩ, 47 μH
Figure
1.5
3. To achieve a linear change in LED current versus control voltage the
Step down LED Controller for high power LEDs
16
T
A
EN
=25°C) vs. R
2
[V]
V
EN
≥ 2.5 V as shown in
sense
2.5
Basic Application Information
Revision 2.0, 2011-06-09
Figure
4.
3
ILD4001