ILD 4035 E6327 Infineon Technologies, ILD 4035 E6327 Datasheet - Page 14

• Manufacturer Part Number: ILD 4035 E6327
• Description: LED Drivers LED DRIVER
• Manufacturer: Infineon Technologies

Specifications of ILD 4035 E6327

• Low Level Output Current: 350 mA
• High Level Output Current: 500 mA
• Operating Supply Voltage: 4.5 V to 42 V
• Maximum Power Dissipation: 1000 mW
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Package / Case: SC-74-6
• Minimum Operating Temperature: - 65 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ILD4035E6327XT

5
This section covers the basic information required for calculating the parameters for a certain LED application.
For detailed application information please check the Application Note AN215 (Driving 1 W LEDs with ILD4035)
or visit our web site http://www.infineon.com/led.appnotes
5.1
The average output current for the LEDs is set by the external sense resistor
resistor, a first approximation can be calculated using this formula.
The
Figure 4
Example Calculation 1
V
=>
I
=>
Example Calculation 2
V
=>
I
=>
An easy way to achieve these resistor values is to connect standard resistors in parallel
5.2
Typical operating conditions
All parameters have been measured at
Analog voltage dimming
The analog dimming characteristic graph is shown in Figure 5. To achieve a linear change in LED current versus
control voltage, the recommended range of voltage at En/PWM pin 3 is from 0.8 V to 2.5 V
R
LED
LED
Data Sheet
s
s
sense
= 12 V,
= 24 V,
V
R
V
R
V
= 350 mA
= 350 mA
sense
sense
sense
sense
sense
= 333 mΩ, L= 100 μH
= 118 mV
= 337 mΩ
= 100 mV
= 286 mΩ
is dependent on the supply voltage
V
V
fLED
fLED
Basic Application Information
Setting the average LED current
ILD4035; Rsense Calculation
Dimming of the LEDs
= 3 V, 3 LEDs in series
= 3 V, 6 LEDs in series
T
amb
= 25 °C, unless otherwise specified.
V
s
R
and the number of LEDs in series.
sense
14
=
V
I
sense
LED
R
sense
Basic Application Information
. To calculate the value of this
Revision 1.0, 2010-11-11
350 mA LED Driver
ILD4035