ILD4180 Infineon Technologies, ILD4180 Datasheet - Page 12

• Manufacturer Part Number: ILD4180
• Description: LED Drivers MCREL 1.8A DC/DC
• Manufacturer: Infineon Technologies
• Type: Buckr

Specifications of ILD4180

• Packages: PG-DSO-8
• Vs (min): 4.75 V
• Vs (max): 45.0 V
• Iout (typ): 1,800.0 mA
• Iout (max): 1,800.0 mA
• Lead Free Status / Rohs Status: Details
• Other names: ILD4180XT

8.4
Figure 5
Note: This is a very simplified example of an application circuit. The function must be verified in the real application
The output voltage of the ILD4180 can be programmed by a voltage divider connected to the feedback pin FB.
The divider cross current should be 300 µA at minimum, therefore the maximum
For the desired output voltage level
Datasheet
PWM Dimming
V
connect to µC
or directly to VS
S
Optional
C
= 4.75V to 45V
Parts
COMP 2
Constant Output Voltage Mode for LED applications
Application Diagram (constant voltage mode)
C
R
COMP
COMP
C
S
8
7
1
3
R
EN
COMP
VS
PWMI
2
V
≤
CC
V
ILD4180
FB
,
GND
R
ILD5085
2
/
1
I
calculates then (neglecting the small FB input current):
R2
R
BUO
1
BDS
-->
FB
=
R
R
2
4
5
6
⎛
⎝
2
12
V
--------- - 1
V
≤ 0.6V / 300 µA = 2 kΩ
CC
FB
C
bootstrap
V
–
FB
D
⎞ .
⎠
BU
L
BU
R
R
1
2
C
BU1
C
R
BU2
2
V
calculates:
CC
Application Information
R
Rev. 1.1, 20011-01-25
balance1
SPIDER-LS
R
ILD4180
TLE 7240 SL
balance2