ILD8150/ILD8150E
LED driver IC for high power LEDs with hybrid dimming down to 0.5%
Features
•
•
•
•
•
•
•
•
•
•
•
DC/DC buck with hysteretic current regulation
Output current up to 1.5 A DC
Integrated 80 V high-side MOSFET switch with low
R
ON
Hybrid dimming to 0.5% of the target current
Wide operating voltage range 8 V to 80 V
Cycle-by-cycle current limitation
Under-voltage lockout
Thermal protection
Flicker free operation
Digital soft-start
Pull-down transistor to avoid LED glowing
Potential applications
•
Electronic Control Gear (ECG) for LED luminaries
C
BOOT
I
OUT
DIM
SD
BOOT
L
SW
D
C
OUT
V
OUT
I
LED
ILD8150
VIN
CS
VCC
V
VIN
GND
C
VCC
R
CS
Figure 1
Product validation
•
DC/DC buck constant current
Qualified for industrial applications according to the relevant tests of JEDEC47/20/22.
Package
PG-DSO-8
PG-DSO-8 with exposed pad
Product type
ILD8150
ILD8150E
Datasheet
www.infineon.com
Please read the Important Notice and Warnings at the end of this document
V1.4
2021-01-19
LED driver IC for high power LEDs with hybrid dimming down to 0.5%
Description
ILD8150/ILD8150E
Description
The ILD8150 is a 80 V DC/DC converter IC for LED applications to drive high-power LEDs. For applications
operating close to SELV limits it provides a high safety voltage margin. The buck LED driver IC is tailored for
LEDs in general lighting applications with average currents up to 1.5 A using a high-side integrated switch. A
complete set of features and protections provide a well fit for professional LED lighting solutions.
Performance and innovation
The hysteretic current control provides an extremely fast regulation and stable LED current combined with good
EMI performance. The efficiency of the LED driver is remarkable high due to the low
R
ON
of the internal switch.
Hybrid dimming is an Infineon unique one-pin dimming method that combines analog dimming and PWM
dimming of the LEDs current in one hybrid dimming curve.
A PWM input signal between 250 Hz and 20 kHz controls dimming of the LEDs current in analog mode from
100 percent to 12.5 percent and 12.5 percent to 0.5 percent in hybrid mode with flicker-free modulation
frequency of 3.4 kHz. The digital PWM dimming detection with high resolution makes it the perfect match for
microcontroller and high quality dimming applications.
The IC supply is directly driven from the primary stage and the low-power shut down contributes to a very high
stand-by system efficiency.
High output current accuracy from device to device under all loads and input voltages conditions makes it
perfect for tunable white and flat panel designs where current must be identical string to string.
Protection
A wide range of operating supply voltage from 8 V to 80 V DC enables a wide use in many applications and
provides a good margin when bus voltage exceeds shortly the SELV limits.
The soft-start function protects the primary stage from abrupt current request.
The over temperature protection is triggered when the junction temperature exceeds the temperature
threshold turning off the output stage. The output stage turns on again when the junction temperature falls
below the temperature threshold.
Under voltage lock-out protects the bootstrap voltage and the hysteretic design ensures cycle-by-cycle current
limitation.
Datasheet
2
V1.4
2021-01-19
LED driver IC for high power LEDs with hybrid dimming down to 0.5%
Table of contents
ILD8150/ILD8150E
Table of contents
Features
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Potential applications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Table of contents
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1
2
3
3.1
3.1.1
3.1.2
3.1.3
3.1.4
3.2
3.2.1
3.2.2
4
4.1
4.2
4.3
4.4
5
Functional block diagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin configuration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Functional description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Buck controller features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Output current regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Digital soft-start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Low power mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Protection features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Over-temperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Under-voltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Thermal and electrical characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Package characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Package dimensions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Revision history
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Disclaimer
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Datasheet
3
V1.4
2021-01-19
LED driver IC for high power LEDs with hybrid dimming down to 0.5%
Functional block diagram
ILD8150/ILD8150E
1
Functional block diagram
VCC
VIN
VREG
VCC
OVER
TEMPERATURE
3.3V
BOOT
LOW POWER
SD
3.3V
GD
UVLO
SW
DIM
DIMMING
LOGIC
DAC
UCL
LCL
-
+
-
+
UCL
LCL
CS
GND
Figure 2
Block diagram
Datasheet
4
V1.4
2021-01-19
LED driver IC for high power LEDs with hybrid dimming down to 0.5%
Pin configuration
ILD8150/ILD8150E
2
Pin configuration
SW
BOOT
DIM
GND
1
2
3
4
8
7
6
5
VIN
VCC
SD
CS
SW
BOOT
DIM
GND
1
2
3
4
8
7
VIN
VCC
SD
CS
EP
6
5
PG-DSO-8
PG-DSO-8
with exposed pad
Figure 3
Pin-out
Both PG-DSO-8 and PG-DSO-8 with exposed pad have the same pin-out. The exposed pad is internally not
connected.
Table 1
Name
SW
BOOT
DIM
GND
CS
SD (neg.)
VCC
VIN
EP
2)
No.
1
2
3
4
5
6
7
8
9
Pin functions
Function
Internal switch output.
Internal switch driver bootstrap, connect to bootstrap capacitor.
Input for PWM dimming (internally pulled-up).
Ground.
Current sense feedback.
Shutdown (internally pulled-up).
1)
Output of the internal regulator, connect to bypass capacitor.
Input voltage.
Exposed pad, connect to GND (internally not connected).
1
2
To use the shutdown functionality 3.3 V must be provided externally at DIM pin.
PG-DSO-8 with exposed pad only.
5
V1.4
2021-01-19
Datasheet
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