BCR450E6327XT Infineon Technologies, BCR450E6327XT Datasheet - Page 12

• Manufacturer Part Number: BCR450E6327XT
• Manufacturer: Infineon Technologies

Specifications of BCR450E6327XT

• Operating Supply Voltage (typ): 9/12/15/18/24V
• Operating Temperature (min): -30C
• Operating Temperature (max): 150C
• Operating Temperature Classification: Commercial
• Pin Count: 6
• Mounting: Surface Mount
• Power Dissipation: 500mW
• Operating Supply Voltage (max): 27V
• Lead Free Status / Rohs Status: Compliant

5
The evaluation board is designed to test the BCR450 as a stand alone device for lower LED current applications
and also with additional external “booster“ transistors for high current, high brightness LEDs. Up to three external
transistors BCX68 or BC817SU each could be used on the PCB to minimize thermal problems.
3 LEDs in series for high current mode or 3 LEDs for low current applications can be chosen by setting resistors
(for further application hints see AN105). The particular sense voltage can be derived by jumpers which are
provided in the layout for each test case. Additional test circuit is included to measure AC characteristics, and the
ENABLE input is designed to connect a PWM signal. The PCB is manufactured in double sided FR4 with substrate
thickness of 1.0 mm.
Figure 3
Datasheet
P1
PWM
AC- Measure
Evaluation Board
Evaluation board schematic
Vbat
BCR450 LED Controller
EN, Pin 3
Vsense, Pin 4
= Vref
Vs, Pin 6
+
-
GND, Pin 2 & 5
15
Iout, Pin 1
Jumper-L
Rsenselow
LEDs
Jumper-H
P2
BCR450_Application circuit.vsd
Rev. 3.0, 2009-10-15
Evaluation Board
BCX68-25
BC817SU
Rsensehigh
LED Driver IC
NPN
Power
Transistors
LEDs
or
BCR450