BCR450E6327XT Infineon Technologies, BCR450E6327XT Datasheet

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BCR450E6327XT

Manufacturer Part Number
BCR450E6327XT
Description
Manufacturer
Infineon Technologies
Datasheet

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
1
Features
Benefits
Typical Applications
2
The BCR450 is a LED driver IC optimized for usage with an external power transistor for driving LED’s above
100mA. For currents up to 85mA the BCR450 can be used in stand alone operation. The output current level can
be adjusted with an external sense resistor.
The IC can be switched on and off by an external signal, which is also suitable to regulate brightness of the LEDs
by PWM dimming.
The precise internal bandgap stabilizes the circuit and provides stable current conditions over temperature range.
Additional features are included to protect the LED’s from overload, short circuit events as well as from over
voltage. The LED’s can be also protected against thermal overload by thermally coupling the LED’s to the
BCR450.
Datasheet
Low voltage drop across sense resistor, 0.15 V typical
High output current precision
Operating voltage fro 8 to 27 V
Over voltage protection
Overtemperature current foldback and Thermal shut down
function
Adjustable Constant LED Current up to 85 mA in stand alone
operation
Precise Internal bandgap enables High output current accuracy
Up to 2.5 A LED current possible by using external transistor
EN Input for PWM LED brightness control and On/Off control
Very Low Standby Current
Minimum number of external components required, no inductors
Very small SC-74 package: 2.9 mm x 2.5 mm x 1.1 mm
High level of colour control due to high output current precision
Small space requirement
No electro- magnetic interference
Active thermal monitoring of chip and LED temperature with
current fold- back to avoid thermal overstress
Low cost device
Scalable output stage optimizing cost and space
General lighting e.g. retrofits
Architectural lighting, Medical and Dental lighting
Transportation like train and aircraft lighting
Strobe lighting
Universal constant current source
Signal and marker lights for orientation or navigation
LED controller for industrial applications, not qualified to AECQ-
100
BCR450 Power LED Driver IC
Description
4
Typical 12V High Power LED Application
6
3
5
4
4
BCR450
BCR450 Power LED Driver IC
2,5
6
1
Rev. 3.0, 2009-10-15
LED Driver IC
Vs
1
BCX68-25
2
350mA
BCR450
3

Related parts for BCR450E6327XT

BCR450E6327XT Summary of contents

Page 1

BCR450 Power LED Driver IC Features • Low voltage drop across sense resistor, 0.15 V typical • High output current precision • Operating voltage fro • Over voltage protection • Overtemperature current foldback and Thermal ...

Page 2

Iout 1 GND 2 Output stage 3 EN Figure 1 Block diagram Pin Definition Table 1 Pin definition and function Pin number Pin Symbol I 1 out 2 GND sense 5 GND Table ...

Page 3

AC Measurement 150 mV Source 4 Source 5 PWM = = 5V= Source 1 Source 2 Figure 2 Electrical test circuit Thermal resistance Table 3 Thermal resistance Parameter Junction - solder point ...

Page 4

Electrical Characteristics 3.1 DC Characteristics < < °C < < 150 °C, all voltages with respect to ground; current directions as given unless otherwise specified All parameters are ...

Page 5

Digital Signals All parameters are tested at 25 °C, unless otherwise specified Table 6 Digital Control Parameter (EN) Parameter PWM signal frequency PWM Duty cycle PWM voltage 3.3 Transient Parameters < < ...

Page 6

Measured Parameters BCR450 IC has been measured in test bench with undefined high thermal resistance This is valid for all diagramed DC- and AC- Parameters 4.1 DC- Parameter 2.4 V out I V ...

Page 7

vers Temperature ( ) sense S sense I_sense_vers Temp; Vs V_sense = 20 mV; V_out = 1 V; V_en = 2.4 V 145.00 140.00 135.00 130.00 125.00 120.00 115.00 110.00 105.00 100.00 -40 - ...

Page 8

out I Temperature vers out mV 2 sense I V vers Temperature ( ...

Page 9

mV 2.4 V out sense I V Temperature vers ( ) s S I_s_vers Vs; Temp V_sense = 20 mV; V_out = 6 V; V_en = 2.4 V 100.00 90.00 80.00 ...

Page 10

mA 2.4 V out out V V Temperature vers ( ) sense 350 mA , Booster Application , see Figure 3 s out T ...

Page 11

Internal Transistor BCR450 BCR450 _Vdrop _Schematic.vsd 4.2 AC- Parameter Response Time & kHz; on off s Pulse Datasheet V vers drop 6 5 Vdrop 4 ...

Page 12

Evaluation Board 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 three external transistors ...

Page 13

Figure 4 Cross section of evaluation board 6 Package Information (0.35) Figure 5 Package outline; SC74 Figure 6 Tape loading Datasheet Via 1.3 mm 0.5 mm Drill Cross section of application board.vsd 2.9 ±0.2 B (2.25) 0.1 MAX ...

Page 14

BCR450, LED Driver IC Revision History: 2009-10-15, Rev. 3.0 Previous Version: 2007-09-26, Rev. 2.1 Page Subjects (major changes since last revision) All Editorial changes Datasheet 3 BCR450 LED Driver IC Rev. 3.0, 2009-10-15 ...

Page 15

... Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies failure of such components can reasonably be expected to cause the failure of that life-support device or system affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body support and/or maintain and sustain and/or protect human life ...

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