DatasheetsPDF.com

IL7150A Dataheets PDF



Part Number IL7150A
Manufacturers IK Semiconductor
Logo IK Semiconductor
Description Light Emitting Diode (LED) Driver
Datasheet IL7150A DatasheetIL7150A Datasheet (PDF)

Light Emitting Diode (LED) Driver Features  Supply voltage from 4.0 to 40 V  Output driving current up to 0.8 A (IL7150A), 1.5 A (IL7150)  Current consumption 4 mA  ESD protection up to 2kV  Temperature range from - 40 to +85 C  Only 5 external components required TECHNICAL DATA IL7150, IL7150A TO-263-5L IL7150D2T IL7150AD2T Applications  Automotive  DC/DC LED Driver  Lighting Equipments  Light Indicators Device IL7150D2T IL7150AD2T ORDERING INFORMATION Operating Temperature Rang.

  IL7150A   IL7150A



Document
Light Emitting Diode (LED) Driver Features  Supply voltage from 4.0 to 40 V  Output driving current up to 0.8 A (IL7150A), 1.5 A (IL7150)  Current consumption 4 mA  ESD protection up to 2kV  Temperature range from - 40 to +85 C  Only 5 external components required TECHNICAL DATA IL7150, IL7150A TO-263-5L IL7150D2T IL7150AD2T Applications  Automotive  DC/DC LED Driver  Lighting Equipments  Light Indicators Device IL7150D2T IL7150AD2T ORDERING INFORMATION Operating Temperature Range Package TA = -40 to 125 C TO-263 TO-263 Packing Tape & Reel Tape & Reel Description IL7150, IL7150A (functional equivalent AMC7150 of ADDtek) - LED (Light Emitting Diode) driver with peak output current 0.8A (IL7150A) & 1.5A (IL7150). Microcircuit designed for driving of power LEDs in the wide range of supply voltages and load currents with peak output currents 0.8 & 1.5A. Main application areas are automotive, DC/DC LED driver, lighting equipments and light indicators. 1 2012, June, Rev. 00 IL7150 Table 1. Contact Pad Description Contact pad Number Pin Number Symbol 01 01 VCC 02, 03, 04, 05 02 CS 09, 15 03 GND 06, 07 04 OUT 08 05 OSC Function Supply voltage input Current sensor input Ground Driver output Oscillator output Note: Contact pads 10 – 14 are purposed only for testing during IC manufacturing and are not used by customer Vcc CS OUT +- OCS Control unit Oscilator Driver GND Fig. 1 – Block Diagram 2 2012, June, Rev. 00 IL7150 Table 3. Recommended Operation Conditions Parameter Supply voltage Junction temperature Symbol VCC TJ Target Min Max 4.0 40  125 Unit V oC Table 4. Maximum Ratings Parameter Supply voltage Output voltage Junction temperature Storage temperature Symbol VCC VO TJ TSTG Target Min Max -0.3 40 -0.3 40  150 -60 150 Unit V V oC oC * Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Table 5. Electrical Characteristics Symbol Parameter Testing mode ICC Supply current 4.0 V  VCC  40 V Output saturation voltage VCC = 5.0 V IZ7150 VDP IO = 1.0 A IO = 1.5 A IZ7150A IO= 0.5 A IO= 0.8 A IOL Output leakage current VCC = 40 V VCS DCMAX ICH Current sensor voltage Max duty cycle Capacitor charging current VCC = 5.0 V VCC = 5.0 V VCC = 5.0 V Value Min Max - 4.0 4.4 1.3 1.4 3.0 - 3.0 1.3 1.4 3.0 3.0 - 300 330 300 360 270 396 50 99 20 50 Ambient tempera ture, °C 25  10 -40; 85 25  10; -40; 85 Unit mA V A mV % A 3 2012, June, Rev. 00 + G1 - R1 VCC CS C1 OCS C2 GND IL7150 D1 OUT VD1 L1 VD2 VD3 C1 – capacitor 47 F ± 10%; C2 – capacitor 680 pF ± 10%; D1 – microcircuit ; G1 – supply voltage source from 4.0 to 40 V; L1 – inductance coil 220 H ± 10%; R1 – resistor 330 m ± 1%; VD1 – Zener diode with stabilization voltage 40 V (1N5819 or equivalent); VD2, VD3 - LEDs Fig. 2. Application Diagram Functionality Starting current is regulated in the range from few milliamps up to 1.5 A. The regulation is performed by means of PWM (pulse-width modulation).Load is repetitively connected to the supply voltage via output switch. Changing of pulses porosity, adjusts average output voltage that allows regulating of output current. Inductive energy storage is applied in the circuit because of output voltage is pulse Input decoupling capacitor Input decoupling capacitor C1 regulates the input voltage and rejects switching interference. Limiting diode Zener diode with fast recovering VD1 is recommended as limiting diode. High reverse recovery current will cause on R1 voltage drop more than 330 mV, therefore switch that has to be on will turned off. 4 2012, June, Rev. 00 IL7150 LED driving current Resistor R1 determine max output peak current to the LED. Output peak current IO, flowing thought the LED, can be calculated by formula: IO  330mV R1 . Average LED current is determined by amplitude of oscillating (pulsating) current, that depends on inductivity of coil L1. For example , average current of LED is 550 mA (pulsating) current is 100 mA. Then: R1 330mV  0,55 . 550mA  0,5 100mA In order to driving current not exceed recommended max rating 1.5 A for IL7150, (0.8A for IL7150A), R1 value has to be more than 200 m. Inductor The Inductor L1 stores energy during switch turn-on period and discharge driving current to LEDs via flywheel diode while switch turn-off. In order to reduce the current ripple on LEDs, the L value should high enough to keep the system working at continuousconduction mode that inductor current won’t fall to zero. Since in steady-state operation the waveform must repeat from one time period to the next, the integral of the inductor voltage VL over one time period m.


IL7150 IL7150A IZ1937


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)