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IZ3361 Dataheets PDF



Part Number IZ3361
Manufacturers Integral
Logo Integral
Description LED Driver
Datasheet IZ3361 DatasheetIZ3361 Datasheet (PDF)

IL3361D/ IL3361DH/ IZ3361 LED Driver with Average-Mode Constant Current Control (functional analog HV9961 Supertex Inc.) The IL3361 is an average current, mode control LED driver IC operating in a constant off-time mode. This control IC does not produce a peak-to-average error, and therefore greatly improves accuracy, line and load regulation of the LED current without any need for loop compensation or high-side current sensing. The output LED current accuracy is ±3%. The IL3361 can be powered f.

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IL3361D/ IL3361DH/ IZ3361 LED Driver with Average-Mode Constant Current Control (functional analog HV9961 Supertex Inc.) The IL3361 is an average current, mode control LED driver IC operating in a constant off-time mode. This control IC does not produce a peak-to-average error, and therefore greatly improves accuracy, line and load regulation of the LED current without any need for loop compensation or high-side current sensing. The output LED current accuracy is ±3%. The IL3361 can be powered from an 8.0 - 450 VDC supply. The output current can be programmed by an internal 272 mV reference, or controlled externally through a 0 - 1.5 V dimming input. FEATURES: • Fast average current control • Programmable constant off-time switching • Linear dimming input • PWM dimming input • Output short circuit protection • Ambient operating temperature -40oC to +125oC • Pin-compatible with the IL9910 IC APPLICATIONS: • DC/DC or AC/DC LED driver applications • LED backlight driver for LCD displays • General purpose constant current source • LED signage and displays • Architectural and decorative LED lighting • LED street lighting Block diagram: General view of ICs: IL3361D (plastic SO-8 case) IL3361DH (plastic SO-16 case) IZ3361 (dice) Typical application circuit: 1 Ver.00/20.03.2012 IL3361e_tsp 338944 IL3361D/ IL3361DH/ IZ3361 IL3361D pin numbers displayed without brackets, brackets contain pin numbers for IL3361DH. Pin and Pad Description: Pad Pin number Symbol number IZ3361 1 2 8-Lead 16-Lead SOIC SOIC1* 11 -- VIN TEST 3 24 CS 4, 53* 6 3 4 5 8 GND GATE 7, 94* 6 12 8 59 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 7 13 Vdd PWM D P6 P0 P1 P2 P3 P4 P5 LD 18 8 14 19 - 20 - 21 - - RT Prm2 Prm0 Prm1 Description Input of an 8.0 - 450V linear regulator Test pad2* Current sense pin used to sense the FET current by means of an external sense resistor Ground return for all internal circuitry GATE driver output for an external N-channel power MOSFET Power supply pin for all internal circuits PWM dimming input of the IC Test pad2* Test pad2* Test pad2* Test pad2* Test pad2* Test pad2* Test pad2* Linear dimming input and it sets the current sense threshold as long as the voltage at this pin is less than 1.5V. If voltage at LD falls below 150mV, the GATE output is disabled. The GATE signal recovers at 200mV at LD A resistor connected between this pin and GND programs the GATE off-time Test pad2* Test pad2* Test pad2* Ver.00/20.03.2012 2 IL3361e_tsp 338944 IL3361D/ IL3361DH/ IZ3361 Pad Pin number Symbol Description number IZ3361 22 8-Lead 16-Lead SOIC SOIC1* -- REF Test pad2* Note: 1) Pins 2, 3, 6, 7, 10, 11, 15, 16 of IL3361DH are not used 2) Contact pad 2, 10-16, 19-22 (test pads) are used for testing process on manufacturing fab only (have not to be bonded by customer) 3) Contact pad 4, 5 (Ground) are electrically connected 4) Contact pad 7, 9 (Power supply) are electrically connected Electrical Characteristics: Symbol Description Min Typ Max Units Conditions Input V|NDC Input DC supply voltage range1* I|NSD Shut-down mode supply current * Internal Regulator VDD Internally regulated voltage 8.0 - 7.05 ΔVDD, line Line regulation of VDD 0 ΔVDD, load Load regulation of VDD 0 UVLO ΔUVLO VDD under voltage lockout threshold* VDD under voltage lockout hysteresis 6.0 - PWM Dimming VEN(Io) VEN(hi) REN PWM_D input low voltage* PWM_D input high voltage* Internal pull-down resistance at PWM D - PWM dimming frequency 2.0 50 - Average Current Sense Logic VCS Current sense reference voltage * ΔV(LD) LD-to-CS voltage ratio* VLD(OFF) LD input voltage, shutdown AVLD (OFF) LD input voltage, enable TBLANK Current sense blanking interval* TON(min) Minimum on-time DMAX Maximum steady-state duty cycle 264 0.17 150 75 - - - - 500 100 - 150 200 - 450 V 1.0 mA 7.75 V 1.0 V 100 mV 6.95 V - mV 0.8 V -V 150 kΩ 500 Hz 280 0.19 280 1000 - mV - mV mV ns ns % DC input voltage Pin PWM_D to GND VIN = 8.0V, IDD(ext) = 0, 500pF at GATE; RT = 226kΩ, PWM_D = VDD VIN = 8.0 - 450 V, IDD(ext)= 0, 500pF at GATE; RT = 226kΩ, PWM_D = VDD IDD(ext) = 0 - 1.0 mA, 500pF at GATE; RT = 226kΩ, PWM_D = VDD VIN rising VIN falling VIN = 8.0 - 450V VIN = 8.0 - 450V VPWMD = 5.0V - VLD falling VLD rising CS = VCS+30mV Reduction in output LED current may occur beyond this duty cycle Ver.00/20.03.2012 3 IL3361e_tsp 338944 IL3361D/ IL3361DH/ IZ3361 Symbol Description Min Typ Max Units Conditions Short Circuit Protection VCS TDELAY THICCUP Hiccup threshold voltage Current limit delay CS-to-GATE Short circuit hiccup time 410 - 470 mV - - - 150 ns CS = VCS+30mV - 395 - μs - TON(min) Minimum on-time (short circuit) - - 430 ns CS = VDD TOFF TIMER TOFF Off time 8 - 12 μs RT = 226 kΩ 32 - 48 RT = 1.00 MΩ GATE Driver ISOURCE ISINK tRISE tFALL Notes GATE sourcing current GATE sinking current GATE output rise time GATE output fall time 0.165 0.165 - - - A VGATE = 0V, VDD = 7.5V - A VGATE = Vdd, VDD = 7.5V 5.


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