IZ9923

IZ9921, IZ9922, IZ9923 HIGH-VOLTAGE LED DRIVER WITH BUILT-IN MOSFET SWITCH IZ9921, IZ9922, IZ9923 are high-voltage LED driver control ICs with built-in MOSFET switch and intended for LED lighting control. They allow efficient operation of LED strings from voltage sources ranging up to 400VDC. The IZ9921/22 includes an internal high-voltage switching MOSFET controlled with fixed off-time TOFF of approximately 10µs. The LED string is driven at constant current, thus providing constant light output and enhanced reliability. The output current is internally fixed at 20mA for IZ9921, 50mA for IZ9922 and 30mA for IZ9923. The peak current control scheme provides good regulation of the output current throughout the universal AC line voltage range of 85 to 264VAC or DC input voltage of 20 to 400V. Main features: Operating temperature range -40 … +85 ºС; ON-resistance of the MOSFET switch 210 Ohm; OFF-state breakdown voltage of the MOSFET switch not less 500 V; ESD level 500V Table 1 – Contact pad description Contact pad number Symbol 01 TST Test pad 02 PR3 Test pad 03 PR2 Test pad 04 TR Test pad 05 PR1 Test pad 06 PR4 Test pad 07 UDD Supply voltage pad 08 TU Test pad 09 GND Ground 10 PU1 Test pad 11 PU2 Test pad 12 PU3 Test pad 13 DRAIN MOSFET switch drain pad 14 GND Ground Description Note – 1 Contact pad 01 - 06, 08, 10, 11, 12, 14 (test pads) are used for testing process on manufacturing fab only (have not to be bonded by customer). 2 Contact pad 09...