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IZ9923 Datasheet PDF

Integral IZ9923

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.
Part No. IZ9923
Datasheet IZ9923 Download
Manufacturer
Integral
Description HIGH-VOLTAGE LED DRIVER
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IZ9923 datasheet page 1 preview

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, 14 (Ground) are electrically connected Ver.00/19.01.2009 1 IZ9921-TSe+ 431104 Functional Block Diagram GND VREF2 Reference voltage source VREF1 + RC-oscillator (TOFF = 10 µS) SQ RQ Delay line IZ9921, IZ9922, IZ9923 VDD DRAIN HVNMOS Regulator D1 D4 R1 D2 D3 - NMOS +& R2 R Fig 1 – Block diagram Ver.00/19.01.2009 2 IZ9921-TSe+ 431104 IZ9921, IZ9922, IZ9923 Table 1 – Recommended operation conditions Symbol Parameter Min Max Unit VDRAIN Input voltage Table 2 – Absolute maximum rating 20 400 V Symbol Parameter Min Max Unit VDRAIN VDD Input voltage Low-voltage part supply voltage -0,3 420 V -0,3 10 V Table 3 – Electric parameters Symbol Parameter Test condition Ambient tempera Min Max ture, Unit oC VDDR Regulator output voltage VIN = (20- 400)V 5,5 9,0 25 ± 10 IDD Low-voltage (control) VDD = 9,5 V part of IC VDRA...
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