IW7038-00-QFN4

iW7038 16-Channel Internal Current Sink LED Backlighting Driver for HDR LCD TV/Monitor/Notebook Displays General Description The iW7038 is a 16-channel, internal current sink, high precision, LED backlighting driver for high dynamic range (HDR) LCD TVs, monitors and notebook displays. It combines adaptive DC/DC or AC/DC feedback control together with Dialog’s patented BroadLED™ digital adaptive switch mode technology to enable the best system efficiency and thermal performance. The iW7038 also offers Dialog’s AnyMode™ comprehensive dimming control, which includes head/tail/center mode PWM alignments to reduce motion blur. Additionally, it supports 13-bit PWM dimming and 11-bit analog dimming to improve contrast ratio in HDR applications. Full protections are included, including built-in LED open/short detection and protection during both start-up and normal operation. Key Features ■ ■ ■ ■ ■ Adaptive external DC/DC or AC/DC feedback 16 channel LED driver control to optimize system power efficiency Internal current sink MOSFETs ■ PWM-generator clock □ HSYNC (up to 22MHz) □ PLL (20MHz) □ Internal OSC (10MHz) ■ 16MHz Max SPI with Daisy chain ■ Optional Key registers write protection with External current sense resisters Single power supply, 12V (9V to 16V range) 50V max. output voltage ■ 200mA x 100% duty x 16ch output current capability, support 2 channel grouping ■ 13-bit max PWM dimming □ range from 0% to 99.9% □ 1µs min. PWM output pulse □ Programmable output slew rate for EMI password, and optional data packet CRC/checksum for noisy SPI interface Programmable LED open/short detection threshold and protection control (0.35µs/0.70µs/1µs) ■ High temperature shutdown and auto recovery ■ Fault interrupt output (open drain, need ■ Enhanced pure digital BroadLED™ mode ■ 11-bit global or 9 bit independent analog external pull up) dimming ■ HBM +/- 2kV JESD22-A114 -20 at all pins ■ -20 to +85°C operating ambient temperature ■ LED current and PWM duty update both synchronized to VSYNC ■ 46Hz to 32kHz VSYNC input, 46Hz to 32KHz PWM output range ■ 145°C max. operating junction temperature ■ Package: 7mm x 7mm QFN48 with EP, 0.5mm pin pitch Applications ■ HDR LCD TV ■ HDR LCD Monitor Product Summary CFR0011-120-00 Rev 4 ■ HDR NB display ■ Automobile Display 1.0 14-May-2018 1 of 7 © 2018 Dialog Semiconductor iW7038 16-Channel Internal Current Sink LED Backlighting Driver for HDR LCD TV/Monitor/Notebook Displays System Diagram DC/DC POWER VIN VOUT VIN FB 12V VIN FB LED1 VDD5 S1 LED2 EN S2 LED3 CSB S3 SCK LED4 MOSI iW7038 S4 MISO VSYNC LED13 CLKIN/CPLL S13 3.3V LED14 FAULTB S14 LED15 S15 LED16 S16 AVSS DVSS EXPGND Figure 1.1: System Diagram Product Summary CFR0011-120-00 Rev 4 1.0 14-May-2018 2 of 7 © 2018 Dialog Semiconductor iW7038 16-Channel Internal Current Sink LED Backlighting Driver for HDR LCD TV/Monitor/Notebook Displays Pinout Figure 1.2: Connection Diagram Table 1: Pin Description Pin # Pin Name Type (Table 2) Description 1 VIN AI Power supply. Connect 4.7µF capacitor to AVSS. 2 AVSS GND GND. 3 VDD5 AIO 5V LDO compensation Pin. Need a ≥ 4.7µF ceramic cap for decoupling. Recommended ESR range of 50mΩ to 350mΩ. 4 FB AIO Analog DAC output interface with external AC/DC or DC/DC converter for LED strings. 5 EN DI Chip enable. 6 CLKIN/CPLL DI/AI PLL compensation input/External clock in. 7 VSYNC DI VSYNC clock input in SPI dimming mode 8 FAULTB DO Fault status (Active Low) - Open drain. 9 CSB DI chip select input for SPI slave . Active LOW. Product Summary CFR0011-120-00 Rev 4 1.0 14-May-2018 3 of 7 © 2018 Dialog Semiconductor iW7038 16-Channel Internal Current Sink LED Backlighting Driver for HDR LCD TV/Monitor/Notebook Displays Pin # Pin Name Type (Table 2) Description 10 MOSI DI Master output, slave input for SPI. 11 SCK DI Serial clock input for SPI. 12 MISO DO Master input, slave output for SPI. 13 DVSS GND GND. 14 LED16 AI LED cathode connection for string 16. 15 S16 AO Source of internal MOSFET, connect to sense resistor. 16 S15 AO Source of internal MOSFET, connect to sense resistor. 17 LED15 AI LED cathode connection for string 15. 18 LED14 AI LED cathode connection for string 14. 19 S14 AO Source of internal MOSFET, connect to sense resistor. 20 S13 AO Source of internal MOSFET, connect to sense resistor. 21 LED13 AI LED cathode connection for string 13. 22 S12 AO Source of internal MOSFET, connect to sense resistor. 23 LED12 AI LED cathode connection for string 12. 24 LED11 AI LED cathode connection for string 11. 25 EXPGND GND Exposed PAD for LED driver, connect to GND. 26 S11 AO Source of internal MOSFET, connect to sense resistor. 27 LED10 AI LED cathode connection for string 10. 28 S10 AO Source of internal MOSFET, connect to sense resistor. 29 S9 AO Source of internal MOSFET, connect to sense resister 30 LED9 AI LED cathode connection for string 9. 31 LED8 AI LED cathode connection for string 8. 32 S8 AO Source of internal MOSFET, connect to sense resistor. 33 S7 AO Source of internal MOSFET, connect to sense resistor. 34 LED7 AI LED cathode connection for string 7. 35 S6 AO Source of internal MOSFET, connect to sense resistor. 36 EXPGND GND Exposed PAD for LED driver, connect to GND. 37 EXPGND GND Exposed PAD for LED driver, connect to GND. 38 LED6 AI LED cathode connection for string 6. 39 LED5 AI LED cathode connection for string 5. 40 S5 AO Source of internal MOSFET, connect to sense resistor. 41 LED4 AI LED cathode connection for string 4. 42 S4 AO Source of internal MOSFET, connect to sense resistor. 43 S3 AO Source of internal MOSFET, connect to sense resistor. 44 LED3 AI LED cathode connection for string 3. 45 LED2 AI LED cathode connection for string 2. 46 S2 AO Source of internal MOSFET, connect to sense resistor. 47 S1 AO Source of internal MOSFET, connect to sense resistor. 48 LED1 AI LED cathode connection for string 1. Product Summary CFR0011-120-00 Rev 4 1.0 14-May-2018 4 of 7 © 2018 Dialog Semiconductor iW7038 16-Channel Internal Current Sink LED Backlighting Driver for HDR LCD TV/Monitor/Notebook Displays Table 2: Pin Type Definition Pin type Description Pin type Description DI Digital Input AI Analog Input DO Digital Output AO Analog Output DIO Digital Input/Output AIO Analog Input/Output 1. Absolute Maximum Ratings Table 3: Absolute Maximum Ratings Symbol Parameter Min Max Unit VIN VIN supply voltage -0.3 20 V VDD5 5V LDO output -0.3 7 V GND pins (AVSS, DVSS, EXPGND) Ground pins -0.3 0.3 V LEDn(LED1~LED16) LEDn pin voltage -0.3 50 V Sn(S1~S16) Internal MOSFET source pins -0.3 7 V Other low voltage pins (CSB, SCK, MISO, MOSI, VSYNC, CLKIN/CPLL, EN, FAULTB, FB) Digital logic I/O pins and voltage feedback pins -0.3 7 V Maximum Operating Junction temperature -40 150 °C Storage temperature -40 150 °C Latch-up current JESD78D -100 +100 mA ESD level JEDEC JESD22-A114 - HBM -2000 +2000 V Note 1 Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, so functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specification are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Product Summary CFR0011-120-00 Rev 4 1.0 14-May-2018 5 of 7 © 2018 Dialog Semiconductor iW7038 16-Channel Internal Current Sink LED Backlighting Driver for HDR LCD TV/Monitor/Notebook Displays 2. Package Information Figure 2.1: 48-Lead 7mm x 7mm QFN Package Outline Drawing 3. Ordering Information Part Number Package Description iW7038-00-QFN4 QFN-7mm x 7mm 48L Tape & Reel1 Note 1 Tape & Reel packing quantity is 4,000/reel. Minimum ordering quantity is 4,000. Product Summary CFR0011-120-00 Rev 4 1.0 14-May-2018 6 of 7 © 2018 Dialog Semiconductor iW7038 16-Channel Internal Current Sink LED Backlighting Driver for HDR LCD TV/Monitor/Notebook Displays Disclaimer Information in this document is believed to be accurate and reliable. However, Dialog Semiconductor does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information. 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Phone: +31 73 640 8822 Taiwan Dialog Semiconductor Taiwan Phone: +886 281 786 222 Product Summary CFR0011-120-00 Rev 4 1.0 14-May-2018 7 of 7 © 2018 Dialog Semiconductor