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LP8866S-Q1 Datasheet(PDF) 6 Page - Texas Instruments |
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LP8866S-Q1 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 82 page  Table 5-2. QFN Pin Functions PIN TYPE DESCRIPTION NO. NAME 1 OUT6 Analog LED current sink output. If unused tie to ground.. 2 OUT5 Analog LED current sink output. If unused tie to ground.. 3 OUT4 Analog LED current sink output. If unused tie to ground. 4 LED_GND GND LED ground connection. 5 OUT3 Analog LED current sink output. If unused tie to ground. 6 OUT2 Analog LED current sink output. If unused tie to ground. 7 OUT1 Analog LED current sink output. If unused tie to ground. 8 INT Analog Device fault interrupt output, open drain. A 10-kΩ pullup resistor is recommended. 9 SDA Analog SDA for I2C interface. A 10-kΩ pullup resistor is recommended. 10 SCL Analog SCL for I2C interface. A 10-kΩ pullup resistor is recommended. 11 BST_SYNC Analog Input for synchronizing boost. When synchronization is not used, connect this pin to ground to disable spread spectrum or to VDD to enable spread spectrum. 12 PWM Analog PWM input for brightness control. Tie to GND if unused. 13 SGND GND Signal ground. 14 LED_SET Analog LED string configuration through external resistor. Do not leave floating. 15 PWM_FSET Analog LED dimming frequency setup through external resistor. Do not leave floating. 16 BST_FSET Analog Boost switching frequency setup through external resistor. Do not leave floating. 17 MODE Analog Dimming mode setup through external resistor. Do not leave floating. 18 UVLO Analog Input voltage sense for programming input UVLO threshold through external resistor to VIN. 19 VSENSE_P Analog Pin for input voltage detection for OVP protection and positive input for input current sense. 20 VSENSE_N Analog Negative input for input current sense. If input current sense is not used, please tie to VSENSE_P pin. 21 SD Analog Power line FET control. Open Drain output. If unused, leave this pin floating. 22 VDD Power Power supply input for internal analog and digital circuit. Connect a 10-uF capacitor between the VDD pin to GND 23 EN Analog Enable input. 24 C1N Analog Negative input for charge pump flying capacitor. If feature not used leave this pin floating. 25 C1P Analog Positive input for charge pump flying capacitor. If feature not used leave this pin floating. 26 CPUMP Power Charge pump output pin. Connect to VDD if charge pump is not used. A 4.7-µF decoupling capacitor is recommended on CPUMP pin. 27 GD Analog Gate driver output for external N-FET. 28 PGND GND Power ground. 29 ISNS Analog Boost current sense pin. 30 ISNSGND GND Current sense resistor GND. 31 ISET Analog LED full-scale current setup through external resistor. 32 FB Analog Boost feedback input. DAP LED_GND GND LED ground connection. LP8866S-Q1 SNVSBD1A – AUGUST 2020 – REVISED FEBRUARY 2021 www.ti.com 6 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: LP8866S-Q1 |
Similar Part No. - LP8866S-Q1_V01 |
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Similar Description - LP8866S-Q1_V01 |
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