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RT5028E Datasheet(PDF) 3 Page - Richtek Technology Corporation |
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RT5028E Datasheet(HTML) 3 Page - Richtek Technology Corporation |
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3 / 41 page  3 DS5028E-00 October 2016 www.richtek.com RT5028E © Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Pin No. Pin Name Pin Function 16 SDA Data input for I2C. Open-drain output, connect a 10k pull-up resistor. 17 ENL7 Enable control input for LDO7. Connect a 100k pull-low resistor. 18 ENL8 Enable control input for LDO8. Connect a 100k pull-low resistor. 19 IRQ Open-drain IRQ output node. 20 RESET Reset output. 21, 34, 56, 57 (Exposed Pad) AGND Analog ground. The exposed pad must be soldered to a large PCB and connected to AGND for maximum power dissipation. 22 PWRON Manual power on. Connect a 100k pull-up resistor. 23 REBOOT System power reboot. Connect a 100k pull-low resistor. 24 MTP MTP write protection. Connect a 100k pull-low resistor, logic low is inhibited and logic high is permit to write. 25 MASK_GPIO Select I2C or use EN pin for Bucks and LDOs. Connect a 100k pull-low resistor. As MASK_GPIO is high, ignore all EN pins. As MASK_GPIO is low, EN pins and I2C both can control. EN pins priority is higher than I2C. 26 PWRHOLD Power hold input. Connect a 100k pull-low resistor. 27 SADDR I2C slave address. Connect a 100k pull-low resistor. 28 ENB4 Enable control input for Buck4. Connect a 100k pull-low resistor. 29 VOUTB4S Output voltage regulation node for Buck4. 30 ENB3 Enable control input for Buck3. Connect a 100k pull-low resistor. 31 LXB4 Internal switch node to output inductor connection for Buck4. 32 VINB4 Input power for Buck4. 33 VOUTB3S Output voltage regulation node for Buck3. 35, 36 LXB3 Internal switch node to output inductor connection for Buck3. 37, 38 VINB3 Input power for Buck3. 39 VOUTB2S Output voltage regulation node for Buck2. 40 ENB2 Enable control input for Buck2. Connect a 100k pull-low resistor. 41, 42 LXB2 Internal switch node to output inductor connection for Buck2. 43, 44 VINB2 Input power for Buck2. 45, 46 VINB1 Input power for Buck1. 47, 48 LXB1 Internal switch node to output inductor connection for Buck1. 49 ENB1 Enable control input for Buck1. Connect a 100k pull-low resistor. 50 VOUTB1S Output voltage regulation node for Buck1 51 VDDP Internal bias regulator voltage. External load on this pin is not allowed. 52 VIN Input power for analog base. 53 ENL1 Enable control input for LDO1. Connect a 100k pull-low resistor. 54 ENL2 Enable control input for LDO2. Connect a 100k pull-low resistor. 55 ENL3 Enable control input for LDO3. Connect a 100k pull-low resistor. |
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