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LP87322ERHDRQ1 Datasheet(PDF) 4 Page - Texas Instruments |
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LP87322ERHDRQ1 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 73 page  8 9 10 11 12 13 14 2 3 4 5 6 1 7 20 19 18 17 16 21 15 28 27 26 25 24 23 22 VIN_LDO1 nINT CLKIN VIN_B1 VIN_B1 SW_B1 SW_B1 SW_B0 SW_B0 VIN_B0 VIN_B0 GPO PGOOD VIN_LDO0 THERMAL PAD 4 LP87322B-Q1, LP87322D-Q1, LP87322E-Q1, LP87322F-Q1 SNVSAC5 – SEPTEMBER 2017 www.ti.com Product Folder Links: LP87322B-Q1 LP87322D-Q1 LP87322E-Q1 LP87322F-Q1 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) A: Analog Pin, D: Digital Pin, G: Ground Pin, P: Power Pin, I: Input Pin, O: Output Pin 6 Pin Configuration and Functions RHD Package 28-Pin VQFN With Thermal Pad Top View Pin Functions PIN TYPE(1) DESCRIPTION NUMBER NAME 1 VOUT_LDO0 P/O LDO0 output. If LDO0 is not used, leave the pin floating. 2 FB_B0 A Output voltage feedback (positive) for Buck 0 3 FB_B1 A Output voltage feedback (positive) for Buck 1 4 AGND G Ground 5 VANA P/I Supply voltage for analog and digital blocks. Must be connected to same node with VIN_Bx. 6 EN D/I Programmable enable signal for regulators and GPOs. If the pin is not used, leave the pin floating. 7 VOUT_LDO1 P/O LDO1 output. If LDO1 is not used, leave the pin floating. 8 VIN_LDO1 P/I Power input for LDO1. If LDO1 is not used, connect the pin to VANA. 9 nINT D/O Open-drain interrupt output. Active LOW. If the pin is not used, connect the pin to ground. 10 CLKIN D/I/O External clock input. Alternative function is general-purpose digital output (GPO2). If the pin is not used, leave the pin floating. 11, 12 VIN_B1 P/I Input for Buck 1. The separate power pins VIN_Bx are not connected together internally - VIN_Bx pins must be connected together in the application and be locally bypassed. 13, 14 SW_B1 P/O Buck 1 switch node. If the Buck 1 is not used, leave the pin floating. 15, 16 PGND_B1 P/G Power ground for Buck 1 17 SCL D/I Serial interface clock input for I2C access. Connect a pullup resistor. If the I2C interface is not used, connect the pin to Ground. 18 SDA D/I/O Serial interface data input and output for I2C access. Connect a pullup resistor. If the I2C interface is not used, connect the pin to Ground. 19 SGND G Ground 20, 21 PGND_B0 P/G Power ground for Buck 0 |
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