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LP87564-Q1 Datasheet(PDF) 4 Page - Texas Instruments |
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LP87564-Q1 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 99 page  4 LP87561-Q1 LP87562-Q1, LP87563-Q1, LP87564-Q1, LP87565-Q1 SNVSB22 – MARCH 2018 www.ti.com Product Folder Links: LP87561-Q1 LP87562-Q1 LP87563-Q1 LP87564-Q1 LP87565-Q1 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated (1) A: Analog Pin, D: Digital Pin, G: Ground Pin, P: Power Pin, I: Input Pin, O: Output Pin Pin Functions PIN TYPE(1) DESCRIPTION NO. NAME 1 FB_B2 A Output voltage feedback (positive) for the BUCK2 converter. 2 EN3 D/I/O Programmable enable signal for the buck regulators (can be also configured to select between two buck output-voltage levels). This pin functions alternatively as GPIO3. 3 CLKIN D/I External clock input. Connect this pin to ground if the external clock is not used. 4, 17, Thermal Pad AGND G Ground 5 SCL D/I Serial interface clock input for I2C access. Connect this pin to a pullup resistor. 6 SDA D/I/O Serial interface data input and output for I2C access. Connect this pin to a pullup resistor. 7 EN1 D/I/O Programmable enable signal for the buck regulators (can be also configured to select between two buck output voltage levels). This pin functions alternatively as GPIO1. 8 FB_B0 A Output voltage feedback (positive) for the BUCK0 converter. 9 VIN_B0 P Input for the BUCK0 converter. The separate power pins, VIN_Bx, are not connected together internally. The VIN_Bx pins must be connected together in the application and be locally bypassed. 10 SW_B0 A BUCK0 switch node 11 PGND_B01 G Power ground for the BUCK0 and BUCK1 converters 12 SW_B1 A BUCK1 switch node 13 VIN_B1 P Input for the BUCK1 converter. The separate power pins, VIN_Bx, are not connected together internally. The VIN_Bx pins must be connected together in the application and be locally bypassed. 14 FB_B1 A Output voltage feedback (positive) for the BUCK1 converter. This pin functions alternatively as the output ground feedback (negative) for the BUCK0 converter. 15 EN2 D/I/O Programmable enable signal for the buck regulators (can be also configured to select between two buck output voltage levels). This pin functions alternatively as GPIO2. 16 PGOOD D/O Power-good indication signal 18 VANA P Supply voltage for the analog and digital blocks. This pin must be connected to the same node as VIN_Bx. 19 nINT D/O Open-drain interrupt output. This pin is active low. 20 NRST D/I Reset signal for the device 21 FB_B3 A Output voltage feedback (positive) for the BUCK3 converter. This pin functions alternatively as the output ground feedback (negative) for the BUCK2 converter. 22 VIN_B3 P Input for the BUCK3 converter. The separate power pins, VIN_Bx, are not connected together internally. The VIN_Bx pins must be connected together in the application and be locally bypassed. 23 SW_B3 A BUCK3 switch node 24 PGND_B23 G Power ground for the BUCK2 and BUCK3 converters 25 SW_B2 A BUCK2 switch node 26 VIN_B2 P Input for the BUCK2 converter. The separate power pins, VIN_Bx, are not connected together internally. The VIN_Bx pins must be connected together in the application and be locally bypassed. |
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