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LM3370 Datasheet(PDF) 4 Page - Texas Instruments |
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LM3370 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 33 page  B4 B3 PGND1_S C4 C3 C2 D4 D2 SW1 A1 B1 C1 D1 E4 E3 E2 E1 B2 A2 A3 A4 VIN1 SGND FB1 PGND1 SDA SCL VDD SGND NPOR1 NPOR2 PGND2 PGND2_S EN2 EN1 SW2 VIN2 SGND FB2 A B C D E 1 2 3 4 D3 B4 B3 PGND1_S C4 C3 C2 D4 D2 SW1 A1 B1 C1 D1 E4 E3 E2 E1 B2 A2 A3 A4 VIN1 SGND FB1 PGND1 SDA SCL VDD SGND NPOR1 NPOR2 PGND2 PGND2_S EN2 EN1 SW2 VIN2 SGND FB2 A B C D E 1 2 3 4 D3 Top View XY = Date Code TT = Die Run Traceability S = Switcher Family PSB = LM3370TL-3013 Bottom View Top View LM3370 SNVS406M – NOVEMBER 2005 – REVISED AUGUST 2011 www.ti.com Table 1. Pin Descriptions (LLP) (continued) Pin # Name Description 6 PGND1 Buck 1 Power Ground 7 SW1 Buck 1 Switch Pin 8 VIN1 Power supply voltage input to PFET and NFET switches for Buck 1 9 FB1 Analog Feedback Input for Buck 1 10 SDA I2C-Compatible Data, a 2 k Ω pull up resistor is required 11 SCL I2C-Compatible Clock, a 2 k Ω pull up resistor is required Power ON Reset for Buck 1, Open drain output Low when Buck 1 output is 92% of target 12 nPOR1 output. A 100 k Ω pull up resistor is required Power ON Reset for Buck 2, Open drain output Low when Buck 2 output is 92% of target 13 nPOR2 output. A 100 k Ω pull up resistor is required 14 EN1 Buck 1 Enable 15 EN2 Buck 2 Enable 16 FB2 Analog feedback for Buck 2 MICRO SMD CONNECTION DIAGRAM AND PACKAGE MARKING INFORMATION PIN DESCRIPTIONS (MICRO SMD) Pin # Name Description A1 SW1 Buck 1 Switch Pin A2 VIN1 Power supply voltage input to PFET and NFET switches for Buck 1 A3 SGND Signal GND A4 FB1 Analog Feedback Input for Buck 1 B1 PGND1 Buck 1 Power Ground B2 PGND1_S Buck 1 Power Ground Sense B3 SDA I2C-Compatible Data, a 2 k Ω pullup resistor is required B4 SCL I2C-Compatible Clock, a 2 k Ω pullup resistor is required C1 VDD Signal supply voltage input, VDD must be equal or greater of the two inputs ( VIN1 & VIN2) C2 SGND Signal GND Power ON Reset for Buck 1, Open drain output Low when Buck 1 output is 92% of target output. C3 nPOR1 A 100 k Ω pullup resistor is required Power ON Reset for Buck 2, Open drain output Low when Buck 2 output is 92% of target output. C4 nPOR2 A 100 k Ω pullup resistor is required D1 PGND2 Buck 2 Power Ground 4 Submit Documentation Feedback Copyright © 2005–2011, Texas Instruments Incorporated Product Folder Links: LM3370 |
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