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TPS62141RGT Datasheet(PDF) 4 Page - Texas Instruments |
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TPS62141RGT Datasheet(HTML) 4 Page - Texas Instruments |
4 / 34 page 3 Exposed Thermal Pad 9 10 11 12 8 7 6 5 4 2 1 16 15 14 13 PVIN PVIN AVIN SS/TR SW SW SW PG TPS62140 TPS62141, TPS62142, TPS62143 SLVSAJ0 – NOVEMBER 2011 www.ti.com DEVICE INFORMATION RGT PACKAGE (TOP VIEW) Terminal Functions PIN(1) I/O DESCRIPTION NAME NO. SW 1, 2 ,3 O Switch node, which is connected to the internal MOSFET switches. Connect inductor between SW and output capacitor. PG 4 O Output power-good (High = VOUT ready, Low = VOUT below nominal regulation); open-drain (requires pullup resistor; goes high-impedance when device is switched off) FB 5 I Voltage feedback of adjustable version. Connect resistive voltage divider to this pin. Its recommended to connect FB to AGND on fixed output-voltage versions for improved thermal performance. AGND 6 – Analog ground FSW 7 I Switching frequency select (Low ≈ 2.5 MHz, High ≈ 1.25 MHz for typical operation)(2) DEF 8 I Output voltage scaling (Low = nominal, High = nominal + 5%)(2) Soft-start / tracking pin. An external capacitor connected to this pin sets the internal voltage-reference rise SS/TR 9 I time. It can be used for tracking and sequencing. AVIN 10 I Supply voltage for control circuitry. Connect to same source as PVIN. PVIN 11, 12 I Supply voltage for power stage. Connect to same source as AVIN. EN 13 I Enable input (High = enabled, Low = disabled)(2) VOS 14 I Output-voltage sense pin and connection for the control loop circuitry. PGND 15, 16 – Power ground Exposed – Must be connected to AGND. Must be soldered to achieve appropriate power dissipation and mechanical thermal pad reliability. (1) For more information about connecting pins, see the DETAILED DESCRIPTION and APPLICATION INFORMATION sections. (2) An internal pulldown resistor keeps the logic level low, if pin is floating. 4 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): TPS62140 TPS62141 TPS62142 TPS62143 |
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