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TPS62046 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS62046 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 21 page TPS62040 TPS62042,TPS62043 TPS62044,TPS62046 SLVS463A − JUNE 2003 − REVISED OCTOBER 2003 www.ti.com 4 PIN ASSIGNMENTS 1 2 3 4 5 10 9 8 7 6 EN VIN VIN GND FB PGND PGND SW SW MODE DGQ PACKAGE (TOP VIEW) NOTE: The PowerPAD must be connected to GND. 1 2 3 4 5 10 9 8 7 6 EN VIN VIN GND FB PGND PGND SW SW MODE DRC PACKAGE (TOP VIEW) Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION EN 1 I Enable. Pulling EN to ground forces the device into shutdown mode. Pulling EN to VI enables the device. EN should not be left floating and must be terminated. VIN 2,3 I Supply voltage input GND 4 Analog ground FB 5 I Feedback pin. Connect FB directly to the output if the fixed output voltage version is used. For the adjustable version an external resistor divider is connected to this pin. The internal voltage divider is disabled for the adjustable version. MODE 6 I Pulling the MODE pin high allows the device to be forced into fixed frequency operation. Pulling the MODE pin to low enables the power save mode where the device operates in fixed frequency PWM mode at high load currents and in PFM mode (pulse frequency modulation) at light load currents. SW 7,8 I/O This is the switch pin of the converter and is connected to the drain of the internal power MOSFETs PGND 9,10 Power ground |
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