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TPS79425 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS79425 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 15 page www.ti.com _ + Thermal Shutdown Bandgap Reference 1.225 V VIN Current Sense R2 IN GND EN OUT SHUTDOWN Vref UVLO ILIM External to the Device FB R1 UVLO 250 k Ω NR(1) (1) Not Available on DCQ (SOT223) options. Quickstart _ + Thermal Shutdown VIN Current Sense R1 R2 IN GND EN OUT SHUTDOWN Vref UVLO ILIM Bandgap Reference 1.225 V UVLO 250 k Ω NR Quickstart R2 = 40k TPS79401, TPS79418 TPS79425, TPS79428 TPS79430, TPS79433 SLVS349D – NOVEMBER 2001 – REVISED OCTOBER 2004 FUNCTIONAL BLOCK DIAGRAM—ADJUSTABLE VERSION FUNCTIONAL BLOCK DIAGRAM—FIXED VERSION Terminal Functions TERMINAL DESCRIPTION DGN DCQ NAME (MSOP) (SOT223) NR 4 5 Connecting an external capacitor to this pin bypasses noise generated by the internal bandgap. This improves power-supply rejection and reduces output noise. EN 6 1 The EN terminal is an input which enables or shuts down the device. When EN goes to a logic high, the device will be enabled. When the device goes to a logic low, the device is in shutdown mode. FB 3 5 This terminal is the feedback input voltage for the adjustable device. GND 5, PAD 3 Regulator ground. IN 8 2 Unregulated input to the device. NC 2, 7 No internal connection. OUT 1 4 Output of the regulator. 5 |
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