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TPS7A3301RGWR Datasheet(PDF) 4 Page - Texas Instruments |
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TPS7A3301RGWR Datasheet(HTML) 4 Page - Texas Instruments |
4 / 22 page Where: V OUT R + R 1 2 ³ 5 A, and m V OUT V REF - 1 R = R 1 2 TPS7A3301 OUT FB GND C 10 F IN m C 1 F NR/SS m R 1 1.24 M W R 2 105 k W C 10 nF FF C 47 F OUT m IN EN NR/SS V IN V OUT = 15 V - OUT NC FB NC NC IN NR/SS EN NC NC GND 1 2 3 4 5 15 14 13 12 11 GND OUT NR/SS 1 2 3 4 5 6 IN NC EN FB 7 TPS7A33 SBVS169B – DECEMBER 2011 – REVISED MARCH 2012 www.ti.com PARAMETRIC MEASUREMENT INFORMATION TYPICAL APPLICATION CIRCUIT Maximize PSRR Performance and Minimize RMS Noise PIN CONFIGURATIONS KC PACKAGE RGW PACKAGE TO-220-7 5-mm × 5-mm QFN-20 (TOP VIEW) (TOP VIEW) PIN DESCRIPTIONS NO. NAME KC RGW(1) DESCRIPTION This pin turns the regulator on or off. If VEN ≥ V+EN_HI or VEN ≤ V–EN_HI, the regulator is enabled. EN 1 13 If V+EN_LO ≥ VEN ≥ V–EN_LO, the regulator is disabled. The EN pin can be connected to IN, if not used. |VEN| ≤ |VIN|. This pin is the input to the control-loop error amplifier. It is used to set the output voltage of the device. It is FB 7 3 recommended to connect a 0.01-µF capacitor from FB to OUT (as close to the device as possible) to maximize ac performance. GND 4 7 Ground Input supply. A capacitor greater than or equal to 10 nF must be tied from this pin to ground to assure stability. It is recommended to connect a 10-µF capacitor from IN to GND (as close to the device as possible) to reduce circuit IN 3 15, 16 sensitivity to printed-circuit-board (PCB) layout, especially when long input traces or high source impedances are encountered. 2, 4-6, 8-12, NC 5 This pin can be left open or tied to any voltage between GND and IN. 17-19 Noise reduction pin. A capacitor connected from this pin to GND controls the soft-start function and allows RMS noise to NR/SS 2 14 be reduced to very low levels. It is recommended to connect a 1-µF capacitor from NR/SS to GND (as close to the device as possible) to bypass the noise generated by the internal bandgap and maximize ac performance. Regulator output. A capacitor greater than or equal to 10 µF must be tied from this pin to ground to assure stability. It is OUT 6 1, 20 recommended to connect a 47-µF ceramic capacitor from OUT to GND (as close to the device as possible) to maximize ac performance. Tab Tab — TAB is internally connected to GND. An external heatsink can be installed to provide additional thermal performance. (1) RGW is a product-preview device. 4 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated |
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