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TPS74201 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS74201 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 34 page  IN IN IN PG BIAS OUT OUT OUT NC FB/SNS TPS742xx 6 7 8 9 10 20 19 18 17 16 GND OUT GND BIAS IN FB/ SNS SS 1 2 3 4 5 6 EN 7 TPS74201 www.ti.com SBVS064M – DECEMBER 2005 – REVISED OCTOBER 2015 5 Pin Configuration and Functions RGW PACKAGE KTW PACKAGE 20-Pin VQFN with Exposed Thermal Pad 7-Pin DDPAK/TO-263 Top View SURFACE-MOUNT Pin Functions PIN I/O DESCRIPTION DDPAK/TO- NAME VQFN 263 BIAS 6 10 I Bias input voltage for error amplifier, reference, and internal control circuits. Enable pin. Driving this pin high enables the regulator. Driving this pin low puts EN 7 11 I the regulator into shutdown mode. This pin must not be left floating. This pin is the feedback connection to the center tap of an external resistor FB 2 16 I divider network that sets the output voltage. This pin must not be left floating. (Adjustable version only.) GND 4 12 — Ground IN 5 5,6,7,8 I Unregulated input to the device. 2, 3,4, No connection. This pin can be left floating or connected to GND to allow better NC — O 13,14,17 thermal contact to the top-side plane. OUT 3 1, 18, 19, 20 O Regulated output voltage. No capacitor is required on this pin for stability. PAD/TAB — — — Should be soldered to the ground plane for increased thermal performance. Power-Good (PG) is an open-drain, active-high output that indicates the status of VOUT. When VOUT exceeds the PG trip threshold, the PG pin goes into a high-impedance state. When VOUT is below this threshold the pin is driven to a PG — 9 O low-impedance state. A pullup resistor from 10 k Ω to 1 MΩ should be connected from this pin to a supply up to 5.5 V. The supply can be higher than the input voltage. Alternatively, the PG pin can be left floating if output monitoring is not necessary. This pin is the sense connection to the load device. This pin must be SNS 2 16 I connected to VOUT and must not be left floating. (Fixed versions only.) Soft-Start pin. A capacitor connected on this pin to ground sets the start-up SS 1 15 — time. If this pin is left floating, the regulator output soft-start ramp time is typically 100 μs. Copyright © 2005–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: TPS74201 |
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