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TPS7A6550-Q1 Fiches technique(PDF) 10 Page - Texas Instruments

No de pièce TPS7A6550-Q1
Description  300-mA, 40-V, Low-Dropout Regulator With 25-UA Quiescent Current
Download  26 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS7A6550-Q1 Fiches technique(HTML) 10 Page - Texas Instruments

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background image
ON
OFF
9.2
9.6
Hysteresis
V (V)
IN
ON
OFF
7.8
7.9
Hysteresis
V (V)
IN
VIN(POWERUP)
VIN
VOUT
5V or 3.3V
0
0
TPS7A6533-Q1, TPS7A6550-Q1
SLVSA98D – MAY 2010 – REVISED DECEMBER 2015
www.ti.com
Feature Description (continued)
Figure 15. Power-Up Sequence
7.3.2 Charge-Pump Operation
These devices have an internal charge pump that turns on or off depending on the input voltage and the output
current. The charge pump switching circuitry does not cause conducted emissions to exceed required thresholds
on the input voltage line. For a given output current, the charge pump stays on at lower input voltages and turns
off at higher input voltages. The charge-pump switching thresholds are hysteretic. Figure 16 and Figure 17 show
typical switching thresholds for the charge pump at light (IOUT < approximately 2 mA) and heavy (IOUT >
approximately 2 mA) loads, respectively.
Figure 16. Charge-Pump Operation at Light Loads
Figure 17. Charge-Pump Operation at Heavy Loads
10
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Product Folder Links: TPS7A6533-Q1 TPS7A6550-Q1


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