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TPS70612DBVR Datasheet(PDF) 11 Page - Texas Instruments

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Part # TPS70612DBVR
Description  150-mA, 6.5-V, 1-關A IQ Voltage Regulators with Enable
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS70612DBVR Datasheet(HTML) 11 Page - Texas Instruments

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Thermal
Shutdown
Current
Limit
Bandgap
IN
EN
OUT
Logic
GND
Device
TPS706
www.ti.com
SBVS245A – OCTOBER 2014 – REVISED MARCH 2015
7 Detailed Description
7.1 Overview
The TPS706 series are ultralow quiescent current, low-dropout (LDO) linear regulators. The TPS706 offers
reverse current protection to block any discharge current from the output into the input. The TPS706 also
features current limit and thermal shutdown for reliable operation.
7.2 Functional Block Diagram
7.3 Feature Description
7.3.1 Undervoltage Lockout (UVLO)
The TPS706 uses an undervoltage lockout (UVLO) circuit to keep the output shut off until the internal circuitry
operates properly.
7.3.2 Shutdown
The enable pin (EN) is active high. Enable the device by forcing the EN pin to exceed VEN(HI) (0.9 V, minimum).
Turn off the device by forcing the EN pin to drop below 0.4 V. If shutdown capability is not required, connect EN
to IN.
7.3.3 Reverse Current Protection
The TPS706 has integrated reverse current protection. Reverse current protection prevents the flow of current
from the OUT pin to the IN pin when output voltage is higher than input voltage. The reverse current protection
circuitry places the power path in high impedance when the output voltage is higher than the input voltage. This
setting reduces leakage current from the output to the input to 10 nA, typical. The reverse current protection is
always active regardless of the enable pin logic state or if the OUT pin voltage is greater than 1.8 V. Reverse
current can flow if the output voltage is less than 1.8 V and if input voltage is less than the output voltage.
If voltage is applied to the input pin, then the maximum voltage that can be applied to the OUT pin is the lower of
three times the nominal output voltage or 6.5 V. For example, if the 1.2-V output voltage version is used, then the
maximum reverse bias voltage that can be applied to the OUT pin is 3.6 V. If the 3.3-V output voltage version is
used, then the maximum reverse bias voltage that can be applied to the OUT pin is 6.5 V.
Copyright © 2014–2015, Texas Instruments Incorporated
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