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TPS3831K50DQNT Datasheet(PDF) 11 Page - Texas Instruments

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Part # TPS3831K50DQNT
Description  Ultralow Power, Supply Voltage Supervisor
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS3831K50DQNT Datasheet(HTML) 11 Page - Texas Instruments

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4.7 PH
10 PF
10 PF
5 k:
L
VIN
VOUT
RI
GND
FB
EN
One-Cell
Alkaline
VDD
GND
RESET
TPS3839A09
3.3 V at 40 mA
TPS61261
TPS3831
TPS3839
www.ti.com
SBVS193B – JUNE 2012 – REVISED APRIL 2013
APPLICATION EXAMPLE: SINGLE ALKALINE CELL MONITORING
Low operating voltage and threshold options make the TPS383x well-suited for monitoring single-cell, alkaline-
battery applications. Figure 18 shows the TPS3839A09 used to disable a boost converter when the cell voltage
reaches 0.9 V, which is the end of the discharge voltage for a single alkaline battery cell. When the cell voltage
reaches 0.9 V, the TPS61261 enable pin is driven low. This setting disables the TPS61261 and places it in a
low-current shutdown state. The combination of the TPS3839 and TPS61261 consumes only 250 nA (typical)
from the discharged battery.
Figure 18. Disabled Boost Converter
Copyright © 2012–2013, Texas Instruments Incorporated
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Product Folder Links: TPS3831 TPS3839


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