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BQ2018TS Datasheet(PDF) 3 Page - Texas Instruments

Part # BQ2018TS
Description  Power Minder IC
PDF  21 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ2018TS Datasheet(HTML) 3 Page - Texas Instruments

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Note:
VSRO is the voltage difference between SR1 and SR2 plus the offset voltage VOS.
3
BD201801.eps
Differential
Dynamically
Balanced VFC
System
I/O
and
Control
RAM
and
Counters
128 x 8
Counter
Control
Temperature-
Compensated
Precision
Oscillator
Bandgap
Voltage
Reference
Temperature
Sensor
SR1
SR2
HDQ
RBI
VDD (Internal)
Optional
(External)
ds
g
REG
VCC
VSS
Timer
Calibration
and Power
Control
WAKE
Vref
Figure 1. bq2018 Block Diagram
bq2018
HDQ Pin
DCR/CCR/SCR
WOE
WAKE
Operating State
HDQ High
yes
|VSRO| > VWOE
Low
Normal
HDQ High
yes
|VSRO| < VWOE
High Z
Normal
HDQ Low
no
|VSRO| < VWOE
High Z
Sleep
Table 1. Operational States



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