參數(shù)資料
型號(hào)： LTC6801HG#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO36
封裝： LEAD FREE, PLASTIC, SSOP-36
文件頁(yè)數(shù)： 10/28頁(yè)
文件大?。?/td> 265K
代理商： LTC6801HG#TRPBF
LTC6801
18
6801fb
Self Test Pins
The SLT pin is used to initiate a self test. It is congured
as an open collector input/output. The pin should be nor-
mally tied to VREG with a resistor greater than or equal to
100k or oated. The pin may be pulled low at any time to
initiate a self test cycle.
The device will automatically initiate a self test if SLT has
not been externally activated for 1024 measurement cycles,
and pull down the SLT pin internally to indicate that it is
in self test mode.
The SLTOK pin is a simple logic output. If the previous self
test failed the output is held low, otherwise the output will
be high. The SLTOK pin is high upon power-up. The SLTOK
output can be connected to a microcontroller through an
isolation path.
The LTC6801 status output will remain active while the
SLTOK pin is low. The LTC6801 will continue to monitor
cells if the self test fails. If the next self test passes, the
SLTOK output returns high.
Reference and Comparator Verication
A secondary internal bandgap voltage reference (REF2)
is included in the LTC6801 to aid in verication of the
reference and comparator. During the self test cycle, the
comparator and main reference are used to measure the
REF2 voltage.
To verify the comparator functionality, the upper and
lower thresholds are rst set in a close window around
the expected REF2 voltage and the comparator output is
veried. Then the upper threshold is set below the REF2
voltage and the comparator output is veried again. Lastly,
the lower threshold is set above the REF2 voltage and the
comparator output is veried a third time.
The self test guarantees that VREF is within 5% of the
specied nominal value. Also, this test guarantees the
analog portion of the ADC is working.
High Voltage Multiplexer Verication
The most dangerous failure mode of the high voltage
multiplexer would be a stuck bit condition in the address
decoder. Such a fault would cause some channels to be
measured repeatedly while other channels are skipped.
A skipped channel could mean a bad cell reading is not
detectable. Other multiplexer failures, like the simultaneous
selection of multiple channels, or shorts in the signal path,
would result in an undervoltage or overvoltage condition
on at least one of the channels.
The LTC6801 incorporates circuitry to ensure that
all requested channels are measured during each
measurement cycle and none are skipped. If a channel is
skipped, an error is agged during the self test cycle.
ADC Decimation Filter Verication
The ADC decimation lter test veries that the digital cir-
cuits in the ADC are working, i.e. there are no stuck bits
in the ADC output register. During each self test cycle,
the LTC6801 feeds two test waveforms into the ADC. The
internally generated waveforms were designed to generate
complementary zebra patterns (alternating 0’s and 1’s) at
the ADC output. If either of the waveforms generates an
incorrect output value, an error is agged during the self
test cycle.
Open Cell Connection Detection
The open connection detection algorithm ensures that an
open circuit is not misinterpreted as a valid cell reading.
APPLICATIONS INFORMATION
相關(guān)PDF資料
PDF描述
LTC6801IG#TRPBF 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO36
LTC6801IG#PBF 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO36
LTC693IS#PBF 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
LTC694CN-3.3 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8
LTC694IN-3.3 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8
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LTC6801IG#PBF 功能描述:IC BATTERY MONITOR LI-ION 36SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關(guān)文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標(biāo)準(zhǔn)包裝:4,000 系列:- 功能:燃料，電量檢測(cè)計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2
LTC6801IG#TRPBF 功能描述:IC BATTERY MONITOR LI-ION 36SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR)
LTC6801IGPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Independent Multicell Battery Stack Fault Monitor
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