參數(shù)資料
型號(hào)： MAX6437
廠商： Maxim Integrated Products, Inc.
英文描述： Low-Power, Single/Dual-Level Battery Monitors with Hysteresis
中文描述： 低功耗、單/雙電平電池監(jiān)測(cè)器，帶有滯回
文件頁(yè)數(shù)： 9/20頁(yè)
文件大小： 319K
代理商： MAX6437
M
Low-Power, Single/Dual-Level Battery Monitors
with Hysteresis
_______________________________________________________________________________________
9
Hysteresis
Hysteresis increases the comparator
’
s noise margin by
increasing the upper threshold or decreasing the lower
threshold (see Figure 8). The hysteresis prevents the
output from oscillating (chattering) when BATT or V
DD
is near the low-battery threshold. This is especially
important for applications where the load on the battery
creates significant fluctuations in battery voltages.
Fixed Hysteresis (MAX6427–MAX6432)
The MAX6427/MAX6428/MAX6429 total hysteresis is the
difference between the factory-trimmed V
LTH
and V
HTH.
For the MAX6430/MAX6431/MAX6432, the total hysteresis
is the difference between the factory-trimmed V
HTH-
and
V
HTH+
or V
LTH-
and V
LTH+
values, approximately 5%.
Adjustable Hysteresis (MAX6433–MAX6438)
Figure 7 shows the correct connections for the external
resistor-dividers. To adjust the low-battery threshold
and hysteresis connect resistor R1 between V
DD
and
LTHIN, resistor R2 between LTHIN and HTHIN, and R3
between HTHIN and GND. The hysteresis for the
MAX6433
–
MAX6438 is determined by an external resis-
tor-divider network (see
Resistor-Value Selection
sec-
tion of Applications Information). The hysteresis for the
MAX6436/MAX6437/MAX6438 is the differences
between V
HTHIN-
and V
HTHIN+
(~5%) or V
LTHIN-
and
V
LTHIN+
(~5%).
R
Q
S
Q
LBO TIMEOUT
PERIOD
V
BATT
V
DD
LTHIN
HTHIN
( ) ARE FOR THE MAX6435
EXTERNAL
RESISTOR-
DIVIDER
615
mV
V
DD
LBO
(LBO)
+
-
Figure 3. MAX6433/MAX6434/MAX6435 Functional Diagram
相關(guān)PDF資料
PDF描述
MAX6438 Low-Power, Single/Dual-Level Battery Monitors with Hysteresis
MAX6443 レP Reset Circuits with Long Manual Reset Setup Period
MAX6443US__L-T レP Reset Circuits with Long Manual Reset Setup Period
MAX6444US__L-T レP Reset Circuits with Long Manual Reset Setup Period
MAX6520 50ppm/∑C, SOT23, 3-Terminal, 1.2V Voltage Reference
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6437UT 制造商:Maxim Integrated Products 功能描述:LOW-POWER SINGLE/DUAL-LEVEL BATTER - Rail/Tube
MAX6437UT+ 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 6PIN SOT-23 - Rail/Tube
MAX6437UT+T 功能描述:電池管理 Dual Battery Monitor RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MAX6437UT-T 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MAX6438UT 制造商:Maxim Integrated Products 功能描述:LOW-POWER SINGLE/DUAL-LEVEL BATTER - Rail/Tube
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