- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383478 > MAX6442UTM (Maxim Integrated Products, Inc.) GT 7C 7#12 PIN RECP LINE PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX6442UTM |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | GT 7C 7#12 PIN RECP LINE |
| 中文描述： | 低功耗，電池監(jiān)視器Single-/Dual-Level滯和集成？P復(fù)位 |
| 文件頁數(shù)： | 10/14頁 |
| 文件大?。?/td> | 235K |
| 代理商： | MAX6442UTM |
M
Manual Reset
Many microprocessor-based products require manual
reset capability, allowing the operator, a test technician,
or external logic circuitry to initiate a reset while the
monitored supplies remain above their reset thresholds.
These devices have a dedicated active-low
MR
pin.
When
MR
is pulled low,
RESET
asserts a one-shot low
pulse for the
MR
reset timeout period. The
MR
input has
an internal 1.5k
pullup resistor to V
CC
and can be left
unconnected if not used.
MR
can be driven with CMOS-
logic levels, open-drain/open-collector outputs, or a
momentary push-button switch to GND (the MR function
is internally debounced for the t
DEB
timeout period) to
create a manual reset function. If
MR
is driven from long
cables, or if the device is used in a noisy environment,
connect a 0.1μF capacitor from
MR
to GND to provide
additional noise immunity (see Figure 4).
Hysteresis
Hysteresis increases the comparator
’
s noise margin by
increasing the upper threshold or decreasing the lower
threshold. The hysteresis prevents the output from
oscillating (chattering) when V
BATT
is near the low-bat-
tery threshold. This is especially important for applica-
tions where the load on the battery creates significant
fluctuations in battery voltages (see Figure 5).
Applications Information
Li+ Battery Charger Application
The MAX6441/MAX6442 dual-output battery monitors
can be used in conjunction with a battery charger to
provide a system with additional information about the
battery charge state. Many battery chargers, such as
the MAX1879, provide the user with a
CHG
output,
which tells the system when the battery is charged. The
MAX6441/MAX6442 dual-output battery monitors pro-
vide three outputs, which can be used to relay the bat-
tery condition to the system. This information is useful in
determining which system resources can be powered by
the battery at the current charge state (see Figure 6).
Low-Power, Single-/Dual-Level Battery Monitors
with Hysteresis and Integrated μP Reset
10
______________________________________________________________________________________
V
BATT
LBO
t
LBOP
V
HTH
V
LTH
V
HYST
HTH = BATTERY VOLTAGE GOOD, ENABLE OPERATION.
LTH = BATTERY VOLTAGE LOW, SUSPEND/DISABLE OPERATION.
Figure 5. Hysteresis
BATT
GND
1-CELL
Li+
BATTERY
THERM
ADJ
GATE
PULSE-WIDTH
SELECT INPUT
CHG
LED
THERMISTOR
IN
MAX1879
MAX6441
MAX6442
TSEL
GND
LBOL
LBOLH
RESET
LBOH
V
BATT
V
CC
CURRENT-
LIMITED
AC WALL
ADAPTER
IN
OUT
SHDN
DC/DC CONVERTER
Figure 6. Li+ Charger Application (Using MAX1879)
DC/DC
SHDN
MR
V
BATT
RESET
MAX6441
MAX6442
NMI
RESET
μ
P
V
CC
GND
GND
V
CC
Li+
3.6V
LBOL
LBOH
OUT
IN
Figure 7. DC-to-DC Converter Application
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX6442UTN | Low-Power, Single-/Dual-Level Battery Monitors with Hysteresis and Integrated ?P Reset |
| MAX6442UTO | Low-Power, Single-/Dual-Level Battery Monitors with Hysteresis and Integrated ?P Reset |
| MAX6442UTP | Low-Power, Single-/Dual-Level Battery Monitors with Hysteresis and Integrated ?P Reset |
| MAX6453UT16S | uP Supervisors with Separate VCC Reset and Manual Reset Outputs |
| MAX6454UT29S | uP Supervisors with Separate VCC Reset and Manual Reset Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6443US16L | 制造商:Maxim Integrated Products 功能描述:+P RESET CIRCUITS WITH LONG MANUAL - Cut Tape Product |
| MAX6443US16L+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 1.58V 7UA 4PIN SOT-143 - Rail/Tube |
| MAX6443US16L+T | 功能描述:監(jiān)控電路 Single uPower Reset Circuit RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6443US16L-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6443US17L | 制造商:Maxim Integrated Products 功能描述:+P RESET CIRCUITS WITH LONG MANUAL - Rail/Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。