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| 型号： | MAX6442KAOSRD3+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/14页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY MON DUAL SOT23-8 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 电池监控器 |
| 电池化学： | 碱性，锂离子，镍镉，镍金属氢化物 |
| 电源电压： | 1 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-8 |
| 供应商设备封装： | SOT-23-8 |
| 包装： | 带卷 (TR) |
Low-Power, Single-/Dual-Level Battery Monitors
with Hysteresis and Integrated μP Reset
Pin Description
PIN
MAX6439/
MAX6440
1
MAX6441/
MAX6442
1
NAME
V BATT
FUNCTION
Battery Voltage Input. Input for battery voltage threshold monitors and device power supply
if V BATT is greater than V CC .
Manual Reset Input, Active-Low, Internal 1.5k ? Pullup to V CC . Pull low to assert a one-shot
2
3
MR
edge-triggered RESET output for the MR reset timeout period. Leave unconnected or
connect to V CC if unused. The MR input is debounced for MR rising edges to prevent false
reset events.
Low-Battery Output, Active Low, Open Drain. LBO is asserted when V BATT drops below the
3
—
LBO
LTH specification and remains asserted until V BATT rises above the HTH specification for at
least 150ms.
Reset Output, Active Low, Push-Pull or Open Drain. RESET changes from high to low when
the V CC input drops below the selected reset threshold and remains low for the V CC reset
timeout period after V CC exceeds the reset threshold. RESET is one-shot edge-trigger
4
5
RESET
pulsed low for the MR reset timeout period when the MR input is pulled low. RESET is an
open-drain output for the MAX6439/MAX6441, and a push-pull output for the
MAX6440/MAX6442. The push-pull outputs are referenced to V CC . RESET is guaranteed to
be in the correct logic state for V BATT or V CC > 1.0V.
5
6
2
8
GND
V CC
Ground
V CC Voltage Input. Input for V CC reset threshold monitor and device power supply if V CC is
greater than V BATT .
Low-Battery Output High, Active Low, Open Drain. LBOH is asserted when V BATT drops
—
6
LBOH
below the HTH- specification. LBOH is deasserted when V BATT rises above the HTH+
specification for at least 150ms.
Low-Battery Output Low, Active Low, Open Drain. LBOL is asserted when V BATT drops
—
7
LBOL
below the LTH- specification. LBOL is deasserted when V BATT rises above the LTH+
specification for at least 150ms.
Low-Battery Output Low/High, Active Low, Open Drain. LBOLH is asserted when V BATT
—
4
LBOLH
drops below the LTH- specification. LBOLH is deasserted when V BATT rises above the
HTH+ specification for at least 150ms.
Detailed Description
The MAX6439–MAX6442 family is available with several
monitoring options. The factory-trimmed thresholds
eliminate the requirement for external components. The
MAX6439/MAX6440 have single low-battery outputs
and the MAX6441/MAX6442 have dual low-battery out-
puts (see Figure 1a and Figure 1b).
The MAX6439–MAX6442 combine a 1.23V reference
with two comparators, logic, and timing circuitry to pro-
vide the user with information about the charge state of
the power-supply batteries. The MAX6441/MAX6442
monitor separate high-voltage and low-voltage thresh-
olds to determine battery status. The output(s) can be
used to signal when the battery is charged, when the
battery is low, and when the battery is empty. Factory-
trimmed thresholds are ideal for monitoring single-cell
Li+ or multicell alkaline/NiCd/NiMH power supplies.
When the power-supply voltage drops below the speci-
fied low threshold, the low-battery output asserts. When
the voltage rises above the specified high threshold fol-
lowing a 150ms (min) timeout period, the low-battery
output is deasserted. This ensures the supply voltage
_______________________________________________________________________________________
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6442KAOSRD7 | 制造商:Maxim Integrated Products 功能描述:LOW-POWERSINGLE/DUAL-LEVEL BATTERY - Rail/Tube |
| MAX6442KAOSRD7+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 2V/2.1V 8PIN SOT-23 - Rail/Tube |
| MAX6442KAOSRD7+T | 功能描述:电池管理 Single Battery Monitor RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX6442KAOSRD7-T | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX6442KAOSSD3 | 制造商:Maxim Integrated Products 功能描述:LOW-POWERSINGLE/DUAL-LEVEL BATTERY - Rail/Tube |
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