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| 型号： | MAX6440UTEIWD3+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/14页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY MON SNGL SOT23-6 |
| 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-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 带卷 (TR) |
Low-Power, Single-/Dual-Level Battery Monitors
with Hysteresis and Integrated μP Reset
V BATT
V BATT
MAX6441
LTH
MAX6440
5%
HYST
LTH
DETECT
LBOL
DETECT
LBO
R
S
Q
Q
LBO
TIMEOUT
PERIOD
LBOH
V CC
HTH
DETECT
1.23V
LBO TIMEOUT
PERIOD
V CC
V CC
5%
HYST
1.23V
HTH
DETECT
LBOLH
V TH
DETECT
RESET
TIMEOUT
PERIOD
V CC
RESET
V TH
DETECT
RESET
TIMEOUT
PERIOD
RESET
MR
Figure 1a. Functional Diagram
has stabilized before power-converter or microproces-
sor activity is enabled.
These devices also have an independent μP supervisor
that monitors V CC and provides an active-low reset out-
put. A manual reset function is available to allow the
user to reset the μP with a push-button.
Low-Battery Output
The low-battery outputs are available in active-low
( LBO , LBOL , LBOH , LBOLH ), open-drain configura-
tions. The low-battery outputs can be pulled to a volt-
age independent of V CC or V BATT , up to 5.5V. This
allows the device to monitor and operate from direct
battery voltage while interfacing to higher voltage
microprocessors.
The MAX6439/MAX6440 single-output voltage monitors
provide a single low-battery output, LBO . These fixed-
threshold devices assert LBO when V BATT drops below
V LTH and remain asserted for at least 150ms after
V BATT rises above V HTH (see Figure 2). The MAX6441/
MAX6442 triple-output voltage monitors provide three
V CC
MR
Figure 1b. Functional Diagram
low-battery outputs: LBOH , LBOL , and LBOLH . LBOH
asserts when V BATT drops below V HTH- and remains
asserted for at least 150ms after V BATT rises above
V HTH+ . LBOL asserts when V BATT drops below V LTH-
and remains asserted for at least 150ms after V BATT
rises above V LTH+ . LBOLH asserts when V BATT drops
below V LTH- and remains asserted for at least 150ms
after V BATT rises above V HTH+ (see Figure 3). For fast-
rising V BATT input, the LBOL timeout period must com-
plete before the LBOH / LBOLH timeout period begins.
Reset Output
The MAX6439–MAX6442 provide an active-low reset
output ( RESET ). RESET is asserted when the voltage at
V CC falls below the reset threshold level. Reset remains
asserted for the reset timeout period after V CC exceeds
the threshold. If V CC goes below the reset threshold
before the reset timeout period is completed, the inter-
nal timer restarts. The MAX6439/MAX6441 have open-
drain reset outputs, while the MAX6440/MAX6442 have
push-pull reset outputs (see Figure 4).
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6440UTEIWD7 | 制造商:Maxim Integrated Products 功能描述:LOW-POWERSINGLE/DUAL-LEVEL BATTERY - Rail/Tube |
| MAX6440UTEIWD7+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 3.5V 6PIN SOT-23 - Rail/Tube |
| MAX6440UTEIWD7+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 |
| MAX6440UTEIWD7-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 |
| MAX6440UTEIYD3 | 制造商:Maxim Integrated Products 功能描述:LOW-POWERSINGLE/DUAL-LEVEL BATTERY - Rail/Tube |
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