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参数资料
| 型号： | MAX16914AUB/V+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 7/10页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR IDEAL DIODE 10UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 电池备份，工业/汽车，大电流开关 |
| FET 型： | P 沟道 |
| 输出数： | 2 |
| 内部开关： | 无 |
| 电源电压： | 4.5 V ~ 19 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 带卷 (TR) |
MAX16914/MAX16915
Ideal Diode, Reverse-Battery, and Overvoltage Protection
Switch/Limiter Controllers with External MOSFETs
Overvoltage Limiter
Controller (MAX16915)
In the MAX16915, TERM is internally connected to
SENSE OUT (see the Functional Diagram ) allowing the
IC to operate in voltage-limiter mode.
During normal operation, GATE2 is pulled low to fully
enhance the MOSFET. The external MOSFET’s drain
voltage is monitored through a resistor-divider between
TERM, SET, and GND. When the output voltage rises
above the adjusted overvoltage threshold, an internal
comparator pulls GATE2 to V CC turning off P2. When
the monitored voltage goes below the overvoltage
threshold (-4% hysteresis), the p-channel MOSFET (P2)
is turned on again. During a continuous overvoltage
condition, MOSFET (P2) cycles on and off (between the
overvoltage threshold and the hysteresis), generating a
sawtooth waveform with a frequency dependent on the
load capacitance and load current. This process contin-
ues to keep the voltage at the output regulated to within
approximately a 4% window. The output voltage is regu-
lated during the overvoltage transients and MOSFET
(P2) continues to conduct during the overvoltage event,
operating in switched-linear mode.
Caution must be exercised when operating the
MAX16915 in voltage-limiting mode for long durations
Shutdown
The MAX16914/MAX16915 feature an active-low shut-
down input ( SHDN ). Drive SHDN low to switch off FET
(P2), disconnecting the input from the output, thus
placing the IC in low-quiescent-current mode. Reverse-
battery protection is still maintained.
Reverse-Battery Protection
The MAX16914/MAX16915 feature reverse-battery pro-
tection to prevent damage to the downstream circuitry
caused by battery reversal or negative transients. The
reverse-battery protection blocks the flow of current into
the downstream load and allows the circuit designer to
remove series-protection diodes.
Back-Charge Switch-Off
The MAX16914/MAX16915 monitor the input-to-output
differential voltage between SENSE IN and SENSE OUT.
It turns off the external FET (P1) when (V SENSE OUT -
V SENSE IN ) > 25mV (see Figure 1) to prevent discharg-
ing of a downstream tank capacitor into the battery sup-
ply during an input voltage drop, such as a cold-crank
condition or during a superimposed sinusoidal voltage
on top of the supply voltage. It turns on the FET (P1)
again if the back-charge voltage threshold hysteresis of
50mV is satisfied.
due to the MOSFET’s power-dissipation consideration
(see the MOSFET Selection section).
t BC = 10μs (max)
V OUT - V BATT = 50mV
50% (25mV)
V OUT - V BATT = 0V
I OUT
Figure 1. Back-Charge Turn-Off Time
Maxim Integrated
50%
V BATT = 9V
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16915AUB/V+ | 功能描述:监控电路 Over Volt protector Ideal Diode RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16915AUB/V+T | 功能描述:监控电路 Over Volt protector Ideal Diode RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16915AUB+ | 制造商:Maxim Integrated Products 功能描述:IDEAL DIODE, REVERSE-BATTERY, AND OVERVOLTAGE PROTECTION SWI - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC IDEAL DIODE CONTROLLER 10UMAX |
| MAX16915AUB+T | 制造商:Maxim Integrated Products 功能描述:IDEAL DIODE, REVERSE-BATTERY, AND OVERVOLTAGE PROTECTION SWI - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC LED DVR HBRIGHT 4CH UMAX |
| MAX16916GUB/V+ | 功能描述:接口 - 专用 Automotive USB Data Line Protector RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
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