参数资料
型号: MAX16915AUB/V+T
厂商: Maxim Integrated
文件页数: 6/10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:
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
Functional Diagram
V CC
REG
1.20V
GATE1
SENSE IN
OV1
GATE2
SENSE OUT
SET
TO V CC FOR
MAX16914
TO SENSE OUT
SHDN
BANDGAP
BIAS
FOR MAX16915
OV
OV1
MAX16914
MAX16915
Detailed Description
The MAX16914/MAX16915 are ultra-small, low-quies-
cent, high load-current, overvoltage-protection circuits
for automotive or industrial applications. These devices
monitor the input and output voltages and control two
p-channel MOSFETs to protect downstream loads from
reverse-battery, overvoltage, and high-voltage transient
conditions and prevent downstream tank capacitors
from discharging into the source (back-charging).
One MOSFET (P1) eliminates the need for external
diodes, thus minimizing the input voltage drop and
provides back-charge and reverse-battery protection.
The second MOSFET (P2) isolates the load or regulates
the output voltage during an overvoltage condition.
These ICs allow system designers to size the external
p-channel MOSFET to their load current, voltage drop,
and board size.
6
TERM
SWITCH
TERM
GND
Overvoltage Switch-Off Controller
(MAX16914)
In the MAX16914, the input voltage is monitored (TERM
is internally shorted to V CC —see the Functional Diagram )
making the device an overvoltage switch-off controller.
As the V CC voltage rises, and the programmed overvolt-
age threshold is tripped, the internal fast comparator
turns off the external p-channel MOSFET (P2), pulling
GATE2 to V CC to disconnect the power source from
the load. When the monitored voltage goes below the
adjusted overvoltage threshold, the MAX16914 enhanc-
es GATE2, reconnecting the load to the power source.
Maxim Integrated
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