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参数资料
| 型号： | MAX14523BATA/V+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/11页 |
| 文件大小： | 0K |
| 描述： | IC CURRENT LIMIT SWITCH 8TDFN |
| 标准包装： | 2,500 |
| 系列： | * |
MAX14523A/MAX14523AL/MAX14523B/MAX14523C
250mA to 1.5A, Adjustable
Current-Limit Switches
8
_______________________________________________________________________________________
Functional Diagram
MAX14523A
MAX14523AL
MAX14523B
MAX14523C
BUFFER
IN
N.C.
THERMAL
SHUTDOWN
CONTROL
LOGIC
REVERSE-
CURRENT
PROTECTION
TIMING
CIRCUITRY
BUFFER
CURRENT
LIMIT
BANDGAP
REFERENCE
OUT
FLAG
SETI
*( ) FOR THE MAX14523AL ONLY
ON/(ON)*
GND
Detailed Description
The MAX14523A/MAX14523AL/MAX14523B/MAX14523C
programmable current-limit switches operate from
+1.7V to +5.5V and provide internal current limiting
adjustable from 250mA to 1.5A. These devices feature
a fixed blanking time, and a FLAG output that notifies
the processor when a fault condition is present.
Programmable Current Limit/Threshold
A resistor from SETI to GND sets the current
limit/threshold for the switch (see the
Setting the
Current Limit/Threshold section). If the output current is
limited at the current threshold value for a time equal to
or longer than tBLANK, the output flag asserts and the
MAX14523A/MAX14523AL enter the autoretry mode,
the MAX14523B latches off the switch, and the
MAX14523C enters the continuous current-limit mode.
Autoretry (MAX14523A/MAX14523AL)
When the forward current reaches the current thresh-
old, the tBLANK timer begins counting (Figure 2). FLAG
asserts if the overcurrent condition is present for
tBLANK or longer. The timer resets if the overcurrent
condition disappears before the blanking time (tBLANK)
has elapsed. A retry time delay (tRETRY) starts immedi-
ately after the blanking time has elapsed. During that
time, the switch latches off. At the end of tRETRY, the
switch turns on again. If the fault still exists, the cycle
repeats. If the fault has been removed, the switch stays
on. During this cycle, FLAG stays low. In autoretry, if
the die temperature exceeds +170°C (typ) due to self
heating, the MAX14523A/MAX14523AL go into thermal
shutdown until the die temperature drops by approxi-
mately 15°C (see the
Thermal Shutdown section.)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX14523BETA+ | 制造商:Maxim Integrated Products 功能描述:250MA TO 1.5A, ADJUSTABLE CURRENT-LIMIT SWITCHES - Rail/Tube |
| MAX14523CATA+ | 制造商:Maxim Integrated Products 功能描述:250MA TO 1.5A ADJUSTABLE CURRENT-L - Rail/Tube |
| MAX14523CATA+T | 功能描述:电源开关 IC - 配电 Adjustable Current Limit Switch RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MAX14523EVKIT+ | 功能描述:电源开关 IC - 配电 EVKits RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MAX14525ETA+ | 制造商:Maxim Integrated Products 功能描述:BATTERY SWITCH WITH FOUR ENABLE INP - Rail/Tube |
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