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| 型号： | MAX892LEUA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | IC P-CHANNEL SWITCH 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 高端开关 |
| 输出数： | 1 |
| Rds（开）： | 420 毫欧 |
| 内部开关： | 是 |
| 电流限制： | 250mA |
| 输入电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 管件 |
| 产品目录页面： | 1410 (CN2011-ZH PDF) |
Current-Limited, High-Side
P-Channel Switches with Thermal Shutdown
Output Capacitor
Connect a 0.1μF capacitor from OUT to GND. One
function of this capacitor is to prevent inductive para-
sitics from pulling OUT negative during turn-off.
MAX891L
MAX892L
SET
GND
R SET
Layout and Thermal-Dissipation
Consideration
To take full advantage of the switch-response time to
output short-circuit conditions, it is very important to
keep all traces as short as possible to reduce the effect
of undesirable parasitic inductance. Place input and
output capacitors as close as possible to the device
(no more than 5mm).
Under normal operating conditions, the package dissi-
pates and channels heat away. Calculate maximum
Figure 2. Setting the Current Limit
Thermal Shutdown
The MAX891L/MAX892L feature thermal shutdown. The
switch turns off when the junction temperature exceeds
+135°C. Once the device cools by 10°C, the switch
turns back on. If the fault short-circuit condition is not
removed, the switch will cycle on and off, resulting in a
pulsed output.
Fault Indicator
The MAX891L/MAX892L provide a fault output ( FAULT ).
This open-drain output goes low when in current limit or
when the die temperature exceeds +135°C. During
start-up, FAULT is low until the switch is fully on and no
over-current condition exists. A 100k ? pull-up resistor
from FAULT to IN provides a logic-control signal.
__________Applications Information
Input Capacitor
To limit input voltage drop during momentary output
short-circuit conditions, connect a capacitor from IN to
GND. A 1μF ceramic capacitor is adequate for most
applications; however, higher capacitor values further
reduce voltage drop at the input.
power as follows:
P = I 2 LIM x R ON
where R ON is the on-resistance of the switch.
When the output is short circuited, voltage drop across
the switch equals the input supply. Hence, the power
dissipated across the switch increases, as does the die
temperature. If the fault condition is not removed, the
thermal-overload-protection circuitry turns the switch off
until the die temperature falls by 10°C. A ground plane
in contact with the device helps dissipate additional
heat.
___________________Chip Information
TRANSISTOR COUNT: 396
SUBSTRATE CONNECTED TO GND
_______________________________________________________________________________________
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX892LEUA+ | 功能描述:电源开关 IC - 配电 Current-Limited High-Side PCh 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 |
| MAX892LEUA+T | 功能描述:电源开关 IC - 配电 Current-Limited High-Side PCh 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 |
| MAX892LEUA-T | 功能描述:电源开关 IC - 配电 Current-Limited High-Side PCh 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 |
| MAX8930EVKIT+ | 制造商:Maxim Integrated Products 功能描述:EVALUATION KIT FOR MAX8930 - Boxed Product (Development Kits) |
| MAX8930EWJ+T | 功能描述:LED照明驱动器 WLED Charge Pump RGB Boost LDOs & ALC RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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