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参数资料
| 型号： | MAX891LEUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | IC SW P-CH HS 8-MSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 高端 |
| 输入类型： | 非反相 |
| 输出数： | 1 |
| 导通状态电阻： | 120 毫欧 |
| 电流 - 输出 / 通道： | 500mA |
| 电流 - 峰值输出： | 750mA |
| 电源电压： | 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： | 带卷 (TR) |
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 |
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| MAX8922ETB+T | 功能描述:电池管理 Integrated Circuits (ICs) 电池管理 - IC BATTERY CHARGER SGL 10TDFN 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 |
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| MAX8925EWN+ | 制造商:Maxim Integrated Products 功能描述:MAX8925EWN+ |
| MAX8925EWN+T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| MAX8929EWA+T | 制造商:Maxim Integrated Products 功能描述:STANDARD PRODUCTS - Tape and Reel 制造商:Maxim Integrated Products 功能描述:MAX8929EWA+T |
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