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| 型号： | MAX8881EUT50-T |
| 厂商： | Maxim Integrated |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V .2A SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 5V |
| 输入电压： | 最高 12V |
| 电压 - 压降（标准）： | 0.1V @ 50mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 200mA |
| 电流 - 限制（最小）： | 200mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 剪切带 (CT) |
| 其它名称： | MAX8881EUT50-TCT |
12V, Ultra-Low-I Q , Low-Dropout
Linear Regulators with POK
IN
SHDN
REVERSE
BATTERY
PROTECTION
ERROR
MOS DRIVER
P
SHUTDOWN
LOGIC
AMP
WITH I LIMIT
OUT
FB
MAX8881
POK
THERMAL
SENSOR
1.25V
REF
91%
REF
POK
GND
Figure 2. Functional Diagram
Current Limiting
V IN
2.5V TO 12V
C1
1 μ F
IN
MAX8880
OUT
C2
4.7 μ F
V OUT
1.25V TO 5.5V
UP TO 200mA
R3
The MAX8880/MAX8881 include a current limiter. When
the output is shorted to ground, drive to the output
PMOS is limited. The output can be shorted to ground
without damage to the part.
Thermal Overload Protection
Thermal overload protection limits total power dissipa-
FB
tion in the MAX8880/MAX8881. When the internal junc-
SHDN
GND
POK
REGULATION OK
R4
tion temperature exceeds T J = +160°C, the thermal
sensor signals the shutdown logic, turning off the pass
transistor and allowing the IC to cool. The thermal sen-
sor turns the pass transistor on again after the IC’s
junction temperature cools by 15°C, resulting in a
pulsed output during continuous thermal-overload con-
ditions.
Figure 3. Adjustable Output Using External Feedback Resistors
Reverse Battery Protection
The MAX8880/MAX8881 have a unique protection
scheme that limits the reverse supply current to less
than 1mA when V IN is forced below ground. The circuit
monitors the polarity of IN, disconnecting the internal
circuitry and parasitic diodes when the battery is
reversed. This feature prevents the device from electri-
cal stress and damage when the battery is connected
backwards. If reverse battery protection is needed,
drive SHDN through a 100k Ω resistor.
Thermal-overload protection is designed to protect the
MAX8880/MAX8881 in the event of fault conditions. For
continuous operation, do not exceed the absolute maxi-
mum junction temperature rating of T J(MAX) = +150°C.
Operating Region and Power Dissipation
The MAX8880/MAX8881’s maximum power dissipation
depends on the thermal resistance of the case and cir-
cuit board, the temperature difference between the die
junction and ambient air, and the rate of airflow. The
power dissipation in the device is P = I OUT (V IN -
V OUT ). The maximum power dissipation allowed is:
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8882EUT | 制造商:Maxim Integrated Products 功能描述:DUAL LOW-NOISE LOW-DROPOUT 160MA - Rail/Tube |
| MAX8882EUT55+T | 功能描述:低压差稳压器 - LDO Dual 160mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX8882EUT55-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8882EUTA5 | 制造商:Maxim Integrated Products 功能描述:DUAL LOW-NOISE LOW-DROPOUT 160MA - Rail/Tube |
| MAX8882EUTA5+ | 制造商:Maxim Integrated Products 功能描述:REG LDO LIN FIX POS 3.3V/1.8V 0.16A 6PIN SOT-23 - Rail/Tube |
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