说明
MIC2027和MIC2077是四路高边MOSFET开关,针对需要电路保护的通用配电进行了优化。MIC2027/77内部限流,并具有热关机功能,可保护设备和负载。MIC2077提供“智能”热关机功能,可降低故障模式下的电流消耗。当发生热关机故障时,输出被锁定,直到故障负载被移除。移除负载或切换启用输入将重置设备输出。这两种设备都采用了软启动电路,该电路在使用高电容负载的应用中最大限度地减少浪涌电流。故障状态输出标志在过电流和热关闭条件下被断言。瞬态限流故障经过内部过滤。MIC2027/77有16引脚窄(150密耳)和宽(300密耳)SOIC封装。
特性
- 150mO maximum on-resistance per channel
- 2.7V to 5.5V operating range
- 500mA minimum continuous current per channel
- Short-circuit protection with thermal shutdown
- Thermally isolated channels
- Fault status flag with 3ms filter eliminates false assertions
- Undervoltage lockout
- Reverse current flow blocking (no "body diode")
- Circuit breaker mode (MIC2077) reduces power consumption
- Logic-compatible inputs
- Soft-start circuit
- Low quiescent current
- UL recognized
参数
类型 | 描述 |
Driver Type | USB Power Dist |
Type | Quad |
Vin Min (V) | 2.7 |
Vin Max (V) | 5.5 |
Current Limit Fixed (Min) | 500mA |
Current Limited | Yes |
RDS ON @5V (mO) | 150 |
Enable Logic | Active High |
Oja (C/W) | 112, 120 |
Rev Block Diode | Yes |
UVLO | Yes |
Thermal Shutdown | Latched |
Fault Flag | Yes |
Flag Transient Filter | Yes |
UL Approved | Yes |
Switch Element | N-Ch |



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