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LM74800QDRRRQ1
+Lista de Materiais3-V TO 65-V, AUTOMOTIVE IDEAL DI
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FabricanteTexas Instruments
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Peça do Fabricante #LM74800QDRRRQ1
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Pacote WFDFN-12
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Especificações
| Atributo | Valor |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | Automotive, AEC-Q100 |
| Part Status | Active |
| Type | N+1 ORing Controller |
| FET Type | N-Channel |
| Ratio - Input: Output | 1:1 |
| Internal Switch(s) | No |
| Delay Time - ON | 2.6 µs |
| Delay Time - OFF | 500 ns |
| Current - Output (Max) | 5A |
| Supply Current | 413 µA |
| Voltage - Supply | 3V ~ 65V |
| Applications | Automotive, Redundant Power Supplies |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount, Wettable Flank |
Visão Geral
Description
Key features of the LM74800QDRRRQ1 include an integrated charge pump for driving external MOSFETs, a fast reverse polarity protection response, and robust overcurrent protection capabilities. It supports load dump protection up to 65 V, ensuring system stability even in harsh electrical environments.
Moreover, the device has a built-in overvoltage clamp and active diode functionality that enables seamless transition between input power sources, thereby maintaining power continuity. Its AEC-Q100 qualification ensures reliability in automotive applications. The LM74800QDRRRQ1’s compact form factor makes it suitable for space-constrained designs, providing designers with flexibility and reliability in automotive protection circuits.
Equivalent
1. LTC4359 - Low Voltage Ideal Diode Controller by Analog Devices.
2. MAX16151 - Ideal Diode Controller by Maxim Integrated.
3. NIS5020 - Single Ideal Diode with Oring Controller by ON Semiconductor.
4. ADM1270 - Hot Swap Controller with PWM Boost Ideal Diode Driver by Analog Devices.
These alternatives offer similar functionalities but check specific requirements like voltage range and package.
Features
1. Wide Input Voltage Range: Supports 3.2 V to 65 V, accommodating various automotive and industrial applications.
2. Ideal Diode Control: Provides reverse battery protection and minimizes power dissipation by controlling an external N-channel MOSFET.
3. ORing Controller: Facilitates load sharing and redundancy in dual battery systems.
4. Overvoltage Protection: Protects against voltage spikes by driving the MOSFET to turn off when input voltage exceeds a set threshold.
5. Operating Temperature: Designed for high reliability, with an operating range of -40°C to 125°C.
6. Low Quiescent Current: Enhances efficiency with a minimal current draw during operation.
7. Enhanced Safety Features: Includes under-voltage lockout (UVLO) and fault indication for system robustness.
8. Compact Package: Available in a small 10-pin VSON package, optimizing space on PCBs.
These features make the LM74800QDRRRQ1 suitable for power management in automotive and other demanding environments.
Pinout
Key functions of the LM74800QDRRRQ1 include:
1. Reverse Battery Protection: Prevents damage to the circuit if the battery is connected with reverse polarity.
2. Reverse Current Blocking: Stops current from flowing back into the input when the supply is turned off or the input voltage is lower than the output.
3. Undervoltage Lockout (UVLO): Ensures that the device operates only when the input voltage is above a specified threshold.
4. Enable Pin: Allows the device to be turned on or off through an external signal.
5. Fault Indicator: Provides diagnostic information about fault conditions such as overcurrent or thermal shutdown.
This controller is typically used in automotive and industrial power management systems to enhance reliability and efficiency.