Overview
The LM66200DRLR is a dual ideal diode device manufactured by Texas Instruments. It operates within a voltage range of 1.6 V to 5.5 V and has a maximum continuous current rating of 2.5 A per channel. This device utilizes N-channel MOSFETs to switch between supplies, providing a controlled slew rate when voltage is first applied. The LM66200 is designed for low power consumption, featuring a quiescent current of 1.32 µA (typical) and a standby current of 50 nA (typical), making it ideal for battery-powered systems. The device includes an active low enable pin that allows for shutdown mode when neither supply is needed.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 1.6 to 5.5 | V |
| Maximum Continuous Current | 2.5 | A |
| On-Resistance (typical) | 40 | mΩ |
| Standby Current (typical) | 50 | nA |
| Quiescent Current (typical) | 1.32 | µA |
| Controlled Output Slew Rate (typical at 3.3 V) | 1.3 ms | |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | SOT-5X3 (DRL) | |
| Pins | 8 |
Key Features
- Automatic diode switchover to prioritize the highest voltage supply
- Controlled output slew rate to minimize inrush current
- Reverse current blocking when VOUT > VINx
- Thermal shutdown protection
- Low quiescent and standby currents for extended battery life
- Active low enable pin for device shutdown
- Status pin for indicating the active input channel
- Soft-start feature to minimize output voltage drop during switchover
Applications
- Electricity meters
- Motor drives
- Building automation
- Electronic point of sale (POS) systems
- Asset trackers
Q & A
- What is the input voltage range of the LM66200DRLR?
The input voltage range is from 1.6 V to 5.5 V.
- What is the maximum continuous current rating per channel?
The maximum continuous current rating is 2.5 A per channel.
- What is the typical on-resistance of the LM66200DRLR?
The typical on-resistance is 40 mΩ.
- How does the device handle low power consumption?
The device features a low quiescent current of 1.32 µA (typical) and a standby current of 50 nA (typical), making it suitable for battery-powered systems.
- What is the purpose of the active low enable pin?
The active low enable pin allows the user to disable both channels, putting the device into shutdown mode when neither supply is needed.
- How does the device handle thermal protection?
The device includes thermal shutdown protection to prevent overheating.
- What is the controlled output slew rate feature?
The controlled output slew rate feature minimizes inrush current when voltage is first applied, with a typical slew rate of 1.3 ms at 3.3 V.
- What is the purpose of the status pin?
The status pin indicates which input channel is powering the output, pulled high for VIN1 and low for VIN2.
- What are some common applications of the LM66200DRLR?
Common applications include electricity meters, motor drives, building automation, electronic point of sale systems, and asset trackers.
- How does the device handle reverse current blocking?
The device blocks reverse current when VOUT > VINx, preventing backflow of current.
