Overview
The LTC4412ES6#TRMPBF, produced by Analog Devices Inc., is a Low Loss PowerPath controller designed to control an external P-channel MOSFET. This device creates a near ideal diode function, which is ideal for power switchover or load sharing applications. It allows for highly efficient OR’ing of multiple power sources, extending battery life and reducing self-heating. The LTC4412 operates over a wide supply range of 2.5V to 28V, making it suitable for various power management scenarios, including those involving Li-Ion cells in series.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | LTC4412ES6#TRMPBF |
| Package | 6-Lead Plastic TSOT-23 |
| Temperature Range | –40°C to 85°C |
| Supply Voltage Range | 2.5V to 28V |
| Quiescent Current | 11µA (typical) |
| CTL Input Low Voltage (VIL) | 0.35V |
| CTL Input High Voltage (VIH) | 0.9V |
| Turn-On Time (tS(ON)) | 4.5µs to 25µs |
| Turn-Off Time (tS(OFF)) | 40µs to 75µs |
| Gate Clamp Voltage (VG(ON)) | 7V below the higher of VIN or VSENSE |
Key Features
- Creates a near ideal diode function for power switchover or load sharing.
- Highly efficient OR’ing of multiple power sources.
- Wide supply operating range: 2.5V to 28V.
- Low quiescent current: 11µA (typical), independent of load current.
- Internal voltage clamp for MOSFET protection.
- Automatic disconnection of the load from the battery when an auxiliary power source is connected.
- Supports load sharing between multiple batteries or charging of multiple batteries from a single charger.
- Compliant with RoHS standards.
Applications
- Power switchover and load sharing in battery-powered systems.
- Automatic switching between a battery and a wall adapter.
- Dual battery load sharing with automatic switchover of power from batteries to a wall adapter.
- Systems requiring efficient OR’ing of multiple power sources.
- Applications involving Li-Ion cells in series.
Q & A
- What is the primary function of the LTC4412?
The LTC4412 controls an external P-channel MOSFET to create a near ideal diode function for power switchover or load sharing.
- What is the operating voltage range of the LTC4412?
The LTC4412 operates over a voltage range of 2.5V to 28V.
- What is the typical quiescent current of the LTC4412?
The typical quiescent current is 11µA.
- How does the LTC4412 handle load sharing between multiple batteries?
The LTC4412 can be used to share loads between multiple batteries or to charge multiple batteries from a single charger.
- What happens when an auxiliary power source is connected to the system?
The load is automatically disconnected from the battery when an auxiliary power source is connected.
- Is the LTC4412 compliant with RoHS standards?
Yes, the LTC4412 is compliant with RoHS standards.
- What is the temperature range for the LTC4412ES6#TRMPBF?
The temperature range is –40°C to 85°C.
- What is the package type of the LTC4412ES6#TRMPBF?
The package type is 6-Lead Plastic TSOT-23.
- How does the LTC4412 protect the MOSFET?
The LTC4412 includes an internal voltage clamp for MOSFET protection.
- What is the turn-on and turn-off time for the LTC4412?
The turn-on time (tS(ON)) is 4.5µs to 25µs, and the turn-off time (tS(OFF)) is 40µs to 75µs.
