Overview
The LTC4365HDDB-1#TRMPBF, produced by Analog Devices Inc., is a highly versatile overvoltage, undervoltage, and reverse supply protection controller. This device is designed to protect applications from a wide range of input voltage anomalies, making it particularly suitable for automotive and industrial environments. It features adjustable undervoltage and overvoltage protection ranges, a charge pump to enhance external N-channel MOSFET performance, and low operating and shutdown currents. The LTC4365HDDB-1#TRMPBF is available in compact 8-lead packages, including TSOT-23, and supports a broad operating temperature range.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| VIN Input Voltage Range | 2.5 | - | 34 | V |
| Protection Range | -40 | - | 60 | V |
| Input Supply Current (SHDN = 0V, VIN = VOUT) | 10 | 125 | 150 | µA |
| Shutdown Current | 10 | - | 25 | µA |
| Turn-On Delay (LTC4365-1) | 1 | - | - | ms |
| Operating Temperature Range | -40 | - | 125 | °C |
| Package Type | - | - | TSOT-23 | - |
Key Features
- Adjustable undervoltage and overvoltage protection ranges using an external resistive divider.
- No input capacitor or TVS required for most applications.
- Charge pump enhances external N-channel MOSFET performance.
- Low operating current: 125µA and low shutdown current: 10µA.
- Compact 8-lead, 3mm × 2mm DFN and TSOT-23 packages.
- Blocks 50Hz and 60Hz AC power; fast (1ms) recovery from fault for the LTC4365-1 version.
- Shutdown pin for external control and low current shutdown state.
- Fault output provides status of the gate pin pulling low.
Applications
- Automotive systems: The device is particularly suited for 12V automotive applications due to its wide operating voltage range and robust protection features.
- Industrial power systems: Protects against overvoltage, undervoltage, and reverse supply conditions in industrial environments.
- Power supply systems: Ensures reliable operation by blocking AC power and providing adjustable protection thresholds.
Q & A
- What is the primary function of the LTC4365HDDB-1#TRMPBF?
The primary function is to protect applications from overvoltage, undervoltage, and reverse supply conditions.
- What is the input voltage range of the LTC4365HDDB-1#TRMPBF?
The input voltage range is from 2.5V to 34V, with protection up to 60V and reverse protection down to -40V.
- Does the LTC4365HDDB-1#TRMPBF require an input capacitor or TVS for most applications?
No, it does not require an input capacitor or TVS for most applications.
- What is the operating current of the LTC4365HDDB-1#TRMPBF?
The operating current is 125µA, and the shutdown current is 10µA.
- What package types are available for the LTC4365HDDB-1#TRMPBF?
It is available in 8-lead TSOT-23 packages.
- How does the LTC4365HDDB-1#TRMPBF handle AC power?
It blocks 50Hz and 60Hz AC power and has a fast (1ms) recovery from fault for the LTC4365-1 version.
- What is the purpose of the shutdown pin on the LTC4365HDDB-1#TRMPBF?
The shutdown pin provides external control for enabling and disabling the MOSFETs and placing the device in a low current shutdown state.
- How does the fault output function on the LTC4365HDDB-1#TRMPBF?
The fault output indicates when the part is in shutdown or the input voltage is outside the undervoltage and overvoltage set points.
- What are the typical applications for the LTC4365HDDB-1#TRMPBF?
It is typically used in automotive systems, industrial power systems, and other applications requiring robust voltage protection.
- What is the operating temperature range of the LTC4365HDDB-1#TRMPBF?
The operating temperature range is from -40°C to 125°C.
