Overview
The LTC4365IDDB#TRMPBF, produced by Analog Devices Inc., is a versatile power supply protection controller designed to safeguard applications against a wide range of input voltage anomalies. This device protects against overvoltage, undervoltage, and reverse supply conditions, making it ideal for use in various power management scenarios. The LTC4365 controls the gate voltages of external N-channel MOSFETs to ensure that the output voltage remains within a safe operating range, even in the presence of transient or sustained voltage faults.
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 |
| SHDN Input Threshold (Falling) | 0.4 | 0.75 | 1.2 | V |
| UV, OV Fault Propagation Delay | 1 | - | 2 | µs |
| Operating Temperature Range | 0 | - | 70 | °C |
| Package Type | - | - | 8-Lead (3mm × 2mm) Plastic DFN | - |
Key Features
- Wide operating voltage range: 2.5V to 34V, with protection up to 60V and reverse protection to –40V.
- No input capacitor or TVS required for most applications.
- Adjustable undervoltage and overvoltage protection range.
- Charge pump enhances external N-channel MOSFET.
- Low operating current: 125µA, and low shutdown current: 10µA.
- Compact 8-lead, 3mm × 2mm DFN and TSOT-23 packages available.
- Blocks 50Hz and 60Hz AC power (LTC4365), and fast (1ms) recovery from fault (LTC4365-1).
Applications
- Automotive systems: The LTC4365 is suitable for 12V automotive applications, providing robust protection against voltage transients and faults.
- Industrial power systems: It can be used in various industrial power supply applications where voltage stability and protection are critical.
- Power distribution systems: Ideal for use in power distribution units (PDUs) and other power management systems.
- Telecommunications and data centers: Provides reliable protection against voltage anomalies in telecom and data center power supplies.
Q & A
- What is the primary function of the LTC4365?
The LTC4365 is a power supply protection controller that safeguards applications against overvoltage, undervoltage, and reverse supply conditions.
- What is the operating voltage range of the LTC4365?
The operating voltage range is from 2.5V to 34V, with protection up to 60V and reverse protection to –40V.
- Does the LTC4365 require an input capacitor or TVS for most applications?
No, the LTC4365 does not require an input capacitor or TVS for most applications.
- What is the typical operating current of the LTC4365?
The typical operating current is 125µA.
- What are the available package types for the LTC4365?
The LTC4365 is available in 8-lead, 3mm × 2mm DFN and TSOT-23 packages.
- Is the LTC4365 suitable for automotive applications?
- How does the LTC4365 handle AC power?
The LTC4365 blocks 50Hz and 60Hz AC power, and the LTC4365-1 version offers fast (1ms) recovery from fault conditions.
- What is the shutdown current of the LTC4365?
The shutdown current is typically 10µA.
- Can the undervoltage and overvoltage protection ranges be adjusted?
- What is the operating temperature range of the LTC4365?
The operating temperature range is from 0°C to 70°C, with some versions extending to –40°C to 125°C.
