Overview
The LTC4365HTS8#WTRPBF from Analog Devices Inc. is a specialized power management IC designed to provide comprehensive protection against overvoltage, undervoltage, and reverse supply conditions. This controller is particularly suited for applications where the input voltage may vary significantly, such as in automotive systems. It ensures the stability and reliability of the power supply by controlling the gate of an external N-channel MOSFET.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| VIN Input Voltage Range | Operating Range | 2.5 | - | 34 | V |
| VIN Input Voltage Range | Protection Range | -40 | - | 60 | V |
| Input Supply Current (IVIN) | SHDN = 0V, VIN = VOUT, -40°C to 85°C | 10 | 25 | 50 | µA |
| Shutdown Current (ISHDN) | SHDN = 0.75V, VIN = 34V | - | - | ±10 | nA |
| UV, OV Fault Propagation Delay (tFAULT) | Overdrive = 50mV, VIN = VOUT = 12V | 1 | 2 | - | µs |
| SHDN to FAULT Asserted (tSHDN(F)) | VIN = VOUT = 12V | 1.5 | 3 | - | µs |
| Operating Temperature Range | - | -40 | - | 125 | °C |
| Package | - | - | - | TSOT-23-8 | - |
Key Features
- Comprehensive Protection: Provides overvoltage, undervoltage, and reverse supply protection up to 60V and -40V respectively.
- Adjustable Protection Range: Allows for adjustable undervoltage and overvoltage protection thresholds.
- Low Operating Current: Operates with a low current of 125µA and a shutdown current of 10µA.
- Compact Package: Available in an 8-lead, 3mm × 2mm TSOT-23 package.
- No Input Capacitor or TVS Required: Most applications do not require an input capacitor or TVS for protection.
- Charge Pump Enhancement: Enhances the external N-channel MOSFET using a charge pump).
- Fast Recovery from Fault: The LTC4365-1 version offers fast (1ms) recovery from fault conditions).
Applications
- Automotive Systems: Ideal for automotive applications due to its wide operating voltage range and robust protection features.
- Industrial Power Supplies: Suitable for industrial power supplies that require reliable protection against voltage fluctuations).
- Battery-Powered Devices: Useful in battery-powered devices to protect against overcharge, undercharge, and reverse polarity conditions).
Q & A
- What is the primary function of the LTC4365HTS8#WTRPBF?
The primary function is to provide overvoltage, undervoltage, and reverse supply protection for power supply inputs).
- What is the operating voltage range of the LTC4365HTS8#WTRPBF?
The operating voltage range is from 2.5V to 34V, with protection up to 60V and -40V).
- What is the typical operating current of the LTC4365HTS8#WTRPBF?
The typical operating current is 125µA).
- Does the LTC4365HTS8#WTRPBF require an input capacitor or TVS for most applications?
No, most applications do not require an input capacitor or TVS for protection).
- What package options are available for the LTC4365HTS8#WTRPBF?
It is available in an 8-lead, 3mm × 2mm TSOT-23 package).
- What are the key protection features of the LTC4365HTS8#WTRPBF?
It provides overvoltage protection up to 60V, undervoltage protection, and reverse supply protection up to -40V).
- Is the LTC4365HTS8#WTRPBF suitable for automotive applications?
Yes, it is specifically designed for automotive applications and meets AEC-Q100 standards).
- How does the LTC4365HTS8#WTRPBF enhance the external N-channel MOSFET?
It enhances the external N-channel MOSFET using a charge pump).
- What is the difference between the LTC4365 and the LTC4365-1?
The LTC4365-1 version offers fast (1ms) recovery from fault conditions, whereas the standard LTC4365 does not).
- What is the operating temperature range of the LTC4365HTS8#WTRPBF?
The operating temperature range is from -40°C to 125°C).
