Overview
The LT8302ES8E#PBF from Analog Devices Inc. is a monolithic micropower isolated flyback converter. This device integrates high voltage circuitry and control logic into a thermally enhanced 8-lead SO package. It operates from an input voltage range of 3V to 42V and delivers up to 18W of isolated output power. The LT8302ES8E#PBF is designed for simplicity and high efficiency, making it an ideal solution for isolated power delivery in various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3 to 42 | V |
| Output Power | Up to 18 | W |
| Internal DMOS Power Switch | 3.6A, 65V | A, V |
| Quiescent Current (Sleep Mode) | 106µA | A |
| Quiescent Current (Active Mode) | 380µA | A |
| Minimum Switching Frequency | 11.3 to 12.7 kHz | kHz |
| Minimum Switch-On Time | 160 ns | ns |
| Maximum Switch-Off Time | 170 µs | µs |
| Maximum Switch Current Limit | 3.6 to 5.4 A | A |
| Switch On-Resistance | 80 mΩ | mΩ |
| Operating Junction Temperature Range | -40°C to 125°C | °C |
Key Features
- No third winding or opto-isolator required for output voltage regulation
- Quasi-Resonant Boundary Mode Operation at heavy load and Low Ripple Burst Mode Operation at light load
- Accurate EN/UVLO threshold and hysteresis
- Internal compensation and soft-start
- Temperature compensation for output diode
- Output short-circuit protection
- Thermally enhanced 8-lead SO package
- AEC-Q100 qualified for automotive applications
Applications
- Isolated automotive, industrial, and medical power supplies
- Isolated auxiliary/housekeeping power supplies
Q & A
- What is the input voltage range of the LT8302ES8E#PBF?
The input voltage range is 3V to 42V.
- How much isolated output power can the LT8302ES8E#PBF deliver?
It can deliver up to 18W of isolated output power.
- What is the quiescent current in sleep mode and active mode?
The quiescent current is 106µA in sleep mode and 380µA in active mode.
- Does the LT8302ES8E#PBF require a third winding or opto-isolator for output voltage regulation?
No, it does not require a third winding or opto-isolator for output voltage regulation.
- What are the operating modes of the LT8302ES8E#PBF?
It operates in Quasi-Resonant Boundary Mode at heavy load and Low Ripple Burst Mode at light load.
- Is the LT8302ES8E#PBF qualified for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications.
- What is the maximum switch current limit of the LT8302ES8E#PBF?
The maximum switch current limit is 3.6 to 5.4 A.
- What is the switch on-resistance of the LT8302ES8E#PBF?
The switch on-resistance is 80 mΩ.
- What are the key protection features of the LT8302ES8E#PBF?
It includes output short-circuit protection and accurate EN/UVLO threshold and hysteresis.
- What is the operating junction temperature range of the LT8302ES8E#PBF?
The operating junction temperature range is -40°C to 125°C.
