Isolated Secondary Synchronous Rectifier Controller The LTC1698EGN is a dual hot swap controller manufactured by Linear Technology (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information:
### **Specifications:**
- **Manufacturer:** LINEAR (Linear Technology)
- **Part Number:** LTC1698EGN
- **Package:** 16-Lead SSOP
- **Operating Voltage Range:** 2.7V to 15V
- **Operating Temperature Range:** -40°C to 85°C
- **Quiescent Current:** 500µA (typical)
- **Gate Drive Voltage:** Adjustable (for external N-channel MOSFETs)
- **Fault Response Time:** Adjustable (via external capacitor)
- **Output Current Monitoring:** Yes (via sense resistor)
- **Overcurrent Protection:** Yes (programmable)
- **Undervoltage Lockout (UVLO):** Yes (adjustable)
### **Descriptions:**
The LTC1698EGN is a dual-channel hot swap controller designed to safely insert and remove circuit boards from live backplanes. It provides inrush current control, fault protection, and power management for two independent supply rails. Each channel controls an external N-channel MOSFET to regulate power-up sequencing and protect against short circuits or overcurrent conditions.
### **Features:**
- **Dual Independent Hot Swap Controllers** in a single package.
- **Programmable Current Limit** using an external sense resistor.
- **Adjustable Fault Timer** for overcurrent events.
- **Gate Drive for External MOSFETs** with controlled slew rate.
- **Undervoltage Lockout (UVLO)** prevents operation below a set threshold.
- **Wide Operating Voltage Range** (2.7V to 15V).
- **Low Quiescent Current** for power efficiency.
- **Fault Output Indicator** for each channel.
- **Thermal Shutdown Protection** for added safety.
This information is strictly based on the manufacturer's datasheet and specifications.
