2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters The **LTC3539EDCB-2#PBF** is a synchronous buck-boost DC/DC converter manufactured by **Linear Technology (now part of Analog Devices)**. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Input Voltage Range:** 1.8V to 5.5V
- **Output Voltage Range:** 1.8V to 5.25V (adjustable)
- **Output Current:** Up to **600mA** (depends on input/output conditions)
- **Switching Frequency:** **1.5MHz** (fixed)
- **Efficiency:** Up to **95%**
- **Operating Temperature Range:** **-40°C to +85°C**
- **Package:** **10-Lead DFN (3mm × 2mm)**
- **Topology:** Synchronous buck-boost
- **Quiescent Current:** **20µA** (typical in Burst Mode operation)
### **Descriptions:**
- The **LTC3539EDCB-2#PBF** is a high-efficiency, low-noise buck-boost converter designed for single-cell Li-Ion or multi-cell alkaline/NiMH applications.
- It provides a regulated output voltage from an input voltage that can be above, below, or equal to the output voltage.
- The device operates in **Burst Mode** for high efficiency at light loads, reducing quiescent current.
- It includes internal power switches and synchronous rectification for improved efficiency.
### **Features:**
- **Seamless Transition:** Automatically switches between buck and boost modes without output disturbance.
- **Low Noise Burst Mode Operation:** Improves efficiency at light loads.
- **Integrated Power Switches:** No external MOSFETs required.
- **Programmable Output Voltage:** Adjustable via external resistors.
- **Short-Circuit Protection:** Prevents damage during faults.
- **Thermal Shutdown:** Protects the device from overheating.
- **Small Footprint:** 10-lead DFN package (3mm × 2mm).
This converter is ideal for **battery-powered applications**, portable devices, and systems requiring stable power from variable input sources.
(Note: For detailed application circuits and further specifications, refer to the official datasheet.)
