1A, 1MHz Synchronous Step-Up DC/DC Converters in 3mm x 2mm DFN The LTC3528EDDB#PBF is a product from **Linear Technology** (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information:
### **Specifications:**
- **Manufacturer:** LINEAR (Linear Technology)
- **Part Number:** LTC3528EDDB#PBF
- **Package:** DFN-8 (3mm x 3mm)
- **Type:** Synchronous Buck-Boost DC/DC Converter
- **Input Voltage Range:** 1.8V to 5.5V
- **Output Voltage Range:** Adjustable (1.8V to 5.25V)
- **Output Current:** Up to 400mA
- **Switching Frequency:** 1.5MHz (typical)
- **Efficiency:** Up to 95%
- **Operating Temperature Range:** -40°C to +125°C
- **Features:** Automatic transition between buck and boost modes, low quiescent current (25µA), and shutdown mode (<1µA).
### **Descriptions:**
The LTC3528EDDB#PBF is a **synchronous buck-boost DC/DC converter** designed to provide a regulated output voltage from input sources that may be above, below, or equal to the output voltage. It is optimized for **battery-powered applications** where efficiency and compact size are critical.
### **Features:**
- **Seamless Buck-Boost Operation:** Automatically transitions between buck and boost modes.
- **High Efficiency:** Up to 95% efficiency with synchronous rectification.
- **Low Quiescent Current:** 25µA in operation, <1µA in shutdown.
- **Fixed Frequency Operation:** 1.5MHz switching frequency minimizes external component size.
- **Small Footprint:** DFN-8 (3mm x 3mm) package.
- **Wide Input Range:** 1.8V to 5.5V input supports single-cell Li-Ion, multiple alkaline/NiMH cells, and regulated 3.3V/5V inputs.
- **Adjustable Output Voltage:** Set via external resistors.
- **Thermal Protection & Current Limiting:** Built-in safeguards.
This information is strictly based on the manufacturer's datasheet. No additional suggestions or guidance are included.
