Dual Input USB/AC Adapter Li-Ion Battery Charger with 600mA Buck Converter The LTC3550EDHC#PBF is a highly integrated power management IC (PMIC) manufactured by 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:** LTC3550EDHC#PBF
- **Package:** 16-Lead DFN (5mm x 3mm)
- **Input Voltage Range:** 4.35V to 5.5V (USB-compatible)
- **Output Voltages:**
- **Buck Regulator 1:** Adjustable (0.6V to 3.3V)
- **Buck Regulator 2:** Adjustable (0.6V to 3.3V)
- **LDO Regulator:** Fixed 3.3V or Adjustable (1.5V to 3.3V)
- **Battery Charger:**
- **Charging Current:** Programmable up to 500mA
- **Battery Voltage:** 4.2V (Li-Ion/Polymer)
- **Charge Termination:** C/10
- **Efficiency:** Up to 95% (buck regulators)
- **Switching Frequency:** 2.25MHz (typical)
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
The LTC3550EDHC#PBF is a compact, high-efficiency power management IC designed for portable USB-powered applications. It integrates two synchronous buck regulators, a linear regulator (LDO), and a Li-Ion/Polymer battery charger. The device is optimized for space-constrained designs, offering high performance with minimal external components.
### **Features:**
- **Dual Synchronous Buck Regulators:** High efficiency (up to 95%) with adjustable output voltages.
- **Integrated Li-Ion Battery Charger:** Supports USB-compatible input (500mA max).
- **Low Dropout (LDO) Regulator:** Fixed 3.3V or adjustable output (1.5V to 3.3V).
- **Automatic Power Path Management:** Seamless transition between battery and external power.
- **I²C Control Interface:** For dynamic voltage scaling and charger configuration.
- **Thermal Protection & Overcurrent Protection:** Ensures safe operation.
- **Low Quiescent Current:** Extends battery life in portable applications.
- **Compact DFN Package:** 16-lead (5mm x 3mm) for space-saving designs.
This information is strictly based on the manufacturer's datasheet and technical documentation.
