Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters The MAX8640YEXT19+T is a step-down DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Part Number:** MAX8640YEXT19+T
- **Type:** Step-Down DC-DC Converter
- **Input Voltage Range:** 2.5V to 5.5V
- **Output Voltage Range:** Adjustable (0.6V to VIN)
- **Output Current:** Up to 600mA
- **Switching Frequency:** 1MHz (typical)
- **Efficiency:** Up to 95%
- **Package:** 6-Pin TDFN (1.5mm x 1.0mm)
- **Operating Temperature Range:** -40°C to +85°C
- **Features:** Synchronous rectification, low dropout operation, soft-start, thermal shutdown
### **Descriptions:**
The MAX8640YEXT19+T is a high-efficiency, step-down DC-DC converter designed for portable applications. It integrates synchronous rectification to minimize power loss and supports a wide input voltage range, making it suitable for battery-powered devices. The device operates at a fixed 1MHz switching frequency, allowing the use of small external components.
### **Features:**
- **High Efficiency (up to 95%)** – Reduces power dissipation.
- **Low Dropout Operation** – Maintains regulation even when the input voltage approaches the output voltage.
- **1MHz Switching Frequency** – Enables compact external components.
- **Synchronous Rectification** – Improves efficiency by eliminating diode losses.
- **Adjustable Output Voltage (0.6V to VIN)** – Provides flexibility for different applications.
- **Soft-Start Function** – Limits inrush current during startup.
- **Thermal Shutdown Protection** – Prevents damage from overheating.
- **Tiny 6-Pin TDFN Package (1.5mm x 1.0mm)** – Saves board space in portable devices.
This information is based solely on the manufacturer's datasheet and technical documentation.
