3V to 5V regulating charge pump for SIM cards. The MAX1686HEUA is a high-efficiency, step-down DC-DC converter manufactured by Maxim Integrated. Below are the specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Part Number:** MAX1686HEUA
- **Package:** 8-pin µMAX
- **Input Voltage Range:** 4.5V to 28V
- **Output Voltage Range:** Adjustable from 1.25V to 26V
- **Output Current:** Up to 1A
- **Switching Frequency:** 100kHz to 300kHz (adjustable)
- **Efficiency:** Up to 95%
- **Operating Temperature Range:** -40°C to +85°C
- **Duty Cycle:** Up to 100%
- **Quiescent Current:** 1.5mA (typical)
### **Descriptions:**
The MAX1686HEUA is a step-down (buck) DC-DC converter designed for high-efficiency power conversion in applications requiring a wide input voltage range. It integrates a power MOSFET and provides a compact solution for generating a regulated output voltage from a higher input voltage. The device is suitable for battery-powered systems, industrial controls, and automotive applications.
### **Features:**
- **Wide Input Voltage Range (4.5V to 28V)** – Supports various power sources.
- **Adjustable Output Voltage (1.25V to 26V)** – Configurable via external resistors.
- **High Efficiency (Up to 95%)** – Reduces power dissipation.
- **Adjustable Switching Frequency (100kHz to 300kHz)** – Allows optimization for efficiency or component size.
- **Internal Power MOSFET** – Simplifies design and reduces external component count.
- **Low Quiescent Current (1.5mA)** – Enhances battery life in portable applications.
- **Thermal Shutdown Protection** – Prevents damage from overheating.
- **Short-Circuit Protection** – Improves system reliability.
- **100% Duty Cycle Operation** – Supports low dropout conditions.
This information is strictly based on the manufacturer's datasheet and technical documentation.
