3.3V/5V or Adjustable-Output, Step-Up DC-DC Converters The MAX856ESA is a step-up DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** MAXIM (Maxim Integrated)
- **Part Number:** MAX856ESA
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)
- **Input Voltage Range:** 0.7V to 5.5V
- **Output Voltage:** Adjustable (up to 5.5V) or fixed (3.3V or 5V)
- **Output Current:** Up to 300mA (depending on input voltage)
- **Switching Frequency:** 500kHz
- **Efficiency:** Up to 94%
- **Operating Temperature Range:** -40°C to +85°C
- **Shutdown Current:** <1µA
### **Description:**
The MAX856ESA is a low-power, step-up DC-DC converter designed for battery-powered applications. It is optimized for small, portable devices requiring efficient power conversion from low input voltages (as low as 0.7V) to higher regulated output voltages (up to 5.5V). The device integrates a power switch, oscillator, and control circuitry, minimizing external component count.
### **Features:**
- **Low Input Voltage Operation:** Starts up with inputs as low as 0.7V.
- **Adjustable or Fixed Output Voltage:** Supports 3.3V or 5V fixed versions or an adjustable output via external resistors.
- **High Efficiency:** Up to 94% efficiency, extending battery life.
- **Low Shutdown Current:** Consumes less than 1µA in shutdown mode.
- **Internal Power Switch:** Reduces external component requirements.
- **500kHz Switching Frequency:** Allows for small external components.
- **Thermal Shutdown Protection:** Prevents damage from overheating.
- **Current Limiting:** Protects against output short circuits.
This information is based on the manufacturer's datasheet and technical documentation.
