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MAX1773AEUP

Manufacturer: MAXIM

Power Source Selector for Dual-Battery Systems

Partnumber Manufacturer Quantity Availability
MAX1773AEUP MAXIM 2432 In Stock

Description and Introduction

Power Source Selector for Dual-Battery Systems The MAX1773AEUP is a step-up DC-DC controller manufactured by Maxim Integrated. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage Range:** Adjustable from 2V to 5.5V  
- **Switching Frequency:** 500kHz  
- **Maximum Output Current:** Up to 1A (depending on external components)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 20-TSSOP (Exposed Pad)  
- **Efficiency:** Up to 95%  
- **Low Quiescent Current:** 20µA (typical)  

### **Description:**  
The MAX1773AEUP is a high-efficiency, step-up DC-DC controller designed for low-voltage applications. It is optimized for battery-powered systems, providing stable output voltage even with input voltages as low as 0.7V. The device integrates a synchronous rectifier driver to improve efficiency and reduce external component count.  

### **Features:**  
- **Wide Input Voltage Range:** Operates from 0.7V to 5.5V, suitable for single-cell or multi-cell battery applications.  
- **Adjustable Output Voltage:** Configurable from 2V to 5.5V via external resistors.  
- **Synchronous Rectification:** Improves efficiency by reducing power losses.  
- **Low Startup Voltage:** Can start with input voltages as low as 0.7V.  
- **Pulse-Width Modulation (PWM) Operation:** Ensures stable performance under varying loads.  
- **Power-Saving Mode:** Reduces quiescent current for improved battery life.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Overcurrent Protection:** Safeguards the device and load.  

The MAX1773AEUP is commonly used in portable electronics, energy harvesting, and low-voltage power supply applications.

Application Scenarios & Design Considerations

Power Source Selector for Dual-Battery Systems

Alternative Part Number

  • LTC4162IUFD --: Multicell battery charger/manager with similar power-path and charging control functions, suitable as a functional alternative in battery management designs.
  • BQ25798RQMR --: Buck-boost battery charger IC with integrated power path and system management, offering comparable charging and system power features.
  • ISL9241IRTZ --: Buck-boost battery charger with SMBus control and power-path management, a viable alternative for similar battery charging applications.
  • LTC4412ES6 --: Pin-compatible power-path/ideal-diode controller in a small SOT-23 package, functionally similar to the MAX1773 power-management function.
  • TPS2113APW --: Automatic power-path switch with similar dual-input arbitration, widely available and well documented.
  • BQ24074RGTR --: Integrated power-path and battery charger IC covering comparable system power-management roles.
  • TPS2113A --: Automatic power-path switch with adjustable current limit and similar supply-voltage range, suitable as a functional replacement for power-source selection.
  • BQ24074 --: Integrated power-path and battery-charge management IC covering comparable system power routing needs, though pinout and package differ so layout changes are required.

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