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MAX1556ETB from MAXIM,MAXIM - Dallas Semiconductor

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MAX1556ETB

Manufacturer: MAXIM

16 mA IQ, 1.2 A PWM step-down DC-DC converter

Partnumber Manufacturer Quantity Availability
MAX1556ETB MAXIM 227 In Stock

Description and Introduction

16 mA IQ, 1.2 A PWM step-down DC-DC converter The MAX1556ETB is a dual-input, linear battery charger designed for single-cell lithium-ion (Li+) batteries. It is manufactured by Maxim Integrated (now part of Analog Devices).  

### **Specifications:**  
- **Inputs:** Dual-input (USB and AC adapter) with automatic selection.  
- **Charging Current:** Programmable up to 500mA (USB) or 1A (AC adapter).  
- **Battery Voltage:** 4.2V ±0.75% regulation accuracy.  
- **Charge Termination:** Automatic (based on current threshold).  
- **Power Source Detection:** Auto-switching between USB and AC adapter.  
- **Thermal Regulation:** Reduces charge current if temperature exceeds safe limits.  
- **Package:** 10-pin TDFN (3mm x 3mm).  
- **Operating Temperature Range:** -40°C to +85°C.  

### **Descriptions:**  
The MAX1556ETB simplifies charging from either a USB port or an AC adapter without external MOSFETs, diodes, or blocking switches. It includes thermal regulation to prevent overheating and automatically terminates charging when the battery reaches full capacity.  

### **Features:**  
- Dual-input (USB/AC) with automatic source selection.  
- No external FETs or diodes required.  
- Programmable charge current (USB: 100mA/500mA, AC: up to 1A).  
- Thermal regulation for safety.  
- Charge status outputs (open-drain).  
- Under-voltage lockout (UVLO) protection.  
- Small 10-pin TDFN package.  

This information is based solely on the manufacturer's datasheet.

Application Scenarios & Design Considerations

16 mA IQ, 1.2 A PWM step-down DC-DC converter

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