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TPS51020DBTG4 from TI/BB,Texas Instruments

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TPS51020DBTG4

Manufacturer: TI/BB

DUAL, VOLTAGE MODE, DDR SELECTABLE, SYNCHRONOUS, STEP-DOWN CONTROLLER FOR NOTEBOOK SYSTEM POWER

Partnumber Manufacturer Quantity Availability
TPS51020DBTG4 TI/BB 12000 In Stock

Description and Introduction

DUAL, VOLTAGE MODE, DDR SELECTABLE, SYNCHRONOUS, STEP-DOWN CONTROLLER FOR NOTEBOOK SYSTEM POWER The TPS51020DBTG4 is a synchronous buck controller manufactured by Texas Instruments (TI). Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** Adjustable down to 0.76V  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Maximum Output Current:** Supports high current with external MOSFETs  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to 85°C  
- **Package:** 16-Pin TSSOP (DBT)  

### **Descriptions:**  
The TPS51020DBTG4 is a high-performance synchronous buck controller designed for DC-DC conversion in power supply applications. It provides precise voltage regulation and supports high-efficiency power conversion with external N-channel MOSFETs.  

### **Features:**  
- **Adjustable Output Voltage:** Via external resistor divider  
- **Programmable Soft-Start:** Reduces inrush current  
- **Synchronizable Switching Frequency:** Allows synchronization to an external clock  
- **Overcurrent Protection (OCP):** Prevents damage from excessive current  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage  
- **Thermal Shutdown:** Protects against overheating  
- **Power Good Indicator:** Monitors output voltage status  

This information is based on TI's official datasheet for the TPS51020DBTG4.

Application Scenarios & Design Considerations

DUAL, VOLTAGE MODE, DDR SELECTABLE, SYNCHRONOUS, STEP-DOWN CONTROLLER FOR NOTEBOOK SYSTEM POWER

Alternative Part Number

  • ISL6520ACBZ --: Single synchronous buck PWM controller with similar voltage-mode control and TSSOP/SOIC packaging, suitable as a functional substitute for a two-channel DDR/DC-DC controller in many designs.
  • LM26420XSQ --: Dual-channel step-down controller from a different TI series, offering comparable dual-rail regulation and similar input voltage range for board-level replacement.
  • RT8105GS --: Synchronous buck controller with similar PWM control architecture and compact package, usable as a lower-cost alternative where channel count and current requirements match.

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