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LD2981ABM33TR from ST,ST Microelectronics

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LD2981ABM33TR

Manufacturer: ST

VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT LOW ESR OUTPUT CAPACITORS COMPATIBLE

Partnumber Manufacturer Quantity Availability
LD2981ABM33TR ST 6000 In Stock

Description and Introduction

VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT LOW ESR OUTPUT CAPACITORS COMPATIBLE The LD2981ABM33TR is a low-dropout (LDO) voltage regulator manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Maximum Input Voltage:** 16V  
- **Dropout Voltage:** 300mV (typical at 150mA load)  
- **Output Current:** 150mA  
- **Quiescent Current:** 1.1µA (typical in OFF mode), 30µA (typical in ON mode)  
- **Line Regulation:** 0.015%/V (typical)  
- **Load Regulation:** 0.3mV/mA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-23-5L  

### **Descriptions:**  
- The LD2981ABM33TR is a CMOS LDO regulator designed for battery-powered applications.  
- It provides a stable 3.3V output with very low quiescent current, making it suitable for power-sensitive devices.  
- It includes features like thermal shutdown and current limiting for protection.  

### **Features:**  
- **Ultra-Low Quiescent Current:** Extends battery life in portable applications.  
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.  
- **Enable Pin (EN):** Allows the device to be turned on/off, reducing power consumption when inactive.  
- **No External Components Required:** Stable operation without an output capacitor (but can be used with small ceramic capacitors for improved performance).  
- **Thermal Shutdown & Current Limit Protection:** Safeguards the device from overheating and overcurrent conditions.  

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

Partnumber Manufacturer Quantity Availability
LD2981ABM33TR SGS-THOMSON 30000 In Stock

Description and Introduction

VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT LOW ESR OUTPUT CAPACITORS COMPATIBLE The LD2981ABM33TR is a low-dropout (LDO) voltage regulator manufactured by SGS-THOMSON (now STMicroelectronics). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** 3.3V (fixed)  
- **Output Current:** Up to 150mA  
- **Dropout Voltage:** 300mV (typical) at 100mA load  
- **Input Voltage Range:** 2.5V to 16V  
- **Quiescent Current:** 30µA (typical)  
- **Low ESR Capacitor Compatible:** Stable with ceramic capacitors ≥ 1µF  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-23-5L  

### **Descriptions and Features:**
- **Low Dropout:** Ensures efficient regulation even with small input-output differentials.  
- **Low Quiescent Current:** Ideal for battery-powered applications.  
- **Thermal Protection:** Built-in thermal shutdown prevents damage from overheating.  
- **Short-Circuit Protection:** Safeguards the regulator in fault conditions.  
- **Low Noise:** Suitable for noise-sensitive applications.  
- **Fast Transient Response:** Maintains stable output under load variations.  
- **RoHS Compliant:** Meets environmental standards.  

This LDO is commonly used in portable electronics, IoT devices, and power management applications requiring stable voltage regulation.

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