LT1121AHVIS8#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High voltage, low dropout linear regulator
• Package: 8-Lead SOIC (Small Outline Integrated Circuit)
• Essence: Provides a regulated output voltage from an unregulated input voltage source
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 18V
• Output Voltage Range: 1.25V to 16V
• Dropout Voltage: 300mV at 800mA load current
• Output Current: Up to 800mA
• Quiescent Current: 75µA
• Line Regulation: 0.02%/V
• Load Regulation: 0.04%/mA
• Ripple Rejection: 70dB
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT1121AHVIS8#TRPBF has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. ADJ: Output Voltage Adjustment
4. VOUT: Regulated Output Voltage
5. NC: No Connection
6. NC: No Connection
7. NC: No Connection
8. NC: No Connection

Functional Features

• High voltage capability allows for use in various applications
• Low dropout voltage ensures efficient regulation even with small voltage differences
• Excellent line and load regulation for stable output voltage
• Low quiescent current minimizes power consumption
• Wide operating temperature range for versatility

Advantages

• High voltage range enables compatibility with different power sources
• Low dropout voltage ensures efficient power conversion
• Excellent line and load regulation for stable output voltage
• Low quiescent current reduces power consumption and extends battery life
• Wide operating temperature range allows for use in extreme environments

Disadvantages

• Limited output current compared to some other voltage regulators
• Higher cost compared to basic linear regulators
• Requires external components for proper operation

Working Principles

The LT1121AHVIS8#TRPBF is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage, adjusting the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The LT1121AHVIS8#TRPBF can be used in various applications, including:

1. Battery-powered devices: Provides regulated voltage for microcontrollers, sensors, and other low-power components.
2. Automotive electronics: Ensures stable voltage supply for automotive systems, such as infotainment systems and engine control units.
3. Industrial equipment: Regulates voltage for control systems, motor drivers, and instrumentation devices.
4. Communication systems: Maintains a steady voltage for RF modules, transceivers, and wireless communication devices.

Detailed and Complete Alternative Models

1. LT1120AHV: Similar specifications but in a different package (TO-220)
2. LT1122AHV: Higher output current capability (up to 1A) with similar characteristics
3. LT1115AHV: Lower dropout voltage (200mV at 800mA load current) with comparable features

These alternative models provide options based on specific requirements and preferences.

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