LM34902ITM/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency voltage regulator - Low dropout voltage - Wide input voltage range - Adjustable output voltage - Overcurrent and thermal protection - Small package size

Package: Thin Shrink Small Outline Package (TSSOP)

Essence: The LM34902ITM/NOPB is a power management IC designed to regulate voltage efficiently with low dropout voltage. It offers a wide input voltage range and adjustable output voltage, making it suitable for various applications.

Packaging/Quantity: The LM34902ITM/NOPB is available in TSSOP packages. The quantity per package may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to VIN
• Dropout Voltage: 200mV (typical)
• Maximum Output Current: 1A
• Quiescent Current: 50µA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM34902ITM/NOPB has the following pin configuration:

1. EN (Enable): Enable pin for turning the regulator on/off.
2. FB (Feedback): Feedback pin for adjusting the output voltage.
3. GND (Ground): Ground reference for the IC.
4. VIN (Input Voltage): Input voltage supply pin.
5. VOUT (Output Voltage): Regulated output voltage pin.

Functional Features

• High Efficiency: The LM34902ITM/NOPB provides high efficiency voltage regulation, minimizing power loss.
• Adjustable Output Voltage: The output voltage can be adjusted within the specified range, allowing flexibility in different applications.
• Overcurrent and Thermal Protection: The IC incorporates protection features to prevent damage from overcurrent and excessive temperature.
• Wide Input Voltage Range: The LM34902ITM/NOPB can operate with a wide range of input voltages, making it suitable for various power sources.

Advantages and Disadvantages

Advantages: - High efficiency voltage regulation - Adjustable output voltage - Overcurrent and thermal protection - Wide input voltage range

Disadvantages: - Limited maximum output current (1A)

Working Principles

The LM34902ITM/NOPB is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the feedback voltage (FB pin) with a reference voltage, adjusting the pass transistor to maintain the desired output voltage. The enable pin (EN) controls the on/off state of the regulator.

Detailed Application Field Plans

The LM34902ITM/NOPB can be used in various applications, including but not limited to: - Battery-powered devices - Portable electronics - Industrial equipment - Automotive systems - Communication devices

Detailed and Complete Alternative Models

Some alternative models to the LM34902ITM/NOPB include: - LM317: Adjustable positive voltage regulator - LM1117: Low dropout voltage regulator - LT1086: Adjustable positive voltage regulator with high current capability - TPS7A47: Ultra-low noise, high PSRR voltage regulator

These alternative models offer similar functionalities and can be considered based on specific application requirements.

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