LT3470AEDDB#TRMPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power management
• Characteristics: High efficiency, low quiescent current, small package size
• Package: DFN-8 (2mm x 3mm)
• Essence: Voltage step-down regulator
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 0.6V to VIN
• Output Current: Up to 500mA
• Switching Frequency: 1MHz
• Quiescent Current: 40µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3470AEDDB#TRMPBF has the following pin configuration:

1. VIN: Input voltage
2. SW: Switch node connection
3. GND: Ground reference
4. FB: Feedback voltage input
5. EN: Enable pin
6. SS: Soft-start capacitor connection
7. PG: Power good indicator
8. VOUT: Output voltage

Functional Features

• High efficiency synchronous rectification
• Low dropout voltage
• Adjustable output voltage
• Internal compensation
• Soft-start capability
• Power good indicator

Advantages

• High efficiency operation extends battery life
• Small package size saves board space
• Wide input voltage range allows for versatile applications
• Low quiescent current minimizes power consumption
• Adjustable output voltage provides flexibility

Disadvantages

• Limited output current may not be suitable for high-power applications
• Requires external components for proper operation
• Sensitive to input voltage fluctuations

Working Principles

The LT3470AEDDB#TRMPBF is a voltage step-down regulator that converts a higher input voltage to a lower output voltage. It utilizes synchronous rectification and internal compensation to achieve high efficiency operation. The device operates at a fixed switching frequency of 1MHz, allowing for the use of small external components.

The regulator features an adjustable output voltage, which can be set using an external resistor divider connected to the FB pin. Soft-start capability ensures a controlled startup, preventing excessive inrush current. The power good indicator (PG) provides a signal indicating when the output voltage is within regulation limits.

Detailed Application Field Plans

The LT3470AEDDB#TRMPBF is commonly used in various applications, including:

1. Battery-powered devices: Portable electronics, handheld instruments
2. Industrial equipment: Sensors, control systems
3. Automotive electronics: Infotainment systems, lighting controls
4. Communication systems: Wireless routers, base stations
5. Consumer electronics: Smartphones, tablets, digital cameras

Detailed and Complete Alternative Models

1. LT3470AEDD#PBF: Similar specifications, different package (8-lead DFN)
2. LT3470AEDC#TRMPBF: Lower quiescent current, similar specifications (40µA)
3. LT3470AEDDB#TRPBF: Higher output current capability (up to 1A)

These alternative models offer similar functionality and can be considered as substitutes for the LT3470AEDDB#TRMPBF depending on specific requirements.

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