LT3507AEFE

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency - Low quiescent current - Wide input voltage range - Adjustable output voltage - Small package size

Package: 16-Lead TSSOP

Essence: The LT3507AEFE is a power management IC designed for various applications that require efficient power conversion and regulation.

Packaging/Quantity: The LT3507AEFE is available in a 16-Lead Thin Shrink Small Outline Package (TSSOP). It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.5V to 45V
• Output Voltage Range: 1.24V to 40V
• Quiescent Current: 50µA
• Switching Frequency: 1MHz
• Maximum Duty Cycle: 90%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3507AEFE has the following pin configuration:

1. VIN: Input voltage pin
2. SW: Switching node connection
3. GND: Ground reference
4. FB: Feedback pin for output voltage regulation
5. VOUT: Output voltage pin
6. SS: Soft-start capacitor connection
7. RT: Timing resistor connection for switching frequency control
8. SYNC: Synchronization input pin for external clock synchronization
9. EN: Enable pin for turning the device on/off
10. PGND: Power ground reference
11. BST: Boost capacitor connection
12. LX: Inductor connection
13. COMP: Compensation pin for loop stability
14. VCC: Supply voltage pin
15. AGND: Analog ground reference
16. NC: No connect pin

Functional Features

• High efficiency synchronous step-up DC/DC converter
• Adjustable output voltage through feedback pin
• Low quiescent current for improved power efficiency
• Wide input voltage range allows for versatile applications
• Internal compensation for simplified design
• Soft-start feature for controlled startup
• Synchronization capability with external clock source
• Enable pin for device on/off control

Advantages and Disadvantages

Advantages: - High efficiency operation - Wide input voltage range - Adjustable output voltage - Small package size - Internal compensation simplifies design

Disadvantages: - Limited maximum duty cycle (90%) - Requires external synchronization for higher frequency operation

Working Principles

The LT3507AEFE is a synchronous step-up DC/DC converter. It utilizes a high-efficiency switching regulator to convert a lower input voltage to a higher output voltage. The device operates by controlling the duty cycle of the internal switches to regulate the output voltage according to the feedback signal.

During operation, the input voltage is applied to the VIN pin, and the desired output voltage is set using the feedback pin (FB). The LT3507AEFE then adjusts the duty cycle of its internal switches to maintain the output voltage at the desired level. The device also incorporates various protection features such as overcurrent and thermal shutdown to ensure safe operation.

Detailed Application Field Plans

The LT3507AEFE is suitable for a wide range of applications that require efficient power conversion and regulation. Some potential application fields include:

1. Battery-powered devices: The LT3507AEFE can be used in portable electronic devices such as smartphones, tablets, and wearable devices to efficiently boost the battery voltage to power various components.

2. Industrial equipment: The IC can be employed in industrial equipment that requires stable and regulated power supplies, such as sensors, actuators, and control systems.

3. Automotive electronics: The LT3507AEFE can be utilized in automotive applications to provide regulated power for various systems, including infotainment systems, lighting, and sensors.

4. Renewable energy systems: The device can be integrated into renewable energy systems, such as solar panels or wind turbines, to efficiently convert and regulate the generated power.

Detailed and Complete Alternative Models

1. LT3507A: Similar to LT3507AEFE, but available in a different package (e.g., 16-Lead MSOP).
2. LT3508: Step-up DC/DC converter with higher maximum duty cycle and adjustable switching frequency.
3. LT3510: Synchronous step-up DC/DC converter with integrated power switches and higher output current capability.

These alternative models offer similar functionality and can be considered based on specific requirements and preferences.

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