LTC3350IUHF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Quiescent Current, Wide Input Voltage Range
• Package: QFN-32
• Essence: LTC3350IUHF is a power management IC designed for various applications requiring high efficiency and low quiescent current. It offers a wide input voltage range and comes in a compact QFN-32 package.
• Packaging/Quantity: Available in tape and reel packaging with 250 units per reel.

Specifications

• Input Voltage Range: 2.7V to 20V
• Output Voltage Range: 0.8V to 5.5V
• Quiescent Current: 1.5µA
• Switching Frequency: Adjustable up to 3MHz
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LTC3350IUHF features a detailed pin configuration as follows:

1. VIN: Input Voltage
2. GND: Ground
3. VOUT: Output Voltage
4. EN: Enable Pin
5. PG: Power Good Indicator
6. FB: Feedback Pin
7. SS: Soft-Start Pin
8. SYNC: Synchronization Pin
9. BST: Boost Pin
10. SW: Switch Pin
11. AGND: Analog Ground
12. PGND: Power Ground
13. VCC: Supply Voltage
14. VREF: Reference Voltage
15. CLKOUT: Clock Output
16. CLKIN: Clock Input
17. MODE: Mode Selection Pin
18. PGOOD: Power Good Output
19. OVLO: Overvoltage Lockout
20. UVLO: Undervoltage Lockout
21. SS/TRK: Soft-Start/Tracking Pin
22. VCC2: Secondary Supply Voltage
23. VOUT2: Secondary Output Voltage
24. FB2: Secondary Feedback Pin
25. SYNC2: Secondary Synchronization Pin
26. CLKOUT2: Secondary Clock Output
27. CLKIN2: Secondary Clock Input
28. MODE2: Secondary Mode Selection Pin
29. PGOOD2: Secondary Power Good Output
30. OVLO2: Secondary Overvoltage Lockout
31. UVLO2: Secondary Undervoltage Lockout
32. SS/TRK2: Secondary Soft-Start/Tracking Pin

Functional Features

• High efficiency power conversion
• Low quiescent current for improved battery life
• Wide input voltage range allows for versatile applications
• Adjustable switching frequency for optimization
• Enable pin for easy control of the device
• Power good indicator for monitoring output status
• Soft-start feature for controlled startup
• Synchronization capability for multi-device operation

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption
• Low quiescent current prolongs battery life
• Wide input voltage range enables compatibility with various power sources
• Compact package size saves board space
• Adjustable switching frequency allows for optimization based on application requirements

Disadvantages

• Limited output voltage range (0.8V to 5.5V)
• Requires external components for complete power management solution

Working Principles

The LTC3350IUHF operates as a high-efficiency synchronous buck-boost converter. It utilizes a combination of inductors, capacitors, and switches to convert the input voltage to the desired output voltage. The integrated control circuitry ensures efficient power transfer while maintaining low quiescent current.

Detailed Application Field Plans

The LTC3350IUHF is suitable for a wide range of applications, including but not limited to:

1. Portable electronic devices
2. Battery-powered systems
3. Industrial equipment
4. Automotive electronics
5. IoT devices

Detailed and Complete Alternative Models

• LTC3112: Buck-Boost Converter with PowerPath Control
• LT8490: High Voltage Synchronous Buck-Boost Battery Charger
• LTC3789: High Efficiency Synchronous Buck-Boost Controller

These alternative models offer similar functionality and can be considered as alternatives to the LTC3350IUHF based on specific application requirements.

In conclusion, the LTC3350IUHF is a versatile power management IC that offers high efficiency, low quiescent current, and a wide input voltage range. Its compact package and functional features make it suitable for various applications. While it has some limitations, there are alternative models available to meet specific needs.