LM5088MHX-2/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High voltage buck controller - Wide input voltage range - Adjustable output voltage - Current mode control - Synchronous rectification - Programmable soft-start - Overvoltage protection - Overcurrent protection - Thermal shutdown protection

Package: 20-TSSOP (Thin Shrink Small Outline Package)

Essence: The LM5088MHX-2/NOPB is a high voltage buck controller IC designed for power management applications. It offers various features such as adjustable output voltage, current mode control, and overvoltage/overcurrent protection.

Packaging/Quantity: The LM5088MHX-2/NOPB is available in a 20-TSSOP package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 75V
• Output Voltage Range: 0.8V to VIN
• Switching Frequency: Up to 1MHz
• Maximum Duty Cycle: 90%
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 1.6mA

Pin Configuration

The LM5088MHX-2/NOPB has the following pin configuration:

1. VCC - Power supply voltage input
2. GND - Ground reference
3. FB - Feedback voltage input
4. COMP - Compensation node for loop stability
5. SS/TR - Soft-start/Tracking input
6. RT/CLK - Oscillator timing resistor/clock synchronization input
7. SYNC - External synchronization input
8. EN - Enable control input
9. PGND - Power ground reference
10. BOOT - High-side gate driver bootstrap supply
11. LX - Switching node connection to the power MOSFET
12. PGND - Power ground reference
13. VCC - Power supply voltage input
14. GATE - Gate drive output for the high-side MOSFET
15. PGND - Power ground reference
16. PGND - Power ground reference
17. PGND - Power ground reference
18. PGND - Power ground reference
19. PGND - Power ground reference
20. PGND - Power ground reference

Functional Features

• High efficiency power conversion
• Wide input voltage range allows for versatile applications
• Adjustable output voltage for flexibility
• Current mode control provides stability and fast transient response
• Synchronous rectification improves efficiency
• Programmable soft-start prevents inrush current
• Overvoltage, overcurrent, and thermal shutdown protection ensure safe operation

Advantages and Disadvantages

Advantages: - High voltage capability - Wide input voltage range - Efficient power conversion - Comprehensive protection features - Flexible output voltage adjustment

Disadvantages: - Limited maximum duty cycle (90%) - Requires external components for complete circuit implementation

Working Principles

The LM5088MHX-2/NOPB operates as a buck controller, regulating the output voltage by controlling the duty cycle of the power switch. It utilizes current mode control to maintain stability and provide fast transient response. The synchronous rectification feature improves efficiency by reducing power losses. The IC also incorporates various protection mechanisms such as overvoltage, overcurrent, and thermal shutdown.

Detailed Application Field Plans

The LM5088MHX-2/NOPB is suitable for a wide range of power management applications, including but not limited to: - Industrial power supplies - Telecom infrastructure - Automotive electronics - LED lighting systems - Battery charging circuits - Distributed power architectures

Detailed and Complete Alternative Models

• LM5088MH/NOPB
• LM5088MHX/NOPB
• LM5088MHX-1/NOPB
• LM5088MHX-3/NOPB
• LM5088MHX-4/NOPB

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

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