LM5117PMH/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LM5117PMH/NOPB is a high-performance synchronous buck controller designed for use in various power management applications. It provides efficient and reliable voltage regulation with adjustable output voltage and current limits.

Characteristics: - High efficiency - Adjustable output voltage and current limits - Synchronous rectification - Wide input voltage range - Overcurrent protection - Thermal shutdown protection

Package: The LM5117PMH/NOPB is available in a small outline package (SOP) with exposed thermal pad for enhanced heat dissipation.

Essence: The essence of the LM5117PMH/NOPB lies in its ability to efficiently regulate voltage and current in power management applications, ensuring stable and reliable operation.

Packaging/Quantity: The LM5117PMH/NOPB is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 75V
• Output Voltage Range: 0.8V to 60V
• Maximum Switching Frequency: 1 MHz
• Operating Temperature Range: -40°C to 125°C
• Quiescent Current: 2.5 mA

Pin Configuration

The LM5117PMH/NOPB features a 16-pin package with the following pin configuration:

1. VIN: Input voltage
2. BOOT: Bootstrap capacitor connection
3. PH: Power high-side MOSFET gate drive
4. LX: Inductor connection
5. PGND: Power ground
6. COMP: Compensation node for feedback control
7. FB: Feedback voltage input
8. SS/TR: Soft-start/tracking input
9. EN: Enable input
10. VCC: Controller supply voltage
11. PG: Power good output
12. AGND: Analog ground
13. RT/CLK: Oscillator frequency control
14. SYNC: Synchronization input
15. SS/TR: Soft-start/tracking output
16. SW: Switching node

Functional Features

• Adjustable output voltage and current limits allow for flexible power management.
• Synchronous rectification improves efficiency by reducing power losses.
• Wide input voltage range enables compatibility with various power sources.
• Overcurrent protection safeguards against excessive current flow.
• Thermal shutdown protection prevents overheating and damage to the device.

Advantages and Disadvantages

Advantages: - High efficiency operation - Flexible output voltage and current adjustment - Comprehensive protection features - Compact package size

Disadvantages: - Limited maximum switching frequency - Relatively high quiescent current

Working Principles

The LM5117PMH/NOPB operates as a synchronous buck controller, regulating the output voltage by controlling the duty cycle of the high-side and low-side MOSFETs. It utilizes a feedback loop to adjust the duty cycle based on the difference between the desired output voltage and the actual output voltage. This control mechanism ensures stable and accurate voltage regulation.

Detailed Application Field Plans

The LM5117PMH/NOPB is suitable for a wide range of power management applications, including but not limited to: - DC-DC converters - Voltage regulators - Battery charging systems - LED lighting drivers - Industrial automation equipment - Telecommunications infrastructure

Alternative Models

For those seeking alternative options, the following models can be considered: - LM5118PMH/NOPB - LM5119PMH/NOPB - LM5120PMH/NOPB - LM5121PMH/NOPB

These models offer similar functionality and characteristics, providing alternatives for specific application requirements.

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