LM20242MHX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Quiescent Current, Wide Input Voltage Range
• Package: 20-Pin HTSSOP
• Essence: Voltage Mode Synchronous Buck Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 65V
• Output Voltage Range: 0.8V to 60V
• Switching Frequency: 100kHz to 2MHz
• Quiescent Current: 40µA
• Maximum Duty Cycle: 100%
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

1. VIN: Input Voltage
2. PGND: Power Ground
3. SW: Switch Node
4. BOOT: Bootstrap Capacitor Connection
5. VCC: Supply Voltage for Internal Circuitry
6. SS/TRK: Soft-Start/Tracking Control
7. FB: Feedback Voltage Input
8. COMP: Compensation Node
9. EN: Enable Pin
10. SYNC: External Clock Synchronization
11. AGND: Analog Ground
12. PG: Power Good Indicator Output
13. SS/TRK: Soft-Start/Tracking Control
14. VSENSE: Current Sense Input
15. ISET: Output Current Limit Setting
16. BSTMON: Bootstrap Voltage Monitor
17. VOUT: Output Voltage
18. PGND: Power Ground
19. SW: Switch Node
20. VIN: Input Voltage

Functional Features

• High efficiency power conversion
• Wide input voltage range allows versatile applications
• Low quiescent current minimizes power consumption
• Adjustable output voltage for flexibility
• Soft-start and tracking control for smooth operation
• Power good indicator for system monitoring
• External clock synchronization for precise timing

Advantages and Disadvantages

Advantages

• High efficiency leads to energy savings
• Wide input voltage range accommodates various power sources
• Low quiescent current prolongs battery life
• Adjustable output voltage suits different requirements
• Soft-start and tracking control prevent voltage spikes
• Power good indicator enhances system reliability
• External clock synchronization enables precise timing

Disadvantages

• Requires additional external components for operation
• Limited maximum duty cycle may restrict certain applications
• Higher cost compared to non-synchronous buck regulators

Working Principles

The LM20242MHX/NOPB is a voltage mode synchronous buck regulator. It operates by converting a higher input voltage to a lower output voltage efficiently. The integrated circuit uses pulse width modulation (PWM) to control the switching of the power MOSFETs, regulating the output voltage based on the feedback received from the FB pin. The COMP pin allows compensation for stability and loop response. The EN pin enables or disables the regulator, while the SYNC pin synchronizes the switching frequency with an external clock if desired.

Detailed Application Field Plans

The LM20242MHX/NOPB is suitable for a wide range of applications, including but not limited to:

1. Industrial automation systems
2. Telecommunications equipment
3. Automotive electronics
4. Power supplies for consumer electronics
5. Renewable energy systems
6. LED lighting
7. Battery charging circuits
8. Motor control systems

Detailed and Complete Alternative Models

1. LM20243MHX/NOPB
2. LM20244MHX/NOPB
3. LM20245MHX/NOPB
4. LM20246MHX/NOPB
5. LM20247MHX/NOPB

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

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