LM5020MM-1
Switching Controllers 13-100V Wide Vin, Current Mode PWM Boost, Flyback, Sepic Controller 10-VSSOP -40 to 125LM5020MM-1
Switching Controllers 13-100V Wide Vin, Current Mode PWM Boost, Flyback, Sepic Controller 10-VSSOP -40 to 125
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製造商零件號 # : LM5020MM-1
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包裝/封裝: VSSOP-10
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製造商: Texas Instruments
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產品分類 : DC DC Switching Controllers
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LM5020MM-1 數據表
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詳細說明
Featuring adjustable switching frequency up to 2MHz, the LM5020MM-1 allows for precise control and optimization of power delivery. The inclusion of adjustable slope compensation and programmable current limit with a precision reference adds further flexibility to its functionalities. Its comprehensive protection features, such as input UVLO, cycle-by-cycle current limiting, and thermal shutdown, ensure safe and reliable operation in different conditions
主要特徵
- Internal Low-Dropout Regulator (LDO)
- Error Amplifier with Peak Detecting Function
- Pulse Position Modulation (PPM) Control
- Digital Softstart with Adjustable Ramp Time
規格
以下是所選零件的基本參數,涉及零件的特性及其所屬類別。
Topology | Boost, Flyback, Forward, SEPIC | Vin (min) (V) | 13 |
Vin (max) (V) | 100 | Vout (min) (V) | 1.25 |
Vout (max) (V) | 300 | Regulated outputs (#) | 1 |
Switching frequency (min) (kHz) | 100 | Switching frequency (max) (kHz) | 1000 |
Iq (typ) (mA) | 2 | Features | Enable, Frequency synchronization, Nonsynchronous rectification, Pre-Bias Start-Up |
Duty cycle (max) (%) | 80 | Rating | Catalog |
Operating temperature range (°C) | -40 to 125 | Type | Controller |
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等,這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is LM5020MM-1?
The LM5020MM-1 is a high voltage PWM controller designed by Texas Instruments. It is specifically designed for high efficiency isolated and non-isolated dc-dc converters. The device employs a current mode control architecture to provide ease of use, high performance, and numerous protection features.
How Does LM5020MM-1 Work?
The LM5020MM-1 operates by regulating the duty cycle of the power switch based on the error amplifier's output. It utilizes a current mode control architecture to ensure stable and efficient operation. The device features adjustable switching frequency, soft-start, and programmable line undervoltage lockout, making it suitable for a variety of power supply designs.
How Many Pins does LM5020MM-1 have and What are the Functions of the Pinout Configuration?
The LM5020MM-1 is housed in a 10-lead VSSOP (Very Small Outline Package) package. The pinout configuration includes:
- COMP: Compensation pin for error amplifier.
- SS/TR: Soft-start/tracking pin.
- EN/UVLO: Enable/undervoltage lockout pin.
- FB: Feedback pin for error amplifier.
- CSp: Current sense positive input pin.
- CSn: Current sense negative input pin.
- VCC: Voltage supply pin.
- RT/CLK: Timing resistor/clock synchronization pin.
- COMP1: Additional compensation pin for secondary side regulation (in LM5020-Q1 only).
- OUT: Gate driver output pin.
What are the Pros and Cons of LM5020MM-1?
Pros:
- High Voltage Operation: Designed for high voltage applications, suitable for a wide range of power supply designs.
- Current Mode Control: Provides stability and ease of use in regulating the power switch's duty cycle.
- Protection Features: Includes numerous protection features such as overcurrent protection and thermal shutdown for enhanced reliability.
- Adjustable Frequency: Offers flexibility with adjustable switching frequency and soft-start capability.
- Small Package: The VSSOP package is space-efficient, suitable for compact designs.
Cons:
- External Components: May require additional external components for compensation, current sensing, and voltage setting.
- Complexity: Current mode control designs may require careful consideration of loop stability and component selection.
- Application Specific: Primarily designed for power supply applications and may not be suitable for other analog circuit designs.
Are There Any Equivalents/Alternatives to LM5020MM-1 for Recommendation?
- The LM5022 from Texas Instruments is a similar high voltage PWM controller with additional features.
- Alternatives to the LM5020MM-1 include the UC3823 from Texas Instruments and the NCP1252 from ON Semiconductor.
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