HV9921N3-G
Product Overview
Category
HV9921N3-G belongs to the category of integrated circuits (ICs).
Use
This IC is primarily used for driving high-power LEDs in various lighting applications.
Characteristics
- High efficiency and low power consumption
- Wide input voltage range
- Adjustable output current
- Over-temperature protection
- Short-circuit protection
Package
HV9921N3-G is available in a compact and industry-standard SOP-8 package.
Essence
The essence of HV9921N3-G lies in its ability to efficiently drive high-power LEDs, ensuring optimal performance and longevity.
Packaging/Quantity
This IC is typically packaged in reels containing 2500 units per reel.
Specifications
- Input Voltage Range: 9V to 30V
- Output Current Range: 100mA to 1.5A
- Operating Temperature Range: -40°C to 85°C
- Dimming Control: Analog/PWM
- Efficiency: Up to 95%
- Switching Frequency: 200kHz
Detailed Pin Configuration
- VIN: Input voltage
- GND: Ground
- CS: Current sense
- DIM: Dimming control input
- VCC: Power supply for internal circuitry
- FB: Feedback pin for regulating output current
- SW: Switching node
- VOUT: Output voltage
Functional Features
- Constant current output regulation
- Dimming control for brightness adjustment
- Over-temperature protection ensures safe operation
- Short-circuit protection prevents damage to the IC and LEDs
- Wide input voltage range allows for versatile applications
Advantages and Disadvantages
Advantages
- High efficiency leads to energy savings
- Adjustable output current enables flexibility in LED selection
- Compact SOP-8 package facilitates easy integration
- Over-temperature and short-circuit protection enhance reliability
Disadvantages
- Limited output current range may not be suitable for high-power LED applications exceeding 1.5A
- Requires external components for proper operation
Working Principles
HV9921N3-G operates on the principle of pulse width modulation (PWM) to regulate the output current. The IC senses the current flowing through the LEDs using the CS pin and adjusts the duty cycle of the PWM signal accordingly. This ensures a constant current flow through the LEDs, maintaining their brightness.
Detailed Application Field Plans
HV9921N3-G finds extensive application in various lighting systems, including: - LED bulbs - LED strips - Downlights - Streetlights - Automotive lighting
Detailed and Complete Alternative Models
- HV9910B: Similar functionality with a different pin configuration
- LT3754: Higher output current capability and additional features
- LM3409: Integrated boost converter for driving high-power LEDs
These alternative models offer similar functionalities to HV9921N3-G but may have varying specifications and pin configurations.
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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av HV9921N3-G i tekniska lösningar
Sure! Here are 10 common questions and answers related to the application of HV9921N3-G in technical solutions:
Q1: What is HV9921N3-G? A1: HV9921N3-G is a high-voltage LED driver IC that provides efficient power conversion for driving LEDs in various lighting applications.
Q2: What is the input voltage range supported by HV9921N3-G? A2: HV9921N3-G supports an input voltage range of 85V to 265V AC.
Q3: What is the maximum output current that HV9921N3-G can deliver? A3: HV9921N3-G can deliver a maximum output current of up to 1.5A.
Q4: Can HV9921N3-G be used for dimming LED lights? A4: Yes, HV9921N3-G supports analog dimming control, allowing for adjustable brightness levels of LED lights.
Q5: Is HV9921N3-G suitable for both indoor and outdoor lighting applications? A5: Yes, HV9921N3-G is designed to be suitable for both indoor and outdoor lighting applications.
Q6: Does HV9921N3-G have built-in protection features? A6: Yes, HV9921N3-G incorporates various protection features such as over-temperature protection, over-current protection, and short-circuit protection.
Q7: Can HV9921N3-G operate with a wide temperature range? A7: Yes, HV9921N3-G has a wide operating temperature range of -40°C to +105°C.
Q8: What type of LED configurations does HV9921N3-G support? A8: HV9921N3-G supports both series and parallel LED configurations.
Q9: Does HV9921N3-G require any external components for operation? A9: Yes, HV9921N3-G requires a few external components such as resistors, capacitors, and an inductor for proper operation.
Q10: Is HV9921N3-G compliant with industry standards and regulations? A10: Yes, HV9921N3-G is compliant with various industry standards and regulations, ensuring its reliability and safety in technical solutions.
Please note that the answers provided here are general and may vary depending on specific application requirements.