HV9911NG-G

Product Overview

• Category: Integrated Circuit (IC)
• Use: LED Driver
• Characteristics: High efficiency, constant current control, wide input voltage range
• Package: DIP-8 (Dual In-line Package with 8 pins)
• Essence: Power management IC for driving LEDs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Current Range: Up to 1A
• Switching Frequency: 200kHz to 1MHz
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The HV9911NG-G has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. CS: Current sense input
4. DIM: Dimming control input
5. VCC: Supply voltage for internal circuitry
6. FB: Feedback pin for output regulation
7. SW: Switch node connection
8. VOUT: Output voltage

Functional Features

• High efficiency conversion of input voltage to constant current output for driving LEDs
• Wide input voltage range allows operation in various applications
• Analog or PWM dimming control for adjusting LED brightness
• Internal over-temperature protection ensures safe operation
• Soft-start feature prevents excessive inrush current during startup

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption - Constant current control ensures consistent LED brightness - Wide input voltage range allows compatibility with different power sources - Dimming control provides flexibility in lighting applications

Disadvantages: - Limited maximum output current of 1A may not be suitable for high-power LED applications - DIP-8 package may require additional PCB space compared to smaller packages

Working Principles

The HV9911NG-G is a buck LED driver IC that utilizes a constant current control scheme. It operates by converting the input voltage to a regulated constant current output suitable for driving LEDs. The internal circuitry adjusts the duty cycle of the switching transistor to maintain the desired output current, regardless of input voltage variations.

Detailed Application Field Plans

The HV9911NG-G is commonly used in various lighting applications, including:

1. General illumination: Provides efficient and reliable LED driving for residential and commercial lighting fixtures.
2. Automotive lighting: Enables precise control of LED brightness in automotive headlights, taillights, and interior lighting.
3. Display backlighting: Offers efficient power management for LED backlights in LCD monitors, TVs, and signage.
4. Street lighting: Facilitates energy-efficient LED street lighting systems with dimming capabilities for reduced power consumption during low traffic periods.

Detailed and Complete Alternative Models

• HV9910BNG-G: Similar functionality with a lower maximum output current of 500mA
• HV9912NG-G: Higher maximum output current of 1.5A for high-power LED applications
• HV9913NG-G: Integrated boost converter for driving LEDs from a lower input voltage source

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