LQH1N101J04M - Brand New Murata Electronics IC Chips
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Description
The LQH1N101J04M is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. It can drive two, three or four LEDs in series from a Li-ion cell. The series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors.
The LQH1N101J04M switches at 1.2 MHz, allowing the use of tiny external components. The output capacitor can be as small as 0.22μF, saving space and cost versus alternative solutions. It also features a low 95mV feedback voltage that minimizes power loss in the current setting resistor for better efficiency.
Specifications and features
- Inherently matched LED current
- High efficiency: 84% typical
- Drives up to four LEDs from a 2.8V supply
- Drives up to six LEDs from a 5V supply
- 36V rugged bipolar switch
- Fast 1.2MHz switching frequency
- Uses tiny 1 mm tall inductors
- Requires only 0.22μF output capacitor
- Low profile TSOT package
Application Scenarios
The LQH1N101J04M is widely used in various applications that require driving white LEDs with a constant current. Some common application scenarios include:
- LED lighting fixtures
- Backlighting for LCD displays
- Automotive lighting
- Portable electronic devices
Comparison
Advantages:
- Uniform brightness without the need for ballast resistors
- High efficiency
- Wide operating voltage range
- Compact size
Disadvantages:
- Not suitable for driving more than four LEDs from a 2.8V supply
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Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
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Popular parts of the same kind
- Datasheet: Download LQH1N101J04M
- Chipdatas Part: CD94-LQH1N101J04M
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/13 21:01 +0800
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