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LM3409EVAL/NOPB
Evaluation Board, PFET Controller, Buck Current Regulator, 1 Output, LM3409
- Manufacturer:
- TEXAS INSTRUMENTS TEXAS INSTRUMENTS
- Manufacturer Part No:
- LM3409EVAL/NOPB
- Order Code:
- 3125213
Product Overview
The LM3409EVAL/NOPB evaluation board showcases the LM3409 PFET controller for a buck current regulator. It is designed to drive 4 LEDs (VO = 15V) at a maximum average LED current (ILED = 1A) from a DC input voltage (VIN = 24V). The switching frequency (Fsw = 525kHz) is targeted for the nominal operating point, however Fsw varies across the entire operating range. However, if the input voltage drops below the regulated LED string voltage, the converter goes into dropout and VO = VIN ideally. The evaluation board showcases several features of the LM3409 including both analog dimming using a potentiometer (R5) tied to the IADJ pin and internal PWM dimming using the EN pin. There is a header (J1) with a removable jumper, which is used to select PWM dimming or low power shutdown. The board has a right angle connector (J2) which can mate with an external LED load board allowing for the LEDs to be mounted close to the driver.
- 6V to 42V input voltage range
- Differential, high side current sense
- Cycle by cycle current limit
- No control loop compensation required
- 10,000:1 PWM dimming range
- 250:1 analog dimming range
- Supports all ceramic output capacitors and capacitor less outputs
- Low power shutdown and thermal shutdown
Applications
Automotive, LED Lighting, Industrial, Power Management
Product Information
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- :
- Buck (Step Down)
- :
- 1Outputs
- :
- 1A
- :
- 15V
- :
- 6V
- :
- 42V
- :
- LM3409
- :
- PWM
- :
- Demo Board LM3409
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- -
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CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.
Available to manufacturer lead time of 22 days
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