LM3402: Use in 2 series and 9 parallel

Dice-K

Mastermind 6740 points

Part Number: LM3402
Other Parts Discussed in Thread: TPS92200

Hi support team,

Can the LM3402 use the following LEDs in 2 series and 9 parallel?
It drives 18 in total.

- LM3402 Vin: 8 ~ 36.5V
- LM3402 Dimming signal: Duty 0~100％, 190Hz±20%, 7V or less

- LED IF: 55mA
- LED VF: 2.85V

LED: NICHIA, NFSW757GT-V3
www.nichia.co.jp/.../NFSW757GT-V3-E(5466)Rs030.pdf

Regards,
Dice-K

over 3 years ago

0 Sean Zhou over 3 years ago

TI__Mastermind 22745 points

Hi Dice-K,

Yes, LM3402 would be a good solution for this, but I would recommend TPS92200 which is the newly released device with enhanced performance and cost optimized.

Sean

0 Dice-K over 3 years ago in reply to Sean Zhou

Mastermind 6740 points

Hi Sean,
Thank you for your reply.

The VIN(MAX) of the TPS92200 is 30V, but thank you for the new product information.

Best regards,
Dice-K

Power management

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LM3402: Use in 2 series and 9 parallel