LM3410-Q1: Inquiry regarding device recommendations

Hi JH,

What's your application? and what's your current requirement? Thanks!

Hello Hailee Xu,

Thank you for your reply.

The customer's target is a remote control for automotive applications.

The LED characteristics are as follows:

Regards,

JH

HI JH,

The main challenge for LM3410 is Vout range. do you want to have an auto-version device or non-auto is acceptable? or could you increase the input voltage? or is it possible to add a boost CV stage before the LED driver IC?

May I know a specific scenario for "a remote control for automotive applications? Please let me know if you want to have a detailed discussion via the email. Thanks!

Hi Hailee Xu,

Below is the customer's response.

The target application is a BT remote control for a car rear seat monitor.

Since we plan to use 2 battery cells (1.5V * 2 = 3V), the Vin(min) value in the specifications of LM3410-Q1 should be lower than the the early 2-volt range.

For example, we thought a product like the Microchip MCP1664 would be appropriate. If you know of a TI alternative that's more efficient than the Microchip MCP1664, please let us know.

Additionally, the LED connection configuration will use 3x3.

Thanks!

Hi JH，

Thanks for the update, regarding the LED connection configuration, do you mean 3p3s - three LEDs in series per string and three strings are connected?

• if so, like I mentioned before, the challenge for LM3410-Q1 is about the Vout range, if the Vout could be close to 3 x VF, LM3410-Q1 could support it since the output voltage is within 24V. 
• If not and considering the Vout of 35V, TPS61165-Q1 can be considered. Additionally, if you require a lower input voltage below 2V, we are developing a new device that perfectly meets your needs. if you are interested, we can discuss more details via the email.

The above discussion is based on single-channel solution, please let me know if you require a three-channel solution. Thanks!

Hi Hailee,

Thank you for your help.

Here is the customer's response.

Hailee Xu said:

Thanks for the update, regarding the LED connection configuration, do you mean 3p3s - three LEDs in series per string and three strings are connected?

Correct.

For LM3410-Q1, the VIN (min) specification is 2.7V, which is higher than the required specification and cannot be used.

Please recommend another replacement that meets the specifications below.

- AEC-Q100 Grade Compliant (Auto-Grade)
- Low Input Voltage (Early 2V Range)
- Output Current Limit (min) (200mA or more)
- Output Voltage (20V or more)

Please send me an email regarding new devices.

Thanks!

Hi Hailee,

The customer is waiting for your response. Thanks!