LMR23630: pin to pin device for higher Output current recommend

Hi team,

my customer Narwal that EE is robot vacuum cleaner. they use LMR23630ADDAR but it's Output current is 3A which is too small. could you help recommend a pin to pin Buck for them? The requirements as below:

1. Input voltage is 11V-18V
2. Output voltage is 3.8V-3.95V, accuracy ±5%
3. Output current up to 4.5A
4. PIN to pin with LMR23630ADDAR

If we don't have pin to pin device. You can also help other more suitable device. Thanks.

Regards,

Amber