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LM3405A: Laser diode driver

Part Number: LM3405A
Other Parts Discussed in Thread: TPS92200, TPS54200

Hi TI,

I am trying to make a driver for laser diode. The device consists of 4 laser diodes. Two infrared and one red. This is a medical device and is intended for phototherapy purposes. 

The laser diode part number: HL63193MG. Its operating current is 1A. Here is the datasheet: https://www.laserdiodesource.com/files/pdfs/laserdiodesource_com/8596/638nm_USHIO_Laser_Diode_700mW_HL63193MG-1633804869.pdf 

This device needs to be portable and small. Since there are various approaches for designing a laser diode driver, which approach/topology is more efficient in terms of power consumption? 

Kind regards,
Mamzi