What the 28 V supply ceiling and multi-chemistry support mean on the bench
The BQ24703RHDR is a multi-chemistry battery charger controller from Texas Instruments, rated for a 28 V maximum supply input — that sets the ceiling for the adapter or bus voltage feeding the charging stage. If your rail sits at 24 V nominal with a 10 % tolerance, you have margin; a 28 V rail at full tolerance leaves no headroom and risks hitting the abs-max. Multi-chemistry support means the same IC handles Li-ion, Li-Po, NiMH, and NiCd cells without swapping the controller — useful when a product line spans chemistries or when field-replacement packs vary. The charger algorithm adjusts the termination voltage and charge profile per chemistry, but the external passives (sense resistor, inductor, FETs) still need to be sized for the worst-case current of the target pack.
Industrial temperature range and package — where it fits
A stencil and reflow profile matching the datasheet land pattern is the reliable path for production.
Active production — sourcing without the scavenger hunt
It is a current-production part available through authorized and independent channels alike.