Description: 
   HM5105A/5105B is a dual-function flashlight LED driver chip, which uses a very small SOT23 lead-free package and only requires a capacitor device, which saves both PCB space and system cost. Three dry batteries or one lithium battery can drive 1-5W LED. HM5105A/5105B By turning the power on/off to change the output mode, brightness adjustment or flash function can be achieved.
   HM5105A/5105B can work at -40℃~+85℃

FEATUREs:
✦ HM5105Ahas two functions: full brightness and 25% brightness
   HM5105B has two functions: full brightness and flashing
✦ Working voltage: 2.5V~5V
✦ Working efficiency up to 92%
✦ 100mΩ low on-resistance
✦ 1.4A current driving capability
✦ Built-in NMOS can directly drive 1~5W LED
✦ SOT23 green package

APPLICATION range:
✦ Mobile flashlight
✦ LED headlight
✦ LED driver