JAJSBH5B March 2011 – June 2019 LM21212-2
PRODUCTION DATA.
The LM21212-2 has a built-in undervoltage lockout protection circuit that keeps the device from switching until the input voltage reaches 2.7V (typical). The UVLO threshold has 200 mV of hysteresis that keeps the device from responding to power-on glitches during start up. If desired the turnon point of the supply can be changed by using the precision enable pin and a resistor divider network connected to VIN as shown in Figure 23 in the design guide.