Datasheet

LM10010
www.ti.com SNVS717C –JULY 2011–REVISED MARCH 2013
Deglitch Time
The four digital input pins all have deglitch filters which prevent transient noise from affecting the operation of the
LM10010. These filters will also impart a small delay to the digital signal. On the VIDS latching signal, there is an
additional delay. As mentioned previously, this allows for the VID data lines and the VIDS strobe to be set
simultaneously without the need for setup time.
Enable Pin and UVLO
The enable (EN) pin allows the output of the device to be enabled or disabled with an external control signal.
This pin is a precision analog input that enables the device when the voltage exceeds 1.34V (typical). The EN pin
has 100 mV of hysteresis and will disable the output when the enable voltage falls below 1.24V (typical). If EN is
not used, it can be left open, and will be pulled high by an internal 2 µA current source. Since the enable pin has
a precise turn-on threshold it can be used along with an external resistor divider network from VIN to configure
the device to turn-on at a precise input voltage.
The LM10010 has a built-in under-voltage lockout (UVLO) protection circuit that keeps the device from operating
until the input voltage reaches 2.65V (typical). The UVLO threshold has 200 mV of hysteresis that keeps the
device from responding to power-on glitches during startup. Note that the enable and the UVLO are functionally
the same as a reset. Bringing the device back from a low enable setting or from a VDD under-voltage event will
reset the device back to its startup default setting.
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