Datasheet

INH/UVLO
VIN
AGND
R
UVLO
V
IN
TPS84210
www.ti.com SLUSAN7A –SEPTEMBER 2011–REVISED MARCH 2012
Programmable Undervoltage Lockout (UVLO)
The TPS84210 implements internal UVLO circuitry on the VIN pin. The device is disabled when the VIN pin
voltage falls below the internal VIN UVLO threshold. The internal VIN UVLO rising threshold is 3.135 V (max)
with a typical hysteresis of 300 mV.
If an application requires a higher UVLO threshold on the VIN pin, the UVLO pin can be configured as shown in
Figure 33. Table 8 lists standard values for R
UVLO
to adjust the VIN UVLO voltage up.
Figure 33. Adjustable VIN UVLO
Table 8. Standard Resistor values for Adjusting VIN UVLO
VIN UVLO (V) (typ) 3.25 3.5 3.75 4.0 4.25 4.5 4.75
R
UVLO
(kΩ) 294 133 86.6 63.4 49.9 42.2 35.7
Hysteresis (mV) 325 335 345 355 365 375 385
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