TC1268 Datasheet, PDF (3/12 Pages) Microchip Technology – 500mA Fixed Output, Fast Response CMOS LDO with Shutdown

TC1268
TC1268 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: V_IN = V_OUT + 1V, I_L = 100µA, C_L = 3.3µF, SHDN > V_IH, T_A = 25°C, unless otherwise noted. Boldface
type specifications apply for junction temperatures of -40°C to +125°C.
ERROR Output
V_MIN
V_OL
V_TH
Note 1:
2:
3:
4:
5:
6:
7:
8:
Minimum Operating Voltage 1.0
—
—
V
Output Logic Low Voltage
—
—
400
mV 1 mA Flows to ERROR
ERROR Threshold Voltage
—
0.95 x V_R
—
V
V_R is the regulator output voltage setting.
T_C V_OUT = (V_OUTMAX – V_OUTMIN) x 10⁶
V_OUT x ∆T
Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested over a load range from
0.1mA to the maximum specified output current. Changes in output voltage due to heating effects are covered by the thermal regulation
specification.
Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at a 1V
differential.
Thermal Regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or
line regulation effects. Specifications are for a current pulse equal to I_LMAX at V_IN = 6V for T = 10 msec.
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the
thermal resistance from junction-to-air (i.e., T_A, T_J, θ_JA). Exceeding the maximum allowable power dissipation causes the device to initiate
thermal shutdown. Please see Section 4.0 Thermal Considerations for more details.
Hysteresis voltage is referenced to V_R.
The minimum V_IN has to justify the conditions: V_IN ≥ V_R + V_DROPOUT and V_IN ≥ 2.7V for I_L = 0.1mA to I_OUTMAX.
© 2002 Microchip Technology Inc.
DS21379B-page 3