© 2007 Microchip Technology Inc.

DS21354D-page 3

TC1072/TC1073

SHDN Input

SHDN Input High Threshold

45

—

—

SHDN Input Low Threshold

—

—

15

ERROR Open Drain Output

1.0

—

—

V

Output Logic Low Voltage

—

—

400

mV

1 mA Flows to ERROR

ERROR Threshold Voltage

—

—

V

See

Figure 4-2

ERROR Positive Hysteresis

—

50

—

mV

Note 7

—

2.5

—

ms

TC1072/TC1073 ELECTRICAL SPECIFICATIONS (CONTINUED)

Boldface type specifications apply for junction temperatures of -40°C to +125°C.

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

Note

1:

2:

3:

Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested over a load range

from 0.1 mA to the maximum specified output current. Changes in output voltage due to heating effects are covered by the thermal

regulation specification.

4:

Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value.

5:

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

6:

The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the

thermal shutdown. Please see Section 5.0 “Thermal Considerations” for more details.

7:

8:

Apply for Junction Temperatures of -40°C to +85°C.

9: