© 2002 Microchip Technology Inc.

DS21526A-page 3

TC1305

TC1305 ELECTRICAL SPECIFICATIONS (CONTINUED)

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

Thermal Shutdown Die

Temperature

—160

—

°C

Thermal Shutdown Hysteresis

—

15

—

°C

eN

Output Noise

—

200

—

nV

√Hz I

—29

—

SHDN Input

SHDN Input High Threshold

65

——

SHDN Input Low Threshold

—

—

15

SELECT Input

SELECT Input HIgh Threshold

——

V

SELECT Input Low Threshold

—

0.2

RESET Output

1.0

1.2

—

—

6.0

6.0

Reset Threshold

2.59

2.55

2.63

—

2.66

2.70

Reset Circuit Supply Current

—

20

40

µA

RESET =Open

Reset Threshold Tempco

—

30

—

ppm/°C

—

100

—

µsec

Reset Active Time-out Period

140

300

560

msec

RESET Output Voltage Low

—

—

—

—

—

—

0.3

0.4

0.3

RESET Output Voltage High

—

—

—V

Note 1:

2:

3:

4:

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.

5:

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.

6:

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

7:

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 section of this data sheet for more details.

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