TC1071

3

PRELIMINARY INFORMATION

TC1071-01

6/13/97

100mA ADJUSTABLE CMOS

LDO WITH SHUTDOWN

Symbol

Parameter

Test Conditions

Min

Typ

Max

Units

ADJ Input

Adjust Input Leakage Current

—

50

—

pA

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

range from 0.1mA 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. Ground pin current is the regulator pass transistor gate current. The total current drawn from the input supply is the sum of the load

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

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

initiate thermal shutdown. Please see

Thermal Considerations section of this data sheet for more details.

Pin No.

(SOT-23A-5)

Symbol

Description

Unregulated supply input.

2

GND

Ground terminal.

3

SHDN

Shutdown control input. The regulator is fully enabled when a logic high is applied to this

input. The regulator enters shutdown when a logic low is applied to this input. During

shutdown, output voltage falls to zero and supply current is reduced to 0.05 microamp

(typical).

4

ADJ

Output voltage adjust terminal. Output voltage setting is programmed with a resistor divider

(See Text).

Regulated voltage output.

PIN DESCRIPTION