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AS29372

AS29372

Rev. 2.6 06/05

Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.

3

Austin Semiconductor, Inc.

ELECTRICAL CHARACTERISTICS (Cont.)

Shutdown Input

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Low (ON)

0.7

High (OFF)

2.0

VSHUTDOWN = 2.4V

30

50

100

VSHUTDOWN = 26V

450

600

750

Regulator Output

Current in

Shutdown

(note 8)

3

10

20

µA

Input Logic Voltage

V

Shutdown Pin

Input Current

µA

NOTES:

1. Unless otherwise specified, V

IN

= V

OUT

= 1V, I

L

= 5mA, C

L

= 10µF, T

J

= T

A

. Device shall be biased in accordance with

Figure 1 with V

SHUTDOWN

< 0.6V, V

IN

= 6V, R

L

= 300 kilohms ±1%.

2. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature

range.

3. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage

due to heating effects are covered by the thermal regulation specification.

4. This parameter is tested up to 600mA; however, limits are guaranteed but not tested to 750mA.

5. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 100mV below its

nominal value measured at 1V differential. At very low values of programmed output voltage, the minium input supply

voltage of 2V (2.3V over temperature) must be taken into account.

6. Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load

current plus the ground pin current.

7. V

REF

< V

OUT

< (V

IN

- 1V), 4.3V < V

IN

< 26V, 5mA < I

L

< 600mA, T

J

< T

JMAX

.

8. See Figure 1 with R

L

> 150 kilohms, V

SHUTDOWN

> 2V, V

IN

< 26V, V

OUT

= 0.

9. Thermal regulation is defined as the change in output voltage at a time (t) after a change in power dissipation is applied,

excluding line and load regulation effects. Specification is for a 200mA load pulse at V

IN

= 20V (at 4W pulse) for

t = 10ms.