CS8161

http://onsemi.com

6

Temperature (

°C)

Figure 14. Enable Threshold Voltage vs.

Temperature

Figure 15. ENABLE Current vs. ENABLE

Voltage

100

1.305

1

Figure 16. 12 mA ENABLE Current vs.

ENABLE Voltage

0

5

−20

1.300

1.295

1.290

1.285

−40

0

20

40

60

80

100

120

140

80

60

40

20

0

02

3

4

5

4

3

2

1

0

510

15

20

25

(1.8500 V, 253.9 nA.)

DEFINITION OF TERMS

Dropout Voltage − The input−output voltage differential

at which the circuit ceases to regulate against further

reduction in input voltage. Measured when the output

voltage has dropped 100 mV from the nominal value

obtained at 14 V input, dropout voltage is dependent upon

load current and junction temperature.

Input Voltage − The DC voltage applied to the input

terminals with respect to ground.

Input Output Differential − The voltage difference

between the unregulated input voltage and the regulated

output voltage for which the regulator will operate.

Line Regulation − The change in output voltage for a

change in the input voltage. The measurement is made under

conditions of low dissipation or by using pulse techniques

such that the average chip temperature is not significantly

affected.

Load Regulation − The change in output voltage for a

change in load current at constant chip temperature.

Long Term Stability − Output voltage stability under

accelerated life−test conditions after 1000 hours with

maximum rated voltage and junction temperature.

Output Noise Voltage − The rms AC voltage at the

output, with constant load and no input ripple, measured

over a specified frequency range.

Quiescent Current − The part of the positive input

current that does not contribute to the positive load current,

i.e., the regulator ground lead current.

Ripple Rejection − The ratio of the peak−to−peak input

ripple voltage to the peak−to−peak output ripple voltage.

change in output voltage for a thermal variation from room

temperature to either temperature extreme.