NCV8667 Ver la hoja de datos (PDF) - ON Semiconductor

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NCV8667

150 mA LDO Regulator with Enable, Reset and Early Warning

ON Semiconductor 

NCV8667

DEFINITIONS

General

All measurements are performed using short pulse low

duty cycle techniques to maintain junction temperature as

close as possible to ambient temperature.

the device is capable to supply minimum 200 mA without

sending Reset signal to microprocessor.

Short Circuit Current Limit is output current value

measured with output of the regulator shorted to ground.

Output Voltage

The output voltage parameter is defined for specific

temperature, input voltage and output current values or

specified over Line, Load and Temperature ranges.

PSRR

Power Supply Rejection Ratio is defined as ratio of output

voltage and input voltage ripple. It is measured in decibels

(dB).

Line Regulation

The change in output voltage for a change in input voltage

measured for specific output current over operating ambient

temperature range.

Line Transient Response

Typical output voltage overshoot and undershoot

response when the input voltage is excited with a given

slope.

Load Regulation

The change in output voltage for a change in output

current measured for specific input voltage over operating

ambient temperature range.

Load Transient Response

Typical output voltage overshoot and undershoot

response when the output current is excited with a given

slope between low−load and high−load conditions.

Dropout Voltage

The input to output differential at which the regulator

output no longer maintains regulation against further

reductions in input voltage. It is measured when the output

drops 100 mV below its nominal value. The junction

temperature, load current, and minimum input supply

requirements affect the dropout level.

Quiescent Current

Quiescent Current (Iq) is the difference between the input

current (measured through the LDO input pin) and the

output load current.

Thermal Protection

Internal thermal shutdown circuitry is provided to protect

the integrated circuit in the event that the maximum junction

temperature is exceeded. When activated at typically 175°C,

the regulator turns off. This feature is provided to prevent

failures from accidental overheating.

Maximum Package Power Dissipation

The power dissipation level is maximum allowed power

dissipation for particular package or power dissipation at

which the junction temperature reaches its maximum

operating value, whichever is lower.

Current Limit and Short Circuit Current Limit

Current Limit is value of output current by which output

voltage drops below 96% of its nominal value. It means that

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