AIC1730 Ver la hoja de datos (PDF) - Analog Intergrations

Número de pieza

componentes Descripción

Fabricante

AIC1730

Low Noise Low Dropout, 150mA Linear Regulator

Analog Intergrations 

AIC1730

LINE REGULATION

Line regulation is the ability of the regulator to

maintain a constant output voltage as the input

voltage changes. The line regulation is specified as

the input voltage is changed from VIN = VOUT + 1 V to

VIN = VOUT + 6 V and IOUT = 1mA.

LOAD REGULATION

Load regulation is the ability of the regulator to

maintain a constant output voltage as the load

current changes. To minimize temperature effects, it

is a pulsed measurement with the input voltage set to

VIN = VOUT + 1 V. The load regulation is specified

under the output current step of 0.1mA to 150mA.

THERMAL PROTECTION

The thermal sensor protects the device when the

junction temperature exceeds TJ= +155ºC. It signals

the shutdown logic, turning off the pass transistor

and allowing the IC to cool. After the IC’s junction

temperature cools by 15ºC, the thermal sensor will

turn on the pass transistor again. Thermal protection

is designed to protect the device in the event of fault

conditions. For continuous operation do not exceed

the absolute maximum junction-temperature rating of

TJ= 150ºC, or damage may occur to the device.

n APPLICATION INFORMATION

QUIESCENT CURRENT (IQ)

The quiescent current is the current flowing through

the ground pin under no load.

GROUND CURRENT (IGND)

Ground current is the current flowing through the

ground pin under loading.

STANDBY CURRENT (ISTBY)

Standby current is the current flowing into the

regulator when the output is shutdown by setting

V SHDN = 0V, VIN = 8 V.

CURRENT LIMIT (IIL)

The AIC1730 include a current limiter, which

monitors and controls the maximum output current to

be 300mA typically if the output is shorted to ground.

This can protect the device from being damaged.

INPUT-OUTPUT CAPACITORS

Linear regulators require input and output

capacitors to maintain stability. The

recommended minimum value of input capacitor

is 0.22µF. The output capacitor should be

selected within the Equivalent Series Resistance

(ESR) range shown in the graphs below for

stability. Because the ceramic capacitor’s ESR is

lower and its electrical characteristics

(capacitance and ESR) vary widely over

temperature, a tantalum output capacitor is

recommended, especially for heavier load. In

general, the capacitor should be at least

1µF(tantalum) and be rated for the actual

ambient operating temperature range.

Note: It is very important to check the selected

manufactures’ electrical characteristics

(capacitance and ESR) over temperature.

9

Share Link: