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Fabricante

A8222

LOW-DROPOUT REGULATORS— HIGH EFFICIENCY

Allegro MicroSystems 

8220 THRU 8233

LOW-DROPOUT

REGULATORS

ELECTRICAL CHARACTERISTICS at TA = +25°C, VE ≥ 2.0 V (unless otherwise noted).

Limits

Characteristic

Symbol Test Conditions

Min. Typ. Max.

Output Voltage

VO

(reference specified VO(nom))

Output Volt. Temp. Coeff.

Line Regulation

Load Regulation

Dropout Voltage

Ground Terminal Current

ENABLE Input Voltage

ENABLE Input Current

Rejection Ratio

aVO

∆VO(∆VI)

∆VO(∆IO)

VImin - VO

IGND

IQ

VEH

VEL

IE

PSRR

4 V ≤ VI ≤ 7 V, 10 µA ≤ IO ≤ 50 mA*

VI = VO(nom), IO = 50 mA

VI = 6 V, IO = 10 mA, TJ ≤ 125°C

4 V ≤ VI ≤ 7 V, IO = 1 mA

1 mA ≤ IO ≤ 50 mA*, 4 V ≤ VI ≤ 7 V

IO = 50 mA

VI < 7 V, IO ≤ 50 mA

VI ≤ 7 V, VE ≤ 0.8 V, IO = 0 mA

4 V ≤ VI ≤ 7 V, Output ON

4 V ≤ VI ≤ 7 V, Output OFF

VE = VI = 7 V

VI = VO(nom) + 1.5 V, Vi = 100 mV, IO = 10 mA,

f = 1 kHz

f = 10 kHz

-0.05

—

—

—

—

—

—

—

2.0

—

—

0.00

—

-0.20

3.0

—

125

32

—

—

—

—

—

70

—

52

+0.05

-0.25

—

10

20

250

45

1.0

—

0.8

±1.0

—

—

Output Noise

en

10 Hz ≤ f ≤ 100 kHz, IO = 10 mA, CO = 10 µF

—

0.5

—

Typical values are at TA = +25°C and are given for circuit design information only.

* Pulse test (≤20 ms). See previous page for duty cycle limitations.

Units

V

V

mV/°C

mV

mV

mV

µA

µA

V

V

µA

dB

dB

µV/√Hz

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