SI-3003KWD datasheet(3/9 Pages) ALLEGRO

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SI-3003KWD

1 A, Low-Dropout,

Dual Output,

1.8 V & 2.5 V Regulator

www.allegromicro.com

Linear

Regulators

ELECTRICAL CHARACTERISTICS at T

A = +25°C, VE = 2 V (unless otherwise noted).

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Channel 1

Output Voltage

I = 3.3 V, IO1 = 10 mA

2.450

2.500 2.550

O1(off)

E = 0 V

—

0.5

Output Volt. Temp. Coeff.

VO1

0°C

≤ T

J ≤ 100°C

—

±0.3

—

mV/°C

Output Short-Circuit Current

OM1

I = 3.3 V, See note

1.2

—

Line Regulation

∆V

∆VI)1

I = 3.2 V ~ 5.0 V, IO1 = 10 mA

—

Load Regulation

∆V

∆IO)1

I = 3.3 V, IO1 = 0 A ~ 1.0 A

—

Dropout Voltage

Imin - VO1

O1 = 1.0 A

—

0.6

Ripple Rejection Ratio

PSRR

I = 3.3 V, 100 Hz ≤ f ≤ 120 Hz

—

Channel 2

Output Voltage

I = 3.3 V, IO2 = 10 mA

1.764

1.800 1.836

O2(off)

E = 0 V

—

0.5

Output Volt. Temp. Coeff.

VO2

0°C

≤ T

J ≤ 100°C

—

±0.3

—

mV/°C

Output Short-Circuit Current

OM2

I = 3.3 V, See note

1.2

—

Line Regulation

∆V

∆VI)2

I = 3.2 V ~ 5.0 V, IO2 = 10 mA

—

Load Regulation

∆V

∆IO)2

I = 3.3 V, IO2 = 0 A ~ 1.0 A

—

Dropout Voltage

Imin - VO2

O2 = 1.0 A

—

0.6

Ripple Rejection Ratio

PSRR

I = 3.3 V, 100 Hz ≤ f ≤ 120 Hz

—

Logic

Ground Terminal Current

GND

I = 3.3 V, IO = 0 mA, VE = 2.0 V

—

1.0

1.5

I = 3.3 V, VE = 0 V

—

0.5

Enable Input Voltage

Output ON

2.0

—

Output OFF

—

0.8

Enable Input Current

E = 2.7 V

—

5.0

µA

E = 0.4 V

—

-12

-100

µA

Thermal Shutdown

O = 10 mA

135

150

—

°C

Typical values are given for circuit design information only.

Note: Output short-circuit current is at point where output voltage has decreased 5%.

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