LP3879 datasheet(4/18 Pages) TI

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OUT

LP3879

SNVS396B – MAY 2006 – REVISED APRIL 2013

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Electrical Characteristics

Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the temperature range of -40°C to

125°C. Limits are ensured through design, testing, or correlation. The limits are used to calculate the Average Outgoing

Quality Level (AOQL). Unless otherwise specified: VIN = 3.0V, VOUT = 1V, IL = 1 mA, COUT = 10 µF, CIN = 4.7 µF, VS/D = 2V,

CBYPASS = 10 nF.

Symbol

Parameter

Conditions

Min(1)

Typical(2)

Max(1)

Units

-1.0

1.00

1.0

Output Voltage Tolerance

%Vnom

-2.0

2.0

1 mA

≤ IL ≤ 800 mA, 3.0V ≤ VIN ≤ 6V

1.00

-3.0

3.0

0.014

Output Voltage Line

3.0V

≤ VIN ≤ 6V

0.007

%/V

0.032

Regulation

IL = 800 mA, VOUT ≥ VOUT(NOM) - 1%

2.5

3.1

Minimum Input Voltage

IL = 800 mA, VOUT ≥ VOUT(NOM) - 1%

VIN (min)

Required To Maintain

2.5

2.8

≤ TJ ≤ 125°C

Output Regulation

IL = 750 mA, VOUT ≥ VOUT(NOM) - 1%

2.5

3.0

IGND

250

IL = 100 µA

200

µA

275

Ground Pin Current

IL = 200 mA

1.5

3.3

8.5

IL = 800 mA

5.5

IO(PK)

Peak Output Current

VOUT ≥ VOUT(NOM) − 5%

1200

IO(MAX)

Short Circuit Current

RL = 0 (Steady State)

1400

Output Noise Voltage

BW = 100 Hz to 100 kHz

µV(RMS)

(RMS)

CBYPASS = 10 nF

Ripple Rejection

f = 1 kHz

SHUTDOWN INPUT

VS/D

VH = Output ON

1.4

1.6

S/D Input Voltage

VL = Output OFF, IIN ≤ 10 µA

0.1

0.50

VOUT ≤ 10 mV, IIN ≤ 50 µA

0.6

IS/D

VS/D = 0

0.02

−1

S/D Input Current

µA

VS/D = 5V

(1)

Limits are ensured through testing, statistical correlation, or design.

(2)

Typical numbers reperesent the most likely norm for 25°C operation.

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