MIC29311-5.1BT datasheet(3/12 Pages) MICREL

Part #	MIC29311-5.1BT

Description	3A Fast-Response LDO Regulator for USB Preliminary Information

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Manufacturer	MICREL [Micrel Semiconductor]

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3 / 12 page

December 1998

3

MIC29311

Micrel

Electrical Characteristics

T

A = 25°C, bold values indicate 0°C ≤ TJ ≤ +125°C; unless noted.

Parameter

Condition

Min

Typ

Max

Units

Output Tolerange

10mA

≤ I

OUT < 3A, (VOUT + 1V) ≤ VIN ≤ 8V

–3

+3

%

Line Regulation

I

OUT = 10mA, (VOUT + 1V) ≤ VIN ≤ 8V

0.06

0.5

%

Load Regulation

V

IN = VOUT + 1V, 10mA ≤ IOUT 3A

0.2

1

%

Output Voltage Temperature

Note 5

20

100

ppm/

°C

Coefficient

Dropout Voltage, Note 6

I

OUT = 100mA

80

200

mV

I

OUT = 750mA

220

mV

I

OUT = 1.5A

330

mV

I

OUT = 3A

600

1000

mV

Ground Current, Note 7

V

IN = 6.1V, IOUT = 750mA

5

20

mA

V

IN = 6.1V, IOUT = 1.5A

15

mA

V

IN = 6.1V, IOUT = 3A

60

150

mA

Dropout Ground Current

V

IN = 4.6V, IOUT = 10mA

2

3

mA

Current Limit

V

IN = 3V, VOUT = 0V

3.0

3.8

A

Minimum Load Current

710

mA

Output Noise Voltage

C

LOAD = 10µF

400

µV(rms)

C

LOAD = 33µF

260

µV(rms)

Error Flag Output

Output Leakage Current

V

IN = 6.1V, VERR = 8V

0.1

1

µA

2

µA

Output Low Voltage

V

IN = 4.1V, IERR = 250µA

220

300

mV

400

mV

Absolute Maximum Ratings (Note 1)

Input Voltage (V

IN) ........................................ –20V to +12V

Enable Voltage (V

EN) .................................... –20V to +12V

Error Output Voltage (V

ERR) ............................. 0V to +12V

Lead Temperature (soldering, 5 sec.) ....................... 260

°C

ESD Rating, Note 3

Operating Ratings (Note 2)

Input Voltage (V

IN) ........................................................ +8V

Maximum Power Dissipation (P

D(max)) ..................... Note 4

Junction Temperature (T

J) ........................... 0°C to +125°C

Package Thermal Resistance

TO-220-5

(θ

JA) .................................................... 55°C/W

TO-220-5

(θ

JC) ...................................................... 2°C/W

TO-263-5

(θ

JC) ...................................................... 2°C/W

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