MIC49300-0.9WR datasheet(3/8 Pages) MICREL

Part #	MIC49300-0.9WR

Description	3.0A Low Voltage LDO Regulator w/Dual Input Voltages

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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3 / 8 page

August 2005

3

M9999-082605-B

MIC49300

Micrel, Inc.

Electrical Characteristics

TA

T

T = 25°C with V

A

BIAS = VOUT +2.1V; VIN = VOUT + 1V; bold values indicate –40°C < TJ < +125°C, Note 4; unless otherwise speciﬁed.

Parameter

Conditions

Min

Typ

Max

Units

Output Voltage Accuracy

At 25°C, ﬁxed voltage options

–1

+1

%

Over temperature range

–2

+2

%

Line Regulation

VIN = 2.0V to 6.5V

–0.1

0.01

+0.1

%/V

Load Regulation

IL = 0mA to 3A

0.2

LL

0.5

%

Dropout Voltage (VIN – VOUT)

IL = 1.5A

125

LL

200

mV

IL = 3A

280

LL

400

mV

Dropout Voltage (VBIAS – VOUT)

IL = 3A

1.5

LL

2.1

V

Note 4

Ground Pin Current,

Note 5

IL = 0mA

2

LL

5

mA

IL = 3A

25

LL

50

mA

Ground Pin Current in Shutdown

VEN ≤ 0.6V, (IBIAS + ICC), Note 6

0.07

5

µA

Current thru VBIAS

IL = 0mA

20

LL

35

mA

IL = 3A

50

LL

150

mA

Current Limit

VOUT = 0V

6.5

9

A

Enable Input, Note 6

Enable Input Threshold

Regulator enable

1.6

V

(Fixed Voltage only)

Regulator shutdown

0.6

V

Enable Pin Input Current

0.1

1.0

µA

Reference

Reference Voltage

Adjustable option only

0.891

0.9

0.909

V

0.882

0.918

V

Note 1. Exceeding the absolute maximum rating may damage the device.

Note 2. The device is not guaranteed to function outside its operating rating.

Note 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.

Note 4. For VOUT ≤1V, VBIAS dropout speciﬁcation does not apply due to a minimum 3V VBIAS input.

Note 5. IGND = IBIAS + (IIN – IOUT). At high loads, input current on VIN will be less than the output current, due to drive current being supplied by VBIAS.

Note 6. Fixed output voltage versions only.

Absolute Maximum Ratings (Note 1)

Supply Voltage (VIN)........................................................8V

Bias Supply Voltage (VBIAS) ............................................ 8V

Enable Input Voltage (VEN) ............................................. 8V

Power Dissipation..................................... Internally Limited

ESD Rating,

Note 3 ...................................................... 2kV

Operating Ratings (Note 2)

Supply Voltage (VIN).........................................1.4V to 6.5V

Bias Supply Voltage (VBIAS) ................................3V to 6.5V

Enable Input Voltage (VEN) ............................... 0V to VBIAS

Junction Temperature Range ..............–40°C ≤TJ ≤ +125°C

Package Thermal Resistance

S-PAK(θJC) ...........................................................2°C/W

Parameter

Conditions

Min

Typ

Max

Units

Output Voltage Accuracy

At 25°C, ﬁxed voltage options

–1

+1

%

Over temperature range

Line Regulation

V

Load Regulation

I

)

I

)

I

Ground Pin Current in Shutdown

V

I

Current Limit

V

Parameter

Conditions

Min

Typ

Max

Units

Output Voltage Accuracy

At 25°C, ﬁxed voltage options

–1

+1

%

= 0mA to 3A

0.2

= 1.5A

125

= 3A

280

= 3A

1.5

= 0mA

2

= 3A

25

0.07

= 0mA

20

= 3A

50

= 0V

6.5

Parameter

Conditions

Min

Typ

Max

Units

Output Voltage Accuracy

At 25°C, ﬁxed voltage options

–1

+1

%

0.01

= 0mA to 3A

0.2

= 1.5A

125

= 3A

280

= 3A

1.5

= 0mA

2

= 3A

25

0.07

= 0mA

20

= 3A

50

= 0V

6.5

Parameter

Conditions

Min

Typ

Max

Units

Output Voltage Accuracy

At 25°C, ﬁxed voltage options

–1

+1

%

mA

Parameter

Conditions

Min

Typ

Max

Units

Output Voltage Accuracy

At 25°C, ﬁxed voltage options

–1

+1

%

%/V

%

mV

V

mA

µA

mA

A

Enable Input Threshold

Regulator enable

(Fixed Voltage only)

Regulator shutdown

Enable Pin Input Current

0.1

1.0

µA

(Fixed Voltage only)

Regulator shutdown

Enable Pin Input Current

0.1

1.0

µA

V

(Fixed Voltage only)

Regulator shutdown

Enable Pin Input Current

0.1

1.0

µA

V

Enable Pin Input Current

0.1

1.0

µA

V

Enable Pin Input Current

0.1

1.0

µA

Reference Voltage

Adjustable option only

0.891

0.9

0.909

V

Reference Voltage

Adjustable option only

0.891

0.9

0.909

V

Reference Voltage

Adjustable option only

0.891

0.9

0.909

V

Reference Voltage

Adjustable option only

0.891

0.9

0.909

V

Reference Voltage

Adjustable option only

0.891

0.9

0.909

V

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