MIC47300WD datasheet(3/11 Pages) MICREL

3 / 11 page

Micrel, Inc.

MIC47300

October 2009

M9999-102309-A

Absolute Maximum Ratings

(1)

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

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

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

ESD Rating

(3).................................................................. 2kV

Operating Ratings

(2)

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

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

Junction Temperature (TJ) ..................–40°C ≤ TJ ≤ +125°C

Maximum Power Dissipation..................................... Note 4

Package Thermal Resistance

TO-252 (

θJC) ........................................................3°C/W

TO-252 (

θJA).......................................................56°C/W

Electrical Characteristics

(5)

VIN = VOUT + 1V, VBIAS = VOUT + 2.1V, IOUT = 10mA; TA = 25°C, bold values indicate –40°C≤ TJ ≤ +125°C, unless noted.

Symbol

Parameter

Condition

Min

Typ

Max

Units

VLNREG

Line Regulation

VIN = VOUT +1V to 6.5V

–0.1

0.01

+0.1

%/V

VLDREG

Load Regulation

IOUT = 10mA to A

0.2

0.5

VDO

Dropout Voltage (VIN -VOUT)

IOUT = 1.5A

IOUT = 3A

105

230

200

400

VDO(BIAS)

Dropout Voltage (VBIAS - VOUT)

Note 6

IOUT = 3A

1.24

2.1

IGND

Ground Pin Current, Note 7

IOUT = 10mA

IOUT = 3A

IBIAS

Current thru VBIAS

IOUT = 10mA

IOUT = 3A

150

ILIM

Current Limit

VOUT = 0V

6.5

Thermal Shutdown

168

°C

TSD

Thermal Shutdown Hysteresis

°C

Reference (Adjust Pin)

VADJ

Reference Voltage

0.891

0.882

0.9

0.909

0.918

IADJ

Adjust Pin Current

VADJ = 1.2V

0.01

μA

Notes:

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

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

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

4. PD(MAX) = (TJ(MAX) – TA) / θJA, where θJA, depends upon the printed circuit layout. See “Applications Information.”

5. Specification for packaged product only.

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

7. 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.

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