MIC29310 datasheet(3/12 Pages) MICREL

3 / 12 page

November 2006

MIC29310/29312

Micrel

Electrical Characteristics(Note 11)

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

Parameter

Condition

Min

Typ

Max

Units

Output Voltage

10mA ≤ IO ≤ IFL, (VOUT + 1V) ≤ VIN ≤ 8V, Note 4

–2

Line Regulation

IO = 10mA, (VOUT + 1V) ≤ VIN ≤ 16V

0.06

0.5

Load Regulation

VIN = VOUT + 1V, 10mA ≤ IOUT ≤ IFULL LOAD, Notes 4, 8

0.2

ΔVO / ΔT

Output Voltage Temperature Coefﬁcient, Note 8

100

ppm/°C

Dropout Voltage

ΔVOUT = –1%, Note 5

IO = 100mA

200

IO = 750mA

220

IO = 1.5A

330

IO = 3A

600

1000

Ground Current

IO = 750mA, VIN = VOUT + 1V

IO = 1.5A

IO = 3A

150

IGNDDO Ground Pin

VIN = 0.5V less than speciﬁed VOUT. IOUT = 10mA

Current at Dropout

Current Limit

VOUT = 0V, Note 6

3.0

3.8

Minimum Load Current

en, Output Noise Voltage

CL = 10µF

400

µVRMS

(10Hz to 100kHz) IL = 100mA

CL = 33µF

260

µVRMS

Reference (MIC29312 only)

Reference Voltage

10mA ≤ IO ≤ IFL, VOUT + 1V ≤ VIN ≤ 8V, Note 4

1.215

1.265

VMAX

Adjust Pin Bias Current

120

Reference Voltage

Note 9

ppm/°C Temperature Coefﬁcient

Adjust Pin Bias Current

0.1

nA/°C

Temperature Coefﬁcient

Enable Input (MIC29312 only)

Input Logic Voltage

low (off)

0.8

high (on)

2.4

Enable Pin Input Current

VEN = VIN

µA

VEN = 0.8V

–

µA

Regulator Output

Note 10

µA

Current in Shutdown

µA

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.

Note 4: Full Load current is deﬁned as 3A for the MIC29310/29312. For testing, VOUT is programmed to 5V.

Note 5: Dropout voltage is deﬁned as the input-to-output differential when the output voltage drops to 99% of its nominal value with VOUT + 1V applied

to VIN.

Note 6: For this test, VIN is the larger of 8V or VOUT + 3V.

Note 7: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current plus the ground

pin current.

Note 8: Output voltage temperature coefﬁcient is deﬁned as the worst case voltage change divided by the total temperature range.

Note 9: VREF ≤ VOUT ≤ (VIN – 1V), 2.4V ≤ VIN ≤ 16V, 10mA < IL ≤ IFL, TJ ≤ TJ(max).

Note 10: VEN ≤ 0.8V and VIN ≤ 8V, VOUT = 0.

Note 11: Speciﬁcation for packaged product only.

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