MIC3975BMM datasheet(4/12 Pages) MICREL

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MIC3975

Micrel

MIC3975

February 2005

Symbol

Parameter

Condition

Min

Typ

Max

Units

Adjustable Output Only

Reference Voltage

1.228

1.240

1.252

1.215

1.265

Note 10

1.203

1.277

Adjust Pin Bias Current

120

Reference Voltage

Note 11

ppm/°C

Temp. Coefﬁcient

Adjust Pin Bias Current

0.1

nA/°C

Temp. Coefﬁcient

Note 1. Exceeding the absolute maximum ratings 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. PD(max) = (TJ(max) – TA) ÷ θJA, where θJA depends upon the printed circuit layout. See “Applications Information.”

Note 5. Output voltage temperature coefﬁcient is ΔVOUT(worst case) ÷ (TJ(max) – TJ(min)) where TJ(max) is +125°C and TJ(min) is –40°C.

Note 6. VDO = VIN – VOUT when VOUT decreases to 98% of its nominal output voltage with VIN = VOUT + 1V. For output voltages below 2.25V, dropout

voltage is the input-to-output voltage differential with the minimum input voltage being 2.25V. Minimum input operating voltage is 2.25V.

Note 7. IGND is the quiescent current. IIN = IGND + IOUT.

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

Note 9. For a 2.5V device, VIN = 2.250V (device is in dropout).

Note 10. VREF ≤ VOUT ≤ (VIN – 1V), 2.25V ≤ VIN ≤ 16V, 10mA ≤ IL ≤ 750mA, TJ = TMAX.

Note 11. Thermal regulation is deﬁned as the change in output voltage at a time t after a change in power dissipation is applied, excluding load or line

regulation effects. Speciﬁcations are for a 200mA load pulse at VIN = 16V for t = 10ms.

Note 12. Speciﬁcation for packaged product only.

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