MIC5271YM5TR 查看數據表（PDF） - Micrel

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MIC5271YM5TR

µCap Negative Low-Dropout Regulator

Micrel 

Micrel, Inc.

MIC5271

Absolute Maximum Ratings(3)

Input Voltage (V-IN) ........................................ −20V to +0.3V

Enable Voltage (VEN)...................................... −20V to +20V

Power Dissipation (PD) .............................. Internally Limited

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

Lead Temperature (soldering, 10s)............................ 260°C

Storage Temperature (TS).........................–65°C to +150°C

ESD Rating.................................................................Note 6

Operating Ratings(4)

Input Voltage (V-IN) ........................................ –16V to –3.3V

Enable Voltage (VEN)...................................... −16V to +16V

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

Thermal Resistance (θJA)(5) ....................................235°C/W

Electrical Characteristics(7)

V-IN = V-OUT – 1.0V; COUT = 4.7µF, IOUT = 100µA; TJ = +25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless otherwise noted.

Symbol

Parameter

Condition

Min. Typ. Max.

Units

V-OUT

Output Voltage Accuracy

−2

Variation from nominal V-OUT

−3

+2

%

+3

∆V-OUT/∆T

Output Voltage Temperature Coefficient Note 8

∆V-OUT/V-OUT Line Regulation

V-IN = V-OUT – 1V to –16V

100

ppm/°C

0.15

0.04

%/V

0.2

∆V-OUT/V-OUT Load Regulation

IOUT = −100µA to −100mA,

Note 9

1.8

0.4

%

2.0

V-IN − V-OUT Dropout Voltage, Note 10

IOUT = −100µA

IOUT = −50mA

IOUT = −100mA

-55

-360 −500

mV

−700

-500

−900

IGND

IGND_SD

PSRR

Ground Current, Note 11

Ground Current in Shutdown

Ripple Rejection

IOUT = −100µA

IOUT = −50mA

IOUT = −100mA

VEN = ±0.6V

f = 120Hz

-25 −100

µA

-0.9

mA

-2.0 -3.0

−1.0 0.1 +1.0

µA

50

dB

ILIMIT

Current Limit

V-OUT = 0V

235

350

mA

Notes:

3. Exceeding the absolute maximum ratings may damage the device.

4. The device is not guaranteed to function outside its operating ratings.

5. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max) the junction-to-ambient thermal resistance, θJA,

and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using: PD(max) = (TJ(max) – TA)

÷ θJA, where θJA is 235°C/W. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go

into thermal shutdown. See the “Thermal Considerations” sub-section in the Application Information for details.

6. Devices are ESD sensitive. Handling precautions are recommended.

7. Specification for packaged product only.

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

9. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range

from 100µA to 100mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.

10. Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V

differential.

11. Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of the load

current plus the ground pin current.

April 6, 2015

3

040615-2.0 (while in progress)

Revision 2.0 (final document)

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