MIC5259 datasheet(3/9 Pages) MICREL

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MIC5259

Micrel, Inc.

May 2005

M9999-051305

Electrical Characteristics(5)

VIN = VOUT + 1V, VEN = VIN; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted.

Symbol

Parameter

Conditions

Min

Typical Max

Units

Output Voltage Accuracy

IOUT = 100µA

–1.5

1.5

–3

ΔVLNR

Line Regulation

VIN = VOUT + 1V to 6V

–0.3

0.02

0.3

%/V

ΔVLDR

Load Regulation

IOUT = 0.1mA to 300mA(6)

0.6

3.0

VIN – VOUT

Dropout Voltage(7)

IOUT = 150mA

150

IOUT = 300mA

300

500

550

Quiescent Current

VEN ≤ 0.4V (shutdown)

0.2

µA

IGND

Ground Pin Current(8)

IOUT = 0mA

105

150

µA

IOUT = 300mA

120

250

µA

PSRR

Ripple Rejection; IOUT = 150mA

f = 10Hz, COUT = 1.0µF, CBYP = 0.01µF

f = 10Hz, VIN = VOUT + 0.3V

f = 10kHz, VIN = VOUT + 0.3V

ILIM

Current Limit

VOUT = 0V

350

475

Output Voltage Noise

COUT = 1.0µF, CBYP = 0.01µF,

µV(rms)

f = 10Hz to 100kHz

Enable Input

VIL

Enable Input Logic-Low Voltage

VIN = 2.7 to 5.5V, regulator shutdown

0.4

VIH

Enable Input Logic-High Voltage

VIN = 2.7V to 5.5V, regulator enabled

1.6

IEN

Enable Input Current

VIL ≤ 0.4V, regulator shutdown

0.01

µA

VIH ≥ 1.6V, regulator enabled

0.01

µA

Shutdown Resistance Discharge

500

Thermal Protection

Thermal Shutdown Temperature

150

°C

Thermal Shutdown Hysteresis

°C

Notes:

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

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

3. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max)–TA)/θJA. Exceeding the maximum allowable

power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. The θJA of the MIC5259-x.xBM5 (all ver-

sions) is 235°C/W on a PC board. See “Thermal Considerations” section for further details.

4. Devices are ESD sensitive. Handling precautions recommended.

5. Speciﬁcation for packaged product only.

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

from 0.1mA to 300mA. Changes in output voltage due to heating effects are covered by the thermal regulation speciﬁcation.

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

tial. For outputs below 2.7V, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.7V. Minimum input operating

voltage is 2.7V.

8. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin cur-

rent.

Absolute Maximum Ratings(1)

Supply Input Voltage (VIN)....................................0V to +7V

Enable Input Voltage (VEN) ..................................0V to +7V

Power Dissipation (PD)..........................Internally Limited(3)

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

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

Lead Temperature (soldering, 5 sec.)........................ 260°C

ESD(4)............................................................................ 2kV

Operating Ratings(2)

Input Voltage (VIN).......................................... +2.7V to +6V

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

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

Thermal Resistance

ThinSOT™-23 (θJA)...........................................235°C/W

2mm × 2mm MLF™ (θJA) ....................................90°C/W

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