MIC5303 datasheet(4/8 Pages) MICREL

4 / 8 page

Micrel, Inc.

MIC5303

October 2006

M9999-102506-B

Absolute Maximum Ratings(1)

Supply Voltage (VIN)............................................. 0V to +6V

Enable Input (VEN) ................................................ 0V to +6V

Power Dissipation

(3)...................................Internally Limited

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

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

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

Operating Ratings(2)

Supply voltage (VIN) ..................................... +2.3V to +5.5V

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

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

Junction Thermal Resistance

Thin MLF

® -4 (θ

JA) ...........................................173°C/W

Electrical Characteristics(4)

VIN = VOUT + 1V; COUT = 1.0µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C to +125°C, unless noted.

Parameter

Condition

Min

Typ

Max

Units

Variation from nominal VOUT

–2

Output Voltage Accuracy

Variation from nominal VOUT; –40°C to +125°C

–3

Line Regulation

VIN = VOUT +1V to 5.5V; IOUT = 100µA

0.02

0.3

0.6

%/V

Load Regulation

(5)

IOUT = 100µA to 150mA

0.5

2.0

Dropout Voltage

(6)

IOUT = 100µA

IOUT = 50mA

IOUT = 150mA

IOUT = 300mA

0.1

100

200

Ground Pin Current

(7)

IOUT = 0 to 300mA, EN = High

120

µA

Ground Pin Current in

Shutdown

VEN = 0V

0.1

µA

Ripple Rejection

f = up to 1kHz; COUT = 1.0µF

f = 1kHz – 20kHz; COUT = 1.0µF

Current Limit

VOUT = 0V

350

460

850

Output Voltage Noise

COUT =1µF, 10Hz to 100kHz

120

µVRMS

Enable Input

Logic Low

0.2

Enable Input Voltage

Logic High

1.1

VIL < 0.2V

0.01

µA

Enable Input Current

VIH > 1.0V

0.01

µA

Turn-on Time

COUT = 1.0µF

100

µs

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.

4. Specification for packaged product only.

5. Regulation is measured at constant junction temperature using low duty cycle pulse testing, changes in output voltage due to heating effects are

covered by the thermal regulation specification.

6. 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.

7. 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

current.

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