MIC5337 datasheet(3/11 Pages) MICREL

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Micrel, Inc.

MIC5337

September 2008

M9999-090908-A

Absolute Maximum Ratings

(1)

Supply Voltage (VIN)........................................ –0.3V to +6V

Enable Voltage (VEN)......................................... –0.3V to VIN

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

(3)

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

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

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

ESD Rating

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

Operating Ratings

(2)

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

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

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

Junction Thermal Resistance

1.2mm x 1.6mm

Thin MLF-4 (θJA) ............................173°C/W

Electrical Characteristics

(5)

VIN = VEN = VOUT + 1V; COUT = 1µF; 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

–1.5

+1.5

Output Voltage Accuracy

Variation from nominal VOUT

–2.0

+2.0

VIN = VOUT +1V to 5.5V, IOUT = 100µA

0.01

0.3

%/V

Line Regulation

VIN = VOUT +1V to 5.5V, IOUT = 100µA

0.5

%/V

Load Regulation

(6)

IOUT = 100µA to 300mA

0.05

Dropout Voltage

(7)

IOUT = 50mA

IOUT = 100mA

IOUT = 150mA

IOUT = 300mA

180

150

300

Ground Pin Current

(8)

IOUT = 100µA to 300mA

µA

Ground Pin Current in Shutdown

VEN = 0V

0.01

µA

Ripple Rejection

f = 1kHz; COUT = 1µF; IOUT = 300mA

f = 20kHz; COUT = 1µF; IOUT = 300mA

Current Limit

VOUT = 0V

400

600

950

Output Voltage Noise

COUT = 1µF, 10Hz to 100kHz

µVRMS

Auto-Discharge NFET

Resistance

VEN=0V, VIN=3.6V

280

400

Ω

Enable Voltage

Logic Low

0.2

Enable Voltage

Logic High

1.2

VIL ≤ 0.2V

0.01

µA

Enable Current

VIH ≥ 1.2V

0.01

µA

Turn-on Time

COUT = 1µF; IOUT = 300mA

150

500

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. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.

5. Specification for packaged product only.

6. 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.

7. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal VOUT.

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

current.

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