MIC5331 datasheet(3/10 Pages) MICREL

3 / 10 page

Micrel, Inc.

MIC5331

February 2008

M9999-021408-A

Absolute Maximum Ratings

(1)

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

Enable Input Voltage (VEN1, VEN2) .......................... 0V to VIN

Power Dissipation .................................. Internally Limited

(3)

Lead Temperature (soldering, 3sec.)......................... 260°C

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

ESD Sensitive

(4)

Operating Ratings

(2)

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

Enable Input Voltage (VEN1, VEN2) .......................... 0V to VIN

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

Junction Thermal Resistance

2mm x 2mm Thin MLF-8 (

θJA) ...........................90°C/W

Electrical Characteristics

(5)

VIN = VEN1 = VEN2 = VOUT + 1.0V, higher of the two regulator outputs; IOUT1 = IOUT2 = 100µA; COUT1 = COUT2 = 1µF;

TJ = 25°C, bold values indicate –40°C < TJ < +125°C; unless noted.

Parameter

Condition

Min

Typ

Max

Units

Variation from nominal VOUT

–1.0

+1.0

Output Voltage Accuracy

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

–2.0

+2.0

Line Regulation

VIN = VOUT +1V to 5.5V; IOUT = 100µA

0.02

0.3

0.6

%/V

Load Regulation

IOUT = 100µA to 300mA

0.2

0.5

Dropout Voltage

IOUT = 50mA

IOUT = 300mA

120

240

Ground Current

VEN1 = High; VEN2 = Low; IOUT = 100µA to 300mA

VEN1 = Low; VEN2 = High; IOUT = 100µA to 300mA

VEN1 = VEN2 = High; IOUT1= 300mA, IOUT2 = 300mA

µA

Ground Current in Shutdown

VEN1 = VEN2 < 0.2V

0.01

1.0

µA

Ripple Rejection

f = 1kHz; COUT = 2.2µF

f = 20kHz; COUT = 2.2µF

Current Limit

VOUT = 0V

350

550

800

Output Voltage Noise

COUT=1µF; 10Hz to 100kHz

µVRMS

Enable Inputs (EN1/EN2 )

Logic Low

0.2

Enable Input Voltage

Logic High

1.2

VIL ≤ 0.2V

0.01

1.0

µA

Enable Input Current

VIH ≥ 1.2V

0.01

1.0

µA

Turn-on Time

Turn-on Time (LDO1 and 2)

COUT = 1µF (Enable of First LDO)

COUT = 1µF (Enable of Second LDO after First Enabled)

140

110

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.

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