MIC5350 datasheet(4/12 Pages) MICREL

4 / 12 page

Micrel, Inc.

MIC5350

June 2010

M9999-060410

Absolute Maximum Ratings(1)

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

Enable Input Voltage (VEN1 , VEN2).....................−0.3V to VIN

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

(3)

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

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

ESD Rating

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

Operating Ratings(2)

Supply Voltage (VIN)..................................... +2.6V to +5.5V

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

Junction Temperature ............................... –40°C to +125°C

Junction Thermal Resistance

8-Pin 2mm x 2mm Thin MLF

® (θJA) ...................90°C/W

Electrical Characteristics(5)

VIN = VEN1 = VEN2 = VOUT + 1.0V; higher of the two regulator outputs, IOUTLDO1 = IOUTLDO2 = 100µA; COUT1 = COUT2 = 2.2µF; CBYP = 0.1µF;

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

Parameter

Conditions

Min.

Typ.

Max.

Units

Variation from nominal VOUT

-2.0

+2.0

Output Voltage Accuracy

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

-3.0

+3.0

Line Regulation

VIN = VOUT + 1V to 5.5V; IOUT = 100µA

0.05

0.3

0.6

%/V

Load Regulation

IOUT1, 2 = 100µA to 300mA

IOUT2 =100µA to 500mA

0.5

0.7

2.0

2.5

Dropout Voltage

(6)

IOUT1, 2 = 100µA

IOUT1, 2 = 50mA

IOUT1, 2 = 300mA

IOUT2 = 500mA

0.1

125

200

300

Ground Current

VEN1 ≥ 1.2V; VEN2 ≤ 0.2V; IOUT = 0mA to 300mA

VEN1 ≤ 0.2V; VEN2 ≥ 1.2V; IOUT2 = 0mA to 500mA

VEN1 = VEN2 = 1.2V; IOUT1 = 300mA, IOUT2 = 500mA

130

175

240

µA

Ground Current in Shutdown

VEN1 = VEN2 = 0V

0.01

µA

Ripple Rejection

f = 1kHz; COUT = 2.2µF; CBYP = 0.1µF

f = 20kHz; COUT = 2.2µF; CBYP = 0.1µF

VOUT1 = 0V

350

560

850

Current Limit

VOUT2 = 0V

550

950

1500

Output Voltage Noise

COUT = 2.2µF; CBYP = 0.1µF; 10Hz to 100kHz

µVRMS

Enable Inputs (EN1 / EN2)

Logic Low

0.2

Enable Input Voltage

Logic High

1.2

VIL ≤ 0.2V

0.01

Enable Input Current

VIH ≥ 1.2V

0.01

µA

Turn-on Time (See Timing Diagram)

Turn-on Time (LDO1 and 2)

COUT = 2.2µF; CBYP = 0.01µF

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

5. Specification for packaged product only.

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

2.6V, the dropout voltage is the input-to-output differential with the minimum input voltage 2.6V.

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