MIC5375 datasheet(5/18 Pages) MICREL

5 / 18 page

Micrel, Inc.

MIC5375/6/7/8

January 2009

M9999-011309-B

Absolute Maximum Ratings

(1)

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

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

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

(3)

Lead Temperature (soldering, 5 sec)......................... 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)......................................... 2.5V to 5.5V

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

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

Junction Thermal Resistance

1mm x 1mm Thin MLF-4 (

θJA) .........................250°C/W

1.2mm x 1.2mm Thin MLF-8(

θJA) ....................250°C/W

SC-70-5 (

θJA) ................................................256.5°C/W

Electrical Characteristics

(5)

VIN = VEN = VOUT + 1V; CIN = COUT = 1µF for Vout ≥ 2.5V, CIN = COUT = 2.2µF for VOUT < 2.5V; 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

–2.0

+2.0

Output Voltage Accuracy

Variation from nominal VOUT

–3.0

+3.0

Line Regulation

VIN = VOUT +1V to 5.5V; IOUT = 100µA

0.02

0.3

Load Regulation

(6)

IOUT = 100µA to 150mA

0.3

1.0

Dropout Voltage

(7)

IOUT = 50mA

IOUT = 150mA

120

100

200

Ground Pin Current

(8)

IOUT = 0mA

µA

Ground Pin Current in Shutdown

VEN ≤ 0.2V

0.05

µA

Ripple Rejection

f = 1kHz; COUT = 1µF

f = 10kHz; COUT = 1µF

Current Limit

VOUT = 0V

200

370

550

Output Voltage Noise

COUT = 1µF, 10Hz to 100kHz

200

µVRMS

Auto-Discharge NFET

Resistance

VEN = 0V; VIN = 3.6V

Ω

Reference Voltage (MIC5377/8)

Reference Voltage Accuracy

0.97

1.03

Adjust Pin Input Current

0.01

μA

Enable Input

Logic Low

0.2

Enable Input Voltage

Logic High

1.2

VIL ≤ 0.2V

0.01

µA

Enable Input Current

VIH ≥ 1.2V

0.01

µA

Turn-on Time

COUT = 1µF; IOUT = 150mA

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. Regulation is measured at constant junction temperature using low duty cycle pulse testing.

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 differential.

For outputs below 2.5V, dropout voltage is the input-to-output differential with the minimum input voltage 2.5V.

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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