MIC5319 Ver la hoja de datos (PDF) - Micrel

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Fabricante

MIC5319

500mA µCap Ultra-Low Dropout High PSRR LDO Regulator

Micrel 

Micrel, Inc.

MIC5319

Absolute Maximum Ratings(1)

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

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

Power Dissipation (PD) ........................... Internally Limited(3)

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

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

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

ESD Rating(4).................................................................. 3kV

Operating Ratings(2)

Supply Input Voltage (VIN)............................ +2.5V to +5.5V

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

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

Package Thermal Resistance

MLF® (θJA)..........................................................93°C/W

TSOT-23 (θJA) ..................................................235°C/W

Electrical Characteristics(4)

VIN = VOUT +1.0V; COUT = 2.2µF; 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

Output Voltage Accuracy

Variation from nominal VOUT, IOUT = 100mA to 500mA

−1.0

−2.0

+1.0

%

+2.0

Feedback Voltage

(ADJ Option)

1.2375

1.25

1.2625

V

1.225

1.25

1.275

Line Regulation

Load Regulation(6)

Dropout Voltage(7, 8)

Ground Pin Current(9)

Ground Pin Current in

Shutdown

VIN = VOUT +1V to 5.5V

IOUT = 100µA to 500mA

IOUT = 50mA

IOUT = 500mA

IOUT = 0 to 500mA

VEN ≤ 0.2V

0.04

0.3

%/V

0.1

0.5

%

20

40

mV

200

400

90

150

µA

0.5

µA

f = up to 1kHz; COUT = 2.2µF ceramic; CBYP = 0.1 µF

70

Ripple Rejection

f = 10kHz; COUT = 2.2µF ceramic; CBYP = 0.1 µF

60

Current Limit

VOUT = 0V

600

700

Output Voltage Noise

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

40

dB

mA

µVrms

Turn-On Time

Enable Input Voltage

COUT = 2.2µF; CBYP = 0.1 µF

Logic Low (Regulator Shutdown)

Logic High (Regulator Enabled)

40

100

µs

0.2

V

1.2

Enable Input Current

VIL = ≤ 0.2V (Regulator Shutdown)

VIH = ≥ 1.0V (Regulator Shutdown)

0.01

1

µA

0.01

1

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 may go into thermal shutdown.

4. Devices are ESD sensitive. Handling precautions recommended. Human body model.

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 VOUT. For outputs below 2.5V,

dropout voltage spec does not apply, as part is limited by minimum VIN spec of 2.5V. There may be some typical dropout degradation at VOUT <3V.

8. For ADJ option, VOUT = 3V for dropout specification.

9. 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.

May 2010

4

M9999-052510

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