August 2004

3

MIC5213

MIC5213

Micrel

Electrical Characteristics

V

Symbol

Parameter

Conditions

Min

Typ

Max

Units

V

O

Output Voltage Accuracy

–33

%

–44

%

∆V

Output Voltage Temp. Coefficient

Note 5

50

200

ppm/

°C

∆V

Line Regulation

V

0.008

0.3

%

0.5

%

∆V

Load Regulation

I

0.08

0.3

%

0.5

%

V

Dropout Voltage, Note 7

I

mV

I

200

350

mV

I

250

mV

I

280

600

mV

I

Q

Quiescent Current

V

0.01

10

µA

I

GND

Ground Pin Current, Note 8

I

180

µA

I

225

750

µA

I

850

µA

I

1800

3000

µA

I

GNDDO

Ground Pin Current in Dropout

V

200

300

µA

I

LIMIT

Current Limit

V

180

250

mA

∆V

Thermal Regulation

Note 9

0.05

%/W

Enable Input

V

IL

Enable Input Voltage Level

Logic Low (off)

0.6

V

V

IH

Logic High (on)

2.0

V

I

IL

Enable Input Current

V

0.01

1

µA

I

IH

V

8

50

µA

Note 1.

Exceeding the absolute maximum rating may damage the device.

Note 2.

The device is not guaranteed to function outside its operating rating.

Note 3.

Devices are ESD sensitive. Handling precautions recommended.

Note 4.

The maximum allowable power dissipation is a function of the maximum junction temperature, T

resistance,

θ

P

will go into thermal shutdown.

θ

Note 5.

Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.

Note 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.

Note 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.

Note 8.

Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of

the load current plus the ground pin current.

Note 9.

Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line

regulation effects. Specifications are for an 80mA load pulse at V