MIC5207

Micrel

January 2000

3

MIC5207

Electrical Characteristics

V

0

°C ≤ T

Symbol

Parameter

Conditions

Min

Typical

Max

Units

V

O

Output Voltage Accuracy

variation from specified V

OUT

–33

%

–44

%

∆V

Output Voltage

Note 4

40

ppm/

°C

Temperature Coefficient

∆V

Line Regulation

V

0.005

0.05

%/V

0.10

%/V

∆V

Load Regulation

I

0.05

0.5

%

0.7

%

V

Dropout Voltage, Note 6

I

60

mV

80

mV

I

115

175

mV

250

mV

I

140

280

mV

325

mV

I

165

300

mV

400

mV

I

GND

Quiescent Current

V

0.01

1

µA

V

5

µA

I

GND

Ground Pin Current, Note 7

V

130

µA

170

µA

I

350

650

µA

900

µA

I

720

1100

µA

2000

µA

I

1800

2500

µA

3000

µA

PSRR

Ripple Rejection

75

dB

I

LIMIT

Current Limit

V

320

500

mA

∆V

Thermal Regulation

Note 8

0.05

%/W

e

no

Output Noise

I

260

nV Hz

470pF from BYP to GND

ENABLE Input

V

IL

Enable Input Logic-Low Voltage

regulator shutdown

0.4

V

0.18

V

V

IH

Enable Input Logic-High Voltage

regulator enabled

2.0

V

I

IL

Enable Input Current

V

0.01

–1

µA

V

–2

µA

I

IH

V

5

20

µA

V

25

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:

The maximum allowable power dissipation at any T

allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The

θ

(M5) is 235

°C/W and the TO-92 (Z) is 180°C/W (0.4" leads) or 160°C/W (0.25" leads) soldered to a PC board. See “Thermal Considerations.”

Note 4:

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

Note 5:

Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load

range from 0.1mA to 180mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.

Note 6:

Dropout voltage is the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential.

Note 7:

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 8:

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 a 180mA load pulse at V