MIC5200

Micrel

3-125

July 1998

3

Electrical Characteristics

Limits in standard typeface are for T

Unless otherwise specified, V

Symbol

Parameter

Conditions

Min

Typical

Max

Units

V

O

Output Voltage

Variation from specified V

OUT

–1

1

%

Accuracy

–2

2

∆V

O

Output Voltage

(Note 2)

40

150

ppm/

°C

∆T

Temperature Coef.

∆V

O

Line Regulation

V

0.004

0.10

%

V

IN

0.40

∆V

O

Load Regulation

I

0.04

0.16

%

V

OUT

0.30

V

Dropout Voltage

I

mV

(Note 4)

I

130

I

150

I

190

I

230

350

I

GND

Quiescent Current

V

0.01

10

µA

I

GND

Ground Pin Current

V

130

µA

I

270

350

I

330

I

500

I

1000

1500

PSRR

Ripple Rejection

70

dB

I

GNDDO

Ground Pin

V

270

330

µA

Current at Dropout

I

I

LIMIT

Current Limit

V

100

250

mA

∆V

O

Thermal Regulation

(Note 6)

0.05

%/W

∆P

D

e

n

Output Noise

100

µV

ENABLE Input

Input Voltage Level

V

IL

Logic Low

OFF

0.7

V

Logic High

ON

2.0

I

IL

ENABLE Input Current

V

0.01

1

µA

I

IH

V

15

50

Note 1:

Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not

apply when operating the device outside of its rated operating conditions. The maximum allowable power dissipation is a

function of the maximum junction temperature, T

temperature, T

(T

regulator will go into thermal shutdown. The

θ

mounted on a PC board (see “Thermal Considerations” section for further details).

Note 2:

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

Note 3:

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 100mA. Changes in output voltage due to heating effects are covered by the thermal regulation

specification.

Note 4:

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 5:

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 6:

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 100mA load pulse at V