EC49509

300mA Low Power Low Noise

LDO CMOS Voltage Regulator

Page 4 of 8

2007/11/05

Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Output Voltage

Accuracy

EC49509 – 2.5

EC49509 – 2.8

EC49509 – 3.0

EC49509 – 3.3

1.470

1.764

2.450

2.744

2.940

3.234

1.5

1.8

2.5

2.8

3.0

3.3

1.530

1.836

2.550

2.856

3.060

3.366

V

Line Regulation

—

0.2

—

%/V

Load Regulation

(Note 5)

—

2.0

—

%

Output Voltage

Temperature

Coefficient

Note 4

—

0.1

—

mV/°

C

—

8

—

—

200

—

Dropout

Voltage

(

Note 6)

—

350

—

mV

Thermal Protection Temperature

—

150

—

Thermal Protection

Protection Hysterisys

—

20

—

°C

PSRR

Ripple Rejection

—

70

—

dB

—

0.1

—

Quiescent Current

—

20

—

μA

Voltage Raising, Output Turns On, Logic High

1.6

—

—

Enable Input

Threshold Voltage

Voltage Falling, Output Turns Off, Logic Low

—

—

0.4

V

Current Limit

—

600

—

mA

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:

regulator will go into thermal shutdown. See “Thermal Consideration” section for details

Note 4:

Output voltage temperature coefficient is 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 300mA. Changes in output voltage due to heating effects are covered by

the thermal regulation specification.

Note 6:

Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its

nominal value measured at 0.8V differential.