Revision 5/4/2009

Preliminary and all contents are subject to change without prior notice

© Seaward Electronics Inc., 2006. • www.seawardinc.com.cn • Page 2

300mA Low Power Low Noise

LDO CMOS Voltage Regulator

SE5509B

Absolute Maximum Rating

(1)

Parameter

Symbol

Value

Units

Input Voltage

6

V

Enable Voltage

V

Output Voltage

-0.3 to 4.6

V

Power Dissipation

Internally Limited

(3)

Output Short Circuit Duration

Infinite

Thermal Resistance, Junction-to-Ambient

230

°C/W

Lead Temperature (Soldering, 5 sec.)

260

°C

Junction Temperature

0 to +150

°C

Storage Temperature

-40 to +150

°C

Operating Rating

(2)

Parameter

Symbol

Value

Units

Supply Input Voltage Range

5.5

V

Junction Temperature Range

0 to +125

°C

Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Output Voltage

Accuracy

SE5509B – 2.5

SE5509B– 2.8

SE5509B – 3.0

SE5509B – 3.3

1.455

1.746

2.425

2.716

2.910

3.201

1.5

1.8

2.5

2.8

3.0

3.3

1.545

1.854

2.575

2.884

3.090

3.399

V

Line Regulation

--

0.2

--

%/V

Ordering/Marking Information

Package

Ordering Information

Marking Information

3.3V

SE5509BALG-LF 509ALz

2.8V

SE5509BBLG-LF 509BLz

2.5V

SE5509BCLG-LF 509CLz

1.8V

SE5509BDLG-LF 509DLz

1.5V

SE5509BELG-LF 509ELz

5

1

2

3

4

SOT-23-5L / TSOP-5

(Top View)

VIN

VOUT

BYPASS

GND

ENABLE

3.0V

SE5509BFLG-LF

509FLz

The last character is the batch number.

A dot on top right corner is for lead-free

process.

LF: lead free.