WL2803E28-5/TR [WILLSEMI]

Ultra low dropout, 500mA, CMOS LDO;


型号：	WL2803E28-5/TR
厂家：	WILLSEMI
描述：	Ultra low dropout, 500mA, CMOS LDO
文件：	总10页 (文件大小：879K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

WL2803E

Ultra low dropout, 500mA, CMOS LDO

Http://www.sh-willsemi.com

Descriptions

The WL2803E series are ultra low dropout, Low

quiescent current, high PSRR CMOS LDO. The

dropout voltage is 130mV (Typ.) at 500mA load

current.

Using CMOS construction, the quiescent current

consumed by the WL2803E is typically 150uA over the

entire input voltage range, making it attractive for

consumer, networking applications that demand high

output current. The WL2803E series are available in

wide output voltage range version from 1.2V to 3.3V

with 0.1V step.

SOT-23-5L

The WL2803E series offer thermal shutdown (OTP)

and current limit functions, to assure the stability of

chip and power system at wrong condition, and it uses

trimming technique to guarantee output voltage

accuracy within ±2%.

Pin Configuration (Top View)

The WL2803E regulators are available in SOT-23-5L

packages. Standard products are Pb-free and

Halogen-free.

Features



Input voltage

Output voltage

Output current

PSRR

: 2.5V~5.5V

: 1.2V~3.3V

: 500mA

WS = Device code

** = Voltage code (33: 3.3V)

YY = Year code

WW = Week code

Marking

: 65dB @ 1KHz

Dropout voltage : 130mV @ I_OUT=0.5A

Output noise : 100uV

Quiescent current : 150μA Typ.

Order Information

For detail information, Please refer to page 9.

Applications



LCD TV

STB

Computer, Graphic card

Network communication equipments

Others portable electronics devices

Will Semiconductor Ltd.

Oct. 2018 – Rev 2.0

WL2803E

Typical Application

Pin Description

VIN

4.7uF

VOUT

4.7uF

PIN Symbol Description

VIN

GND

Input

Ground

Enable, Active High

Not connect

Output

OFF

VOUT

When the output is less than 2V, it is recommended

that the Cout is more than 10uF.

Block Diagram

Will Semiconductor Ltd.

Oct. 2018 – Rev 2.0

WL2803E

Absolute Maximum Ratings

Parameter

Symbol

V_IN

Value

Unit

Input voltage range

Output voltage range

Power dissipation *¹*³

Power dissipation *²*³

Thermal resistance *¹

Thermal resistance *²

Junction temperature

Lead temperature(10s)

Storage temperature

-0.3～6.5

-0.3～V_IN

0.7

V_OUT

P_D

0.5

180

^oC/W

^oC

R_θJA

250

T_J

T_L

150

260

Tstg

HBM

-55 ~ 150

±8000

±400

ESD Ratings

Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum

Ratings” may cause substantial damage to the device. Functional operation of this device at other conditions

beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may

affect device reliability.

*1: Surface mounted on FR-4 Board using 1 square inch pad size, dual side, 1oz copper

*2: Surface mounted on FR-4 board using minimum pad size, 1oz copper

*3: Power dissipation is calculate by P_D= (V_IN-V_OUT) x I_OUT

Recommend Operating Ratings

Parameter

Symbol

V_IN

Value

Unit

^oC

Operating Supply voltage

Operating Temperature Range

2.5～5.5

-40～85

Topr

Will Semiconductor Ltd.

Oct. 2018 – Rev 2.0

WL2803E

Electronics Characteristics (Ta=25^oC, V_IN=V_OUT+1V, C_IN=C_OUT=4.7uF, unless otherwise noted)

Parameter

Symbol

Condition

Min.

V_OUT

Typ.

Max.

V_OUT

Unit

V_OUT<1.5V, V_IN=2.5V,

I_OUT=1mA

V_OUT

30mV

V_OUT

30mV

V_OUT

Output Voltage

V_OUT

250

V_OUT≧1.5V, I_OUT=1mA

V_OUT=V_OUT*0.98, I_OUT=1A

0.98

1.02

Dropout Voltage

Current Limit

V_DROP

I_LIM

450

V_IN=5V

0.65

V_OUT=3.3V, V_IN=4.3~6.0V,

I_OUT=1mA

Line Regulation

△V_LINE

Load Regulation

Quiescent Current

Shut-down Current

△V_Load

I_Q

V_OUT=3.3V , I_OUT=1~500mA

V_OUT=3.3V, I_OUT=0

V_EN= 0V

150

0.1

200

1.0

I_SHDN

V_IN=(V_OUT+1V)_DC+0.2V_P-P

F=1KHz ,I_OUT=10mA

V_IN=(V_OUT+1V)_DC+0.2V_P-P

F=10KHz, I_OUT=10mA

10Hz to 100KHz, C_OUT=4.7μF

V_IN=5.5V, I_OUT=1mA

V_IN=5.5V, I_OUT=0mA

Power Supply Ripple Rejection

PSRR

Output noise voltage

e_NO

V_ENH

V_ENL

T_SD

100

µV_P-P

EN logic high voltage

1.2

EN logic low voltage

0.4

^oC

Thermal shutdown threshold

Thermal shutdown hysteresis

165

△ T_SD

Will Semiconductor Ltd.

Oct. 2018 – Rev 2.0

WL2803E

Typical characteristics (Ta=25^oC, V_IN=V_OUT+1V, C_IN=C_OUT=4.7uF, unless otherwise noted)

300

250

200

150

100

200

190

180

170

160

150

140

130

120

110

100

V_OUT=3.3V

I_OUT=0mA

V_OUT=3.3V

I_OUT=0mA

3.0

3.5

4.0

4.5

5.0

5.5

6.0

-50 -25

75 100 125 150

Ambient Temperature: T_A(^oC)

Input Voltage: V_IN(V)

Quiescent current vs. Supply voltage

Quiescent current vs. Ambient temperature

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

I_OUT=600mA

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

2.9

I_OUT=1mA

2.8

-50 -25

3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4

75 100 125 150

Ambient Temperature: T_A(^oC)

Input Voltage: V_IN(V)

Output voltage vs. Supply voltage

Output voltage vs. Ambient temperature

3.8

T_A= -40^oC

T_A= 25^oC

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

V_IN=5.5V

V_IN=4.2V

V_IN=3.8V

V_IN=4.2V

V_IN=3.8V

100

200

300

400

500

600

100

200

Output Current: I_OUT(mA)

Output voltage vs. Output current

300

400

500

600

Output Current: I_OUT(mA)

Output voltage vs. Output current

Will Semiconductor Ltd.

Oct. 2018 – Rev 2.0

WL2803E

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

300

250

200

150

100

T_A= 85^oC

V_OUT=3.3V

T_A= 85^OC

V_IN=5.5V

V_IN=4.2V

V_IN=3.8V

T_A= 25^OC

T_A= -40^OC

100

200

300

400

500

600

100

200

300

400

500

600

Output Current: I_OUT(mA)

Dropout voltage vs. Output current

Output voltage vs. Output current

PSRR

Will Semiconductor Ltd.

Oct. 2018 – Rev 2.0

WL2803E

Startup with EN

Shutdown with EN

Line Regulation

Load Regulation

Will Semiconductor Ltd.

Oct. 2018 – Rev 2.0

WL2803E

Package outline dimensions

SOT-23-5L

0.20

(Ⅰ)

(Ⅱ)

TOP VIEW

SIDE VIEW

Dimensions in Millimeters

Symbol

Min.

Typ.

Max.

1.45

0.15

1.30

0.50

0.21

3.12

3.00

1.80

0.00

0.90

0.30

0.10

2.72

2.60

1.40

1.10

0.40

2.92

2.80

1.60

0.95 BSC

1.90 BSC

0.45

0.30

0.60

0°

8°

Will Semiconductor Ltd.

Oct. 2018 – Rev 2.0

WL2803E

TAPE AND REEL INFORMATION

Reel Dimensions

Tape Dimensions

Quadrant Assignments For PIN1 Orientation In Tape

Q1 Q2

User Direction of Feed

Reel Dimension

Overall width of the carrier tape

Pitch between successive cavity centers

7inch

8mm

2mm

13inch

12mm

4mm

16mm

8mm

Pin1 Pin1 Quadrant

Will Semiconductor Ltd.

Oct. 2018 – Rev 2.0

WL2803E

ORDER INFORMATION

Operating

Temperature

-40 ~ +85°C

Ordering No.

V_OUT(V)

Package

Marking

Shipping

WL2803E12-5/TR

WL2803E18-5/TR

WL2803E25-5/TR

WL2803E28-5/TR

WL2803E30-5/TR

WL2803E33-5/TR

1.2

1.8

2.5

2.8

3.0

3.3

SOT-23-5L WS12/YYWW

SOT-23-5L WS18/YYWW

SOT-23-5L WS25/YYWW

SOT-23-5L WS28/YYWW

SOT-23-5L WS30/YYWW

SOT-23-5L WS33/YYWW

3000/Tape and Reel

Will Semiconductor Ltd.

Oct. 2018 – Rev 2.0

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