PS22921 datasheet(3/8 Pages) ETC2

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PS22921

Plessey Semiconductors Ltd, Tamerton Road, Roborough, Plymouth, UK PL6 7BQ

Data Sheet 292203 issue 1

Tel: +44 (0)1752 693000

Fax: +44 (0)1752 693200

Web: www.plesseysemiconductors.com

email: sales@plesseysemi.com; October 12, 2010

Absolute Maximum Ratings

(1)

Maximum Input Supply Voltage………………........….… -0.8 to 15V

Enable Voltage………………………………………….... -0.8 to 15V

Power Good…………………………………………….... -0.8 to 15V

Feedback Voltage………………………………………...... -0.8 to 5V

ByPass Voltage……………………………………………. -0.8 to 5V

Recommended Operating Conditions

Input Voltage………………………………….………….. 1.7 to 12V

Enable input Voltage……………………….…………….. 0V to VIN

Junction operating Temperature………………..…… -40

˚C to 125˚C

Thermal Information

(2)

SOT23-5

1 θ

......................................................................... 220

˚C/W

SOIC-8

1 θ

.......................................................................... ….36

˚C/W

Storage Temperature Range……………......................... -65 to 150

˚C

Lead Temperature…………………..………….……………… 260˚C

Junction Temperature……………………….…………... -40 to 125˚C

ELECTRICAL CHARACTERISTICS

Unless otherwise noted: VIN=5V; VO=3.3V; CIN=COUT=22µF; Typical values are TA= 25°C

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Fixed option; 100mV increment

0.5

5.0

Output Voltage Range

Adjustable

0.5

Vin -VDO

Output Voltage Tolerance

TBD

Feedback Voltage

VFB

0.494

0.50

0.506

Maximum Output Current

500

Shutdown current

ISHD

VEN=GND

0.1

1.0

µA

Current Limit

ILIM

550

800

IOUT= 100mA

TBD

IOUT= 250mA

TBD

Supply Current

IOUT= 500mA

TBD

Load Regulation

IOUT= 0.1mA – 150mA

-1.0

1.0

Line Regulation

VIN= Vo+1V to 12V; IOUT=10mA

-0.5

0.5

IOUT= 100mA

IOUT= 250mA

Dropout Voltage

VDO

IOUT= 500mA

300

Enable Threshold Low

VEN(L)

0.8

Enable Threshold High

VEN(H)

1.4

Input Enable Low Current

IEN(L)

VEN = 0V

0.01

2.0

µA

Input Enable High Current

IEN(H)

VEN =2V

5.0

8.0

µA

Freq=100Hz

Ripple Rejection Ratio

PSRR

IO=50mA

Freq=10KHz

CBYP= Open

TBD

Output Noise

BW; 10Hz – 100KHz

Io=100mA

COUT= 10µF

CBYP=100nF

TBD

nV/√Hz

Power good low threshold

VOL_PG

IPG=200µA

400

Power good delay

VPG_delay

500

µs

Thermal Shutdown

TSD

140

˚C

Thermal Shutdown Hys.

TSD_HYS

˚C

Notes:

Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Measured on approximately

1” square of 1oz copper.

The PS22921 is guaranteed to meet performance specifications over the -40°C to +125°C operating junction temperature range and

is assured by design, characterization, and correlation with statistical process control.

Load regulation is measured using pulse techniques with duty cycle <5%.

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