LTC3221-5 Linear Technology, LTC3221-5 Datasheet

LTC3221-5

Manufacturer Part Number

LTC3221-5

Description

Micropower

Manufacturer

Linear Technology

Datasheet

1.LTC3221-5.pdf (12 pages)

Current page: 1 of 12
Download datasheet (521Kb)

www.DataSheet4U.com

FEATURES

APPLICATIO S

■

TYPICAL APPLICATIO

Ultralow Power: 8µA Quiescent Current

Regulated Output Voltages: 3.3V ±4%, 5V ±4%, ADJ

Output Current: Up to 60mA

No Inductors Needed

Very Low Shutdown Current: <1µA

Shutdown Disconnects Load from V

Burst Mode Control

Short-Circuit Protected

Solution Proﬁ le < 1mm

Tiny 2mm × 2mm 6-Pin DFN Package

Low Power 2 AA Cell to 3.3V Supply

Memory Backup Supplies

Tire Pressure Sensors

General Purpose Low Power Li-Ion to 5V Supply

RF Transmitters

Glucose Meters

1.8V to 4.4V (LTC3221-3.3)

2.7V to 5.5V (LTC3221-5)

Range:

REGULATED 3.3V OUTPUT FROM 1.8V TO 4.4V INPUT

REGULATED 5V OUTPUT FROM 2.7V TO 5.5V INPUT

2.2µF

OFF ON

4,7

OUT

GND

SHDN

OUT

LTC3221-X

–

= OmA TO 25mA; V

= OmA TO 60mA; V

= OmA TO 25mA; V

= OmA TO 60mA; V

1µF

= 3.3V ±4%

= 5V ±4%

OUT

3221 TA01

4.7µF

OUT

>1.8V

>2V

>2.7V

>3V

DESCRIPTIO

The LTC

converters that produce a regulated output at up to 60mA.

The input voltage range is 1.8V to 5.5V. Extremely low

operating current (8µA typical at no load) and low external

parts count (one ﬂ ying capacitor and two small bypass

capacitors at V

small, battery-powered applications.

The LTC3221 family includes ﬁ xed 5V and 3.3V output

versions plus an adjustable version. All parts operate

as Burst Mode

to achieve ultralow quiescent current. The chips use a

controlled current to supply the output and will survive

a continuous short-circuit from V

of the adjustable LTC3221 can be used to program the

desired output voltage.

The LTC3221 family is available in a low proﬁ le (0.75mm)

2mm × 2mm 6-pin DFN package.

Mode is a registered trademark of Linear Technology Corporation. All other trademarks are

the property of their respective owners.

Regulated Charge Pump

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Burst

3221 family are micropower charge pump DC/DC

LTC3221-3.3/LTC3221-5

1.5

= 25°C

= –45°C

= 90°C

2.0

and V

No-Load Input Current

switched capacitor voltage doublers

vs Supply Voltage

SUPPLY VOLTAGE (V)

2.5

OUT

3.0

) make them ideally suited for

Micropower,

3.5

in 2 × 2 DFN

OUT

4.0

to GND. The FB pin

3221 TA01b

LTC3221/

4.5

3221f

Related parts for LTC3221-5

Related keywords

LTC3221-5 datasheet
LTC3221-5 data sheet
LTC3221-5 pdf datasheet
LTC3221-5 component
LTC3221-5 part
LTC3221-5 distributor
LTC3221-5 RoHS
LTC3221-5 datasheet download