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LTC3221EDC#TRMPBF

Description
Charge Pump STPUP 60mA 6-Pin DFN EP T/R
File Size374KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric View All

LTC3221EDC#TRMPBF Overview

Charge Pump STPUP 60mA 6-Pin DFN EP T/R

LTC3221EDC#TRMPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
FunctionStep Up
Output TypeAdjustable
Output Voltage (V)Adj
Minimum Operating Supply Voltage (V)1.8
Maximum Operating Supply Voltage (V)5.5
Maximum Supply Current (mA)0.012
Output Current (mA)60(Max)
Switching Frequency (kHz)600(Typ)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTape and Reel
Pin Count6
Standard Package NameDFN
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length2
Package Width2
PCB changed6
Lead ShapeNo Lead
LTC3221/
LTC3221-3.3/LTC3221-5
Micropower,
Regulated Charge Pump
in 2
×
2 DFN
FEATURES
DESCRIPTIO
Ultralow Power: 8µA Quiescent Current
Regulated Output Voltages: 3.3V ±4%, 5V ±4%, ADJ
V
IN
Range:
1.8V to 4.4V (LTC3221-3.3)
2.7V to 5.5V (LTC3221-5)
Output Current: Up to 60mA
No Inductors Needed
Very Low Shutdown Current: <1µA
Shutdown Disconnects Load from V
IN
Burst Mode Control
Short-Circuit Protected
Solution Profile < 1mm
Tiny 2mm
×
2mm 6-Pin DFN Package
The LTC
®
3221 family are micropower charge pump DC/DC
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 flying capacitor and two small bypass
capacitors at V
IN
and V
OUT
) make them ideally suited for
small, battery-powered applications.
The LTC3221 family includes fixed 5V and 3.3V output
versions plus an adjustable version. All parts operate
as Burst Mode
®
switched capacitor voltage doublers
to achieve ultralow quiescent current. The chips use a
controlled current to supply the output and will survive
a continuous short-circuit from V
OUT
to GND. The FB pin
of the adjustable LTC3221 can be used to program the
desired output voltage.
The LTC3221 family is available in a low profile (0.75mm)
2mm
×
2mm 6-pin DFN package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Burst
Mode is a registered trademark of Linear Technology Corporation. All other trademarks are
the property of their respective owners.
APPLICATIO S
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
TYPICAL APPLICATIO
1µF
2
C
5
V
IN
4,7
3
GND
SHDN
1
C
+
V
OUT
No-Load Input Current
vs Supply Voltage
16
NO-LOAD INPUT CURRENT (µA)
14
12
10
8
6
4
2
0
1.5
2.0
2.5
3.0
3.5
SUPPLY VOLTAGE (V)
4.0
4.5
T
A
= 90°C
T
A
= 25°C
T
A
= –45°C
V
IN
2.2µF
6
V
OUT
4.7µF
LTC3221-X
OFF ON
3221 TA01
REGULATED 3.3V OUTPUT FROM 1.8V TO 4.4V INPUT
V
OUT
= 3.3V
±4%
I
OUT
= OmA TO 25mA; V
IN
>1.8V
I
OUT
= OmA TO 60mA; V
IN
>2V
REGULATED 5V OUTPUT FROM 2.7V TO 5.5V INPUT
V
OUT
= 5V
±4%
I
OUT
= OmA TO 25mA; V
IN
>2.7V
I
OUT
= OmA TO 60mA; V
IN
>3V
U
3221 TA01b
U
U
3221f
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