Ultralow IQ Regulated 60mA Step Up Charge Pump in 2mm x 2mm DFN Package

News Release  www.linear.com
Ultralow IQ Regulated 60mA Step Up Charge Pump in
2mm x 2mm DFN Package
MILPITAS, CA – November 7, 2006 – Linear Technology Corporation announces the
LTC3221/-3.3/-5 regulated step up charge pumps offered in the compact 2mm x 2mm DFN
package. Featuring 60mA output current and Burst Mode® operation, the LTC3221 family
consumes an ultra-low quiescent current of 8uA, saving battery run time in portable device
applications. The LTC3221 has an adjustable output voltage and a wide input voltage range of
1.8V to 5.5V with a maximum output level not greater than twice the available input voltage.
The LTC3221-3.3 generates a regulated boosted output voltage of 3.3V from a minimum input
voltage of 1.8V, while the LTC3221-5 produces a 5V output from a minimum 2.7V input
voltage. The LTC3221 family’s combination of low quiescent current and regulated output make
them ideal for low power memory backup supplies, automotive sensors, RF transmitters and
handheld devices, in addition to general purpose 2 AA cell to 3.3V supply or Li-Ion/Polymer to
5V supply conversion.
The LTC3221/-3.3/-5’s high 600kHz switching frequency enables the use of tiny external
ceramic capacitors, saving space and cost. Low external parts count (one flying capacitor and
two bypass capacitors at VIN and VOUT) and the low-profile DFN package achieves an extremely
compact solution for space-constrained applications. Other features of the LTC3221/-3.3/-5
include load disconnect from the input during shutdown and short-circuit protection.
The LTC3221EDC, LTC3221EDC-3.3 and LTC3203EDC-5 are available in the lowprofile 6-lead DFN (2mm x 2mm x 0.75mm) package. Pricing starts at $1.60 each in 1,000-piece
quantities.
Ultralow IQ Regulated 60mA Step Up Charge Pump in
2mm x 2mm DFN Package
Page 2
Photo Caption: Ultra IQ Regulated 60mA Charge Pump
Summary of Features: LTC3221/-3.3/-5
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Ultralow Power: 8uA Quiescent Current
Regulated Ouptut Voltages: 3.3V ± 4%, 5V ± 4%, ADJ
Burst Mode Operation
Wide VIN Ranges:
- 1.8V to 5.5V for LTC3221
- 1.8V to 4.4V for LTC3221-3.3
- 2.7V to 5.5V for LTC3221-5
Output Current: up to 60mA
No Inductor
Low Shutdown Current <1uA
Shutdown Disconnects Load from VIN
Short Circuit Protected
Low Profile 6-Pin DFN (2mm x 2mm x 0.75mm) Package
About Linear Technology
Linear Technology Corporation, a manufacturer of high performance linear integrated circuits,
was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major
public companies in 2000. Linear Technology products include high performance amplifiers,
comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery
chargers, data converters, communications interface circuits, RF signal conditioning circuits, and
many other analog functions. Applications for Linear Technology’s high performance circuits
include telecommunications, cellular telephones, networking products such as optical switches,
notebook and desktop computers, computer peripherals, video/multimedia, industrial
instrumentation, security monitoring devices, high-end consumer products such as digital
cameras and MP3 players, complex medical devices, automotive electronics, factory automation,
process control, and military and space systems. For more information, visit www.linear.com
LT, LTC, LTM, Burst Mode and
are registered trademarks of Linear Technology Corp.
Press Contacts:
John Hamburger, Director Marketing Communications
[email protected]
Tel 408-432-1900 ext
Doug Dickinson, Media Relations Manager
[email protected]
408-432-1900