LTC3204 - Fixed 3.3V and 5V Low Noise Regulated Charge Pump Doubler in 2mm x 2mm DFN Package

LTC News for Immediate Release
For more information, tel. 408-432-1900
Doug Dickinson, Media Relations Mgr., ext. 2233
www.linear.com
Fixed 3.3V and 5V Low Noise Regulated
Charge Pump Doubler in 2mm x 2mm DFN Package
MILPITAS, CA – January 31, 2005 – Linear Technology Corporation announces the
LTC3204 charge pump doubler in the 2mm x 2mm DFN package. Featuring low-noise
constant-frequency (1.2MHz) operation, the LTC3204-3.3 generates a regulated boosted
output voltage of 3.3V from a minimum input voltage of 1.8V (2 AA cell alkaline or
NiMH) at output currents up to 50mA, while the LTC3204-5 produces 5V output from a
minimum 2.7V (Li-Ion battery) input at currents up to 150mA.
The LTC3204 features automatic Burst Mode® operation at light loads, which
provides a low supply current of 48uA and helps extend battery run time. A patented
constant-frequency architecture offers both low input and low output ripple to minimize
switching noise. Other features include automatic soft start circuitry to prevent excessive
inrush current during startup, load disconnect from the input during shutdown, plus current
limit and thermal shutdown circuitry.
The LTC3204’s high 1.2MHz switching frequency enables the use of tiny external
ceramic capacitors, saving size and cost. Low external parts count of one flying capacitor
and two bypass capacitors, in addition to the low profile DFN package make the LTC3204
an extremely compact solution for space-constrained applications.
The LTC3204EDC-3.3 and LTC3204EDC-5 are available in the 6-lead DFN
(2mm x 2mm x 0.75mm) package. 1,000-piece pricing starts at $1.50 each.
(more...)
Fixed 3.3V and 5V Low Noise Regulated
Charge Pump Doubler in 2mm x 2mm DFN Package
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Summary of Features: LTC3204
• Fixed Outputs:
- 3.3V for LTC3204-3.3
- 5V for LTC3204-5
• Output Currents:
- 50mA for LTC3204-3.3
- 150mA for LTC3204-5
• Wide VIN Ranges:
- 1.8V to 4.5V for LTC3204-3.3
- 2.7V to 5.5V for LTC3204-5
• Automatic Burst Mode Operation with IQ=48uA
• Low Noise Constant Frequency (1.2MHz) Operation
• Low Input and Output Ripple
• Automatic Soft-Start Limits Inrush Current
• Low Shutdown Current <1uA
• 6-Pin DFN (2mm x 2mm x 0.75mm) Package
COMPANY BACKGROUND: Linear Technology Corporation was founded in 1981 as a
manufacturer of high performance linear integrated circuits. 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, contact:
Doug Dickinson, Media Relations Manager
Linear Technology Corporation
1630 McCarthy Boulevard
Milpitas, CA 95035-7417
[email protected]
408-432-1900
READER SERVICE: Call toll-free 1-800-4-LINEAR (for literature only), or go to the
company’s web site: http://www.linear.com
Note: LT, LTC, Burst Mode and
are registered trademarks of Linear Technology Corp.
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