DC to DC Power Supplies (Converters)
Power Boost Converters require only 8.5 µA quiescent current.
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Press Release Summary:
Models LT8410/-1 low-noise micropower boost converters with integrated power switches, Schottky and catch diodes, and output disconnect circuitry are housed 2 x 2 mm DFN package. Integrated high value (12.4M/0.4M) output feedback divider resistors enable device to regulate 16 V output with no load with less than 30 µA of quiescent current. Wide 2.6-16 V input range enables them to operate from single cell Li-Ion batteries up to fixed 12 V input rails, delivering outputs up to 40 V.
Original Press Release:
Ultralow Power Boost Converters Only Require 8.5 µA of Quiescent Current
MILPITAS, CA - November 5, 2008 - Linear Technology announces the LT8410/-1 low noise micropower boost converters with integrated power switches, Schottky and catch diodes and output disconnect circuitry packaged in a 2mm x 2mm DFN package. The LT8410/-1 use a unique design scheme, requiring only 8.5 µA of quiescent, which is further reduced to 0 µA in shutdown. Integrated high value (12.4M/0.4M) output feedback divider resistors enable the LT8410/-1 to regulate a 16V output with no load with less than 30 µA of quiescent current. Very small switch current limits (25mA for the LT8410 and 8mA for the LT8410-1) enable these converters to operate very efficiently from high impedance sources, such as coin cell batteries without any inrush current limitations.
The LT8410/-1's wide 2.6V to 16V input voltage range enables them to operate from single cell Li-Ion batteries up to fixed 12V input rails, delivering outputs up to 40V. The output voltage can be adjusted dynamically by driving the FBP pin with an external voltage source. The LT8410 can deliver over 8mA of output current at 16V from a single Li-Ion cell making it ideal for applications such as precision sensor or biasing power. Both parts use a unique control technique that delivers efficiencies as high as 88% and low output ripple (<10mVPK-PK) over a wide load current range. Other features include integrated soft-start and overvoltage protection. The combination of the LT8410/-1's 2mm x 2mm DFN package and tiny, low cost ceramic capacitors and inductors provides a very compact solution footprint.
The LT8410EDC and LT8410EDC-1 are both available from stock in an 8-lead 2mm x 2mm DFN package. Pricing starts at $1.75 each for 1,000-piece quantities.
Summary of Features: LT8410/-1
Ultralow Quiescent Current: 8.5 µA in Active Mode, 0 µA in Shutdown Mode
Comparator Built into SHDN pin
Low Noise Control Scheme
Adjustable FB Reference Voltage
Wide Input Range: 2.6V to 16V
Wide Output Range : Up to 40V
Integrated Power NPN Switch
25mA Current Limit (LT8410)
8mA Current Limit (LT8410-1)
Integrated Schottky Diode
Integrated Output Disconnect
High Value (12.4M/0.4M) Feedback Resistors Integrated
Built in Soft-Start (Optional Capacitor from VREF to GND)
Overvoltage Protection for CAP and VOUT PVS
Tiny 8-Pin 2mm x 2mm DFN 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, uModule(TM) products, 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 and LTM are registered trademarks and uModule is a trademark of Linear Technology Corp. All other trademarks are the property of their respective owners.
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