Linear launches low noise boost converters
Linear Technology
LT3495/-1
Linear Technology has released the LT3495/-1 low noise boost converters with integrated power switches, Schottky diodes and output disconnect circuitry.
The LT3495 uses a 650mA switch, whereas the LT3495-1 uses a 350mA switch.
Both parts are packaged in a 2mm x 3mm DFN-10 package.
Their 2.3V 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 LT3495 can deliver over 70mA of output current at 16V from a single Li-ion cell, making it suitable for applications such as OLED displays.
Both parts use a control technique that delivers high efficiency and low output ripple over a wide load current range.
This technique guarantees that the switching frequency stays above the audio band for the entire load range, making it suitable for noise-sensitive PMP and audio applications.
The LT3495's NPN switch achieves a VCESAT of 250mV at 500mA and offers efficiencies as high as 85 per cent.
The device's 60uA of quiescent current (<1uA in shutdown) maximises battery run time, while integrated Schottky diodes and output disconnect circuitry minimises external circuitry.
An integrated dimming/contrast adjustment function is included for display applications.
For applications requiring output voltages below 10V, there are also 'B' versions of this device, the LT3495B and LT3495B-1, which offer slightly higher light load efficiency.
The LT3495EDDB, LT3495EDDB-1, LT3495BEDDB and LT3495BEDDB-1 are all available from stock in a 10-lead 2mm x 3mm DFN package.
Related images
Request more information
More stories
Data sheet: LTC3617 monolithic synchronous buck regulator from Linear Technologydownload
The LTC3617 from Linear Technology is a high-efficiency monolithic synchronous buck regulator that utilises a current-mode, constant-frequency architecture.
Linear Technology offers DC/DC controller suitable for sectors such as automotiveweblink
The LT3759 DC/DC controller from Linear Technology — which can generate negative or positive output voltages — is suitable for boost, SEPIC and inverting supply applications within sectors such as industrial, automotive, medical and telecom.
Data sheet: LT3759 current-mode DC/DC controller from Linear Technologydownload
The LT3759 from Linear Technology is a current-mode DC/DC controller that is capable of regulating either positive or negative output voltages from a single feedback pin. It can be configured as a boost, SEPIC or inverting converter.
Linear Technology offers frequency synthesiser for applications such as avionicsweblink
The LTC6946 frequency synthesiser from Linear Technology is suitable for improving the performance of multiband basestations that support LTE, W-CDMA, UMTS, CDMA, GSM and WiMAX standards — as well as point-to-point broadband wireless access, military, avionics, and high-performance test and measurement applications.
Data sheet: LTC6946 integer-N synthesiser with integrated VCO from Linear Technologydownload
The LTC6946 from Linear Technology is a low-noise 5.7GHz phase-locked loop (PLL) with a fully integrated VCO, including a reference divider, a phase-frequency detector with phase-lock indicator, an ultra-low-noise charge pump, an integer feedback divider and a VCO output divider. The charge pump contains selectable high- and low-voltage clamps that are useful for VCO monitoring.
