DC to DC Power Supplies (Converters)
DC/DC Converter suits space-constrained applications.
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Press Release Summary:
Model LT3436 is a 3 A, 800 kHz step-up converter in thermally-enhanced, 16-pin TSSOP package. Input voltage of 3-25 V enables unit to operate from single cell Li-Ion batteries up to fixed 24 V input rails, delivering outputs up to 35 V. Constant 800 kHz switching frequency, synchronizable from 1-1.4 MHz, allows designers to keep switching noise out of noise-sensitive circuitry. Operating supply current of 0.9 mA maintains efficiency at light loads.
Original Press Release:
35V, 3A Boost Regulator Offers Big Power in a Tiny Package
MILPITAS, CA - January 19, 2004 - Linear Technology announces the LT3436, a 3A, 800kHz step-up DC/DC converter in a thermally enhanced 16-pin TSSOP package. Its wide 3V to 25V input voltage range enables the LT3436 to operate from single cell Li-Ion batteries up to fixed 24V input rails, delivering outputs up to 35V. Its constant 800kHz switching frequency (synchronizable fro 1MHz to 1.4MHz) allows designers to keep switching noise out of noise-sensitive circuitry and enables the use of tiny capacitors and inductors. The combination of the LT3436's high efficiency switch and thermally enhanced package provides high current boost capability in a very compact form factor, making it ideal for space-constrained applications.
The LT3436 utilizes an on-chip, high efficiency 0.1Ù, 3A switch includes all of the control circuitry required to complete an 800kHz, constant frequency, current mode switching regulator. Current mode control provides both fast transient response and excellent loop stability. Proprietary design techniques enable high efficiencies at high switching frequencies over a wide range of inputs, from Li-Ion batteries to 24V distributed buses. Maximum switch current remains constant at all duty cycles while synchronization allows an external logic level signal to increase the internal oscillator frequency from 1MHz to 1.4MHz. An operating supply current of 0.9mA maintains high efficiency even at light loads, while the 6uA shutdown current ensures extended battery life.
The LT3436EFE is available from stock in a thermally enhanced 16-lead TSSOP package. Pricing starts at $2.75 each for 1,000-piece quantities.
Summary of Features: LT3436
VIN Range of 3V to 25V, VOUT up to 35V
3A, 0.1Ù High Efficiency Switch
Constant 800kHz Switching Frequency
2% Overall Output Voltage Tolerance
Constant Maximum Switch Current Limit at All Duty Cycles
Low Supply Current: 0.9mA, 6uA in Shutdown
Synchronizable from 1MHz to 1.4MHz
Thermally Enhanced TSSOP-16E Package
Company Background
Linear Technology Corporation was founded in 1981 as a manufacturer of high performance linear integrated circuits. Linear Technology products include operational, instrumentation and audio amplifiers; voltage regulators, power management devices, DC-DC converters and voltage references; comparators; monolithic filters; communications interface circuits; one-chip data acquisition sub-systems; pulse-width modulators and sample-and-hold devices; and high frequency devices. Applications for Linear Technology's high performance circuits include wireless and broadband telecommunications infrastructure, cellular telephones, networking products and satellite systems, notebook and desk top computers, computer peripherals, video/multimedia, industrial and medical instrumentation, automotive electronics, factory automation, process control, military and space systems, and high-end consumer products including digital cameras, MP3 players and other electronic products.
