#move ahead simultaneously

Characteristic summary: LTC3568 High-frequency to work: Up to 4MHz High efficiency: Up to 96% VIN range: From 2.5V to 5.5V Output voltage from 0.8V to 5V Low quiescent current: 60uA; Shut down in the electric current: IQ is less than or equal to 1uA The mode work of the electric current realizes remarkable voltage and load transient response Short circuit protection The work of Low Dropout: 100% of the duty ratios Low RDS (ON) Internal switch: 0.110Ω Available burst mode job It is very steady to use the ceramic capacitor Can move ahead simultaneously to the external clock Dainty 3mm x 3mm, 10 lead wire DFN are capsulated

Insult the special company (Linear Technology) The steady voltage of the switch of introducing the quarter-phase, double-output used for terminal application of DDR/QDR memorizer and stepping down synchronously controls the device LTC3776. Second output (VTT) of this control device Can voltage stabilization here output its 1/2 VREF (usually VDDQ) ,Can offer or absorb the output current symmetrically at the same time. LTC3776 adopt from 2.75V to the intersection of 9.8V and input, can in need outside any bias under the situation adopting the intersection of 3.3V and the intersection of input voltage and rail work. There is no sense resistor (No RSENSETM) , invariable frequency, electric current mode framework have avoided the need of setting up the sense resistor, and raised the efficiency. It is reduced to the maximum extent that two control devices worked out-of-phase because input power consumption and switching noise that the electric capacity ESR causes. The switching frequency of LTC3776 is programmable to reach 750kHz high, allow to use small surface mounted inductor and capacitor. In terms of sensitive application of the noise, the switching frequency of LTC3776 can be realized by phase locked loop circuit and in pace with external frequency, the frequency domain is from 250kHz to 850kHz, or start the work pattern of spread spectrum. Force to work and can reduce noise and RF to interfere with too continuously. The soft turn on used in VDDQ offers from inside, extendible to use the external capacitor too. Other characteristics also include undervoltage lower the good output voltage monitor of 100% of the duty ratio work, power and export pressing to protect etc.. Adopt LTC3776EUF and LTC3776EGN capsulated in capsulation and SSOP-24 of 4mm x 4mm QFN-24 to supply from stock separately. Regard 1,000 as the unit to buy in batches, each slice of trigger price of LTC3776EUF and LTC3776EGN is 3.75 dollars. Characteristic summary: LTC3776 " Do not need the sense resistor of electric current " The out-of-phase control device reduces the required input capacitance " VOUT2 tracing 1/2 VREF " Symmetric offering / ability of absorbing the output current ( VOUT2) " Spread spectrum works ' Can enable for hour) " Width VIN range: From 2.75V to 9.8V " The invariable frequency electric current mode works " 0.6V ± 1.5% voltage reference (VOUT1) " Low pressure drop job: 100% of the duty ratios " Real PLL used for frequcncy lock or adjustment

Insult the special company (Linear Technology) Introduce the large voltage stepping down type of the electric current mode and control the device LT3800, this device has remarkable voltage and load regulating and fast transient response function, do not need auxiliary DC/DC stabilizator and work while starting. An Integrated stabilizator supplies power to IC from inputting the power directly. LT3800 adopts the power of 4V to 60V to work, it is high while reaching 10A in the load current the adjustable output voltage is here from 1.23V to 36V. Through the highest bar source" ON" The voltage drives the nchannel MOSFET synchronously, it is up to 94% that this control device is with high efficiency, and can input 60V to convert to exporting 12V of 36W at the same time. In addition, LT3800 also has burst modes (Burst Mode) Work, can drop the non-loaded quiescent current to low in 100uA, and the vehicle maintenance power generally needs this characteristic. LT3800 is applicable in 2V and 42V car system, 48V telecommunication equipment power, avionic equipment and industrial control system. LT3800 work is in 200kHz fixed frequency. This device utilizes reverse current to forbid the function in order to raise the efficiency at the time of the light load. If the electric current of the inductor is close to zero, this function can forbid the synchro switch to work. Another function of LT3800 is that the adaptation is not an overlap control. Only if the overlap control can keep an invariable Dead Time, thus prevent connecting the switched current, not influenced by type, size or work environment of the outside MOSFET switch. LT3800 adopts 16 pins heat-resisting strengthening TSSOP to capsulate, the specified operating temperature is - from 40oC to 125oC. Regard 1,000 as the unit to buy in batches, the trigger price is 3.10 dollars. Characteristic summary: LT3800 " From 4V to the wide input voltage range of 60V " The output voltage is up to 36V " The adaptation is not that the superposed circuit prevents the switch from connecting " Efficiency when the reverse inductor current characteristic of prohibition of interrupted duty can raise the light load " 100uA non-loaded quiescent current " 200kHz operating frequency

Insult the special company (Linear Technology) Put out and adopt the invariable frequency the stepping down steady transformer LTC3418 simultaneously with high efficiency 4MHz of framework of the electric current mode. It adopts 5mm x 7mm QFN to capsulate, can offer the high lasting output current up to 8A when the voltage is low to 0.8V. This device works in the input voltage of 2.25V to 5.5V, very suitable for monomeric lithium battery or nickel-hydrogen metal battery employing and more common ones from 2.5V to the rail system of 5V fixed voltage. Its 4MHz switching frequency allows to utilize highly low low-cost capacitors and inductors in 1.5mm. High frequency can also keep the switching noise lying in the frequency domain of wireless and xDSL of the key while working, make it become xDSL modem, base station of the honeycomb and applied ideal choice of the car. LTC3418 adopts RDS (ON) It is only the internal switch of 0.035, reaches 95% of the efficiency high, adopt undervoltage to be lack of 100% of the duty ratio work at the same time, allow the output voltage to equal VIN. There is this device on slice tracing is input, it is very apt to realize the power is arranged in an order. The non-loaded quiescent current is only 380uA, low in 1uA while closing, it is car power system which needs low spare electric current,etc. that is chosen applied and ideally. To the sensitive application of the noise, SYNC/MODE pin returns configurated into the pulse and jumps or forces to work continuously, interfere with in order to lighten noise and RF. Other characteristics include the power is good (Power Good) Voltage monitor, synchronous ability and overheat protective of external frequency. The application that LTC3418 is the governing factor to application and small solution size and high efficiency which needed 8A output current has offered the optimal solution. Adopt LTC3418 that 38 lead wire 5mm x 7mm QFN capsulates to supply from stock. Regard 1,000 as the unit to buy in batches, each slice of trigger price is 6.75 dollars. Characteristic summary: LTC3418 " High efficiency: Up to 95%" IOUT is up to 8A" VIN range is From 2.25V to 5.5V " VOUT range is 0.8V - VIN" It makes the power very easy to realize to arrange in an order that tracing is input " Programmable invariable frequency work: From 300kHz to 4MHz " 1% of the accuracy grade of output voltage of ± " The work of Low Dropout: 100% of the duty ratios " The good output voltage monitor of the power " Overheat protective " 5mm x 7mm QFN-38 capsulates

MAX7461 adopts space saving 3mm x 3mm, 5 pins SOT23 to capsulate, the area is only 1/3 of the existing products, this chip works in one grade of temperature ranges expanding (- 45 ℃ to +85 ℃) . Maxim telephone number of the company: 010-62115199,Fax: 010-62115299,Website: http://www.maxim-ic.com.

LTC3822 adopts 10 lead wire MSOP and minor 3mm x 3mm DFN to capsulate. Its specified operating temperature range is - 40 ℃ to 85 ℃.