 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LTC3402 Datasheet(PDF) 1 Page - Linear Technology |
|
|
|||||||||||||||||||||||||||||
LTC3402 Datasheet(HTML) 1 Page - Linear Technology |
|
|
1 / 16 page  1 LTC3402 3402fb 2A, 3MHz Micropower Synchronous Boost Converter The LTC ®3402 is a high efficiency, fixed frequency, step- up DC/DC converter that operates from an input voltage below 1V. The device includes a 0.16 ΩN-channelMOSFET switch and a 0.18 Ω P-channel synchronous rectifier. Switching frequencies up to 3MHz are programmed with an external timing resistor and the oscillator can be synchronized to an external clock. An external Schottky diode is optional but will slightly improve efficiency. Quiescent current is only 38 μA in Burst Mode operation, maximizing battery life in portable applications. Burst Mode operation is user controlled and can be enabled by driving the MODE/SYNC pin high. If the MODE/SYNC pin has either a clock or is driven low, then fixed frequency switching is enabled. Other features include a 1 μA shutdown, antiringing con- trol, open-drain power good output, thermal shutdown and current limit. The LTC3402 is available in the 10-lead thermally enhanced MSOP package. Lower current appli- cations should use the 1A rated LTC3401 synchronous boost converter. Applications that require VOUT < 2.6V should use the LTC3424. All Ceramic Capacitor 2-Cell to 3.3V at 1A Step-Up Converter ■ Cellular Telephones ■ Handheld Computers ■ MP3 Players ■ 2-Way Pagers ■ GPS Receivers ■ Battery Backup Supplies ■ CCFL Backlights ■ Synchronous Rectification: Up to 97% Efficiency ■ 2A Switch Current Rating ■ Fixed Frequency Operation Up to 3MHz ■ Wide Input Range: 0.5V to 5V ■ Very Low Quiescent Current: 38 μA (Burst Mode® Operation) ■ 2.6V to 5.5V Adjustable Output Voltage ■ 0.85V (Typ) Start-Up Voltage ■ No External Schottky Diode Required (VOUT < 4.3V) ■ Synchronizable Switching Frequency ■ Burst Mode Enable Control ■ Antiringing Control Reduces Switching Noise ■ PGOOD Output ■ OPTI-LOOP ® Compensation ■ Very Low Shutdown Current: < 1 μA ■ Small 10-Pin MSOP Package Burst Mode and OPTI-LOOP are registered trademarks of Linear Technology Corporation. IOUT (mA) 0.1 0 10 30 40 50 100 70 3402 TA02 20 80 90 60 110 100 1000 Burst Mode OPERATION 1MHz CONSTANT FREQUENCY VIN = 2.4V WITH SCHOTTKY Efficiency FEATURES DESCRIPTIO APPLICATIO S TYPICAL APPLICATIO 3 10 2 6 1 3402 TA01 LTC3402 VIN SHDN MODE/SYNC PGOOD Rt SW VOUT FB VC GND 4 7 8 9 5 C3 470pF C4 4.7pF 2 CELLS C1 10 μF R5 82k Rt 30.1k R2 909k R1 549k VOUT 3.3V 1A L1 2.2 μH C2 44 μF (2 × 22μF) C1: TAIYO YUDEN JMK212BJ106MG C2: TAIYO YUDEN JMK325BJ226MM L1: COILCRAFT: D03316P-222 VIN = 1.8V to 3V 0 = FIXED FREQ 1 = Burst Mode OPERATION + , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. |
Similar Part No. - LTC3402 |
|
Similar Description - LTC3402 |
|
|
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
