 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
3507 Datasheet(PDF) 1 Page - Linear Technology |
|
|
|||||||||||||||||||||||||||||
3507 Datasheet(HTML) 1 Page - Linear Technology |
|
|
1 / 28 page  LT3507 1 3507f FEATURES APPLICATIONS DESCRIPTION Triple Monolithic Step-Down Regulator with LDO The LT®3507 is a triple, current mode, DC/DC converter with internal power switches and a low dropout regulator. The switching converters are step-down converters capable of generating one 2.4A output and two 1.5A outputs. All three converters are synchronized to a single oscillator. The 2.4A output runs with opposite phase to the other two converters, reducing input ripple current. Each regulator has independent shutdown and soft-start circuits, and generates a power good signal when its output is in regu- lation, easing power supply sequencing and interfacing with microcontrollers and DSPs. The switching frequency is set with a single resistor yielding a range of 250kHz to 2.5MHz. The high switching frequency allows the use of small inductors and capacitors resulting in a very small triple output supply. The constant switching frequency, combined with low impedance ceramic capaci- tors, results in low, predictable output ripple. With its wide input voltage range of 4V to 36V, the LT3507 regulates a broad array of power sources including 5V logic rails, unregulated wall transformers, lead acid batteries and distributed power supplies. n Wide Input Range: 4V to 36V n One 2.4A and Two 1.5A Output Switching Regulators with Internal Power Switches n Low Dropout Linear Regulator with External Transistor n Antiphase Switching Reduces Ripple n Independent Run, Tracking/Soft-Start, and Power Good Indicators Ease Supply Sequencing n Uses Small Inductors and Ceramic Capacitors n Adjustable, 250kHz to 2.5MHz Switching Frequency, Synchronizable Over the Full Range n User Programmable Overvoltage and Undervoltage Lockouts n Thermally Enhanced, 38-Lead 5mm × 7mm QFN Package n DSL and Cable Modems n Distributed Power Regulation n DSP Power n Automotive TYPICAL APPLICATION L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. VIN1 BOOST1 BOOST3 SW3 FB3 VC3 BIAS DRIVE FB4 SW1 FB1 VC1 BOOST2 0.22μF 10.2k 53.6k VIN 6V TO 36V VOUT3 5V 1.5A VIN2 VIN3 SW2 FB2 VC2 GND LT3507 22μF 24.3k 3507 TA01a 107k 11.5k VOUT2 3.3V 1.3A VOUT4 2.5V 0.2A RT/SYNC 680pF 15μH 2.2μF 22μF fSW = 450kHz 0.22μF 0.22μF 15k 18.7k VOUT1 1.8V 2.4A 100μF 18.7k 680pF 4.7μH 24.3k 1000pF 16.2k 11.5k 35.7k 10μH 22μF VOUT2 Start-Up Waveforms—Coincident Tracking 5V, 3.3V, 2.5V and 1.8V Step-Down Regulator 1V/DIV VOUT1 VOUT2 VOUT3 VOUT4 1ms/DIV 3507 TA01b |
Similar Part No. - 3507 |
|
Similar Description - 3507 |
|
|
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
