Electronic Components Datasheet Search |
|
LTC1649CS Datasheet(PDF) 1 Page - Linear Technology |
|
LTC1649CS Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page 1 LTC1649 3.3V Input High Power Step-Down Switching Regulator Controller s High Power 3.3V to 1.xV-2.xV Switching Regulator Controller: Up to 20A Output s All N-Channel External MOSFETs s Provides 5V MOSFET Gate Drive with 3.3V Input s Excellent Output Regulation: ±1% Over Line, Load and Temperature Variations s Constant Frequency Operation Minimizes Inductor Size s High Efficiency: Over 90% Possible s No Low-Value Sense Resistor Needed s Available in 16-Lead SO Package s 3.3V Input Power Supply for Low Voltage Microprocessors and Logic s Low Input Voltage Power Supplies s High Power, Low Voltage Regulators s Local Regulation for Multiple Voltage Distributed Power Systems , LTC and LT are registered trademarks of Linear Technology Corporation. The LTC ®1649 is a high power, high efficiency switching regulator controller optimized for use with very low supply voltages. It operates from 2.7V to 5V input, and provides a regulated output voltage from 1.26V to 2.5V at up to 20A load current. A typical 3.3V to 2.5V application features efficiency above 90% from 1A to 10A load. The LTC1649 uses a pair of standard 5V logic-level N-channel external MOSFETs, eliminating the need for expensive P-channel or super-low-threshold devices. The LTC1649 shares its internal switching architecture with the LTC1430, and features the same ±1% line, load and temperature regulation characteristics. Current limit is user-adjustable without requiring an external low-value sense resistor. The LTC1649 uses a 200kHz switching frequency and voltage mode control, minimizing external component count and size. Shutdown mode drops the quiescent current to below 10 µA. The LTC1649 is available in the 16-pin narrow SO package. VCC VOUT 2.5V @15A IMAX SHDN 1 µF G2 FB VIN VIN 3.3V C+ LTC1649 PVCC2 PVCC1 G1 IFB COMP SS C– GND CPOUT 1 µF 10 µF MBR0530 0.1 µF CC 0.01 µF IRF7801 = INTERNATIONAL RECTIFIER MBR0530 = MOTOROLA *12TS-1R2HL = PANASONIC RC 7.5k LEXT* 1.2 µH C1 220pF 10 µF MBR0530 RIMAX 50k 22 Ω 1k Q3 IRF7801 Q1, Q2 IRF7801 TWO IN PARALLEL COUT 4400 µF CIN 3300 µF SHDN R2 12.7k R1 12.4k 1649 TA01 + 0.33 µF + + + 3.3V to 2.5V, 15A Converter LTC1649 Efficiency LOAD CURRENT (A) 1649 TA02 0.1 1 10 100 90 80 70 60 50 40 APPLICATIO S FEATURES TYPICAL APPLICATIO DESCRIPTIO |
Similar Part No. - LTC1649CS |
|
Similar Description - LTC1649CS |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | 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 |