 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LTM4614EV Datasheet(PDF) 8 Page - Linear Technology |
|
||||||||||||||||||||||||||||||
LTM4614EV Datasheet(HTML) 8 Page - Linear Technology |
|
|
8 / 20 page  LTM4614 8 4614fa OPERATION LTM4614 POWER MODULE DESCRIPTION The LTM4614 is a standalone dual nonisolated switching mode DC/DC power supply. It can deliver up to 4A of DC output current for each channel with few external input and output capacitors. This module provides two precisely regulated output voltages programmable via one external resistor for each channel from 0.8V DC to 5V DC over a 2.375V to 5.5V input voltage. The typical application schematic is shown in Figure 12. The LTM4614 has two integrated constant frequency cur- rent mode regulators, with built-in power MOSFETs with fast switching speed. The typical switching frequency is 1.25MHz. With current mode control and internal feedback loop compensation, these switching regulators have suf- ficient stability margins and good transient performance under a wide range of operating conditions, and with a wide range of output capacitors, even all ceramic output capacitors. Current mode control provides cycle-by-cycle fast cur- rent limit. Besides, current limiting is provided in an overcurrent condition with thermal shutdown. In addition, internal overvoltage and undervoltage comparators pull the open-drain PGOOD outputs low if the particular output feedback voltage exits a ±7.5% window around the regu- lation point. Furthermore, in an overvoltage condition, internal top FET, M1, is turned off and bottom FET, M2, is turned on and held on until the overvoltage condition clears, or current limit is exceeded. Pulling each specific RUN pin below 0.8V forces the spe- cific regulator controller into its shutdown state, turning off both M1 and M2 for each power stage. At low load current, each regulator works in continuous current mode by default to achieve minimum output voltage ripple. The TRACK/SS pins are used for power supply tracking and soft-start programming for each specific regulator. See Applications Information section. The LTM4614 is internally compensated to be stable over the operating conditions. Table 4 provides a guideline for input and output capacitance for several operating condi- tions. The Linear Technology μModule Power Design Tool will be provided for transient and stability analysis. The FB pins are used to program the specific output volt- age with a single resistor to ground. |
Similar Part No. - LTM4614EV |
|
Similar Description - LTM4614EV |
|
|
|
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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
