 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
SC1544 Datasheet(PDF) 1 Page - Semtech Corporation |
|
|
|||||||||||||||||||||||||||||
SC1544 Datasheet(HTML) 1 Page - Semtech Corporation |
|
|
1 / 15 page  POWER MANAGEMENT 1 www.semtech.com SC1544 ACPI Controller for Advanced Motherboards PRELIMINARY .eatures Revision 3, May 2002 Description Semtechs SC1544, SC243x and SC1112A or SC1114 provide all the voltages necessary for an ACPI system. The SC1544 offers five independant supplies: a 5V dual supply for USB, a 3.3V dual supply for PCI, a 3.3V or 2.5V dual supply for memory, a 1.5V or 3.3V supply for AGP and a 1.8V supply. The AGP supply is programmble using the system TYPEDET signal. An on-board internal charge pump eliminates the need for P-channel MOS.ETs and enables function from a single 5V supply (system 5VSB). All dual outputs are over current protected. The SC1544 differs from the SC1547 in three important ways: 1) the device initially starts up in S5, and not G0 like the SC1547; 2) the gate drives for the 1.8V and AGP outputs are always high in normal operation; 3) no OCP on the 1.8V and AGP outputs. K Instantly available motherboards K Complete programmable supply for instantly available PC systems K Supports 2.5V memory or 3.3V memory (-2.5 or -3.3 option in part number) K 5V dual and 3.3V dual supplies are programmable to be active or inactive in S5 K Integrated AGP voltage supply with TYPEDET signal for 3.3V or 1.5V operation K Integrated LDO for 1.8V supply K Integrated charge pump removes the need for PMOS .ETs, enables single supply operation K Over current protection on all dual outputs K Inherent soft-start capability K TSSOP-24 package Typical Application Circuit Applications Q6 IRLR3103 Q7 IRLR3103 Q8 IRLR3103 C11 1uF C1 100uF/6.3V PCI GND 5V DUAL Q5 IRLR3103 5VSB 3.3V DUAL MEM 3.3V DUAL GND EN GND C5 100uF/6.3V C7 100uF/6.3V /SLP_S3 C10 0.1uF 5V GND GND USB 3.3V C3 100uF/6.3V Q4 IRLR3103 C2 100uF/6.3V /SLP_S5 GND Q3 IRLR3103 TYPEDET C8 100uF/6.3V GND C 9 0.01uF AGP PWR_OK Q2 IRLR3103 GND U 1 SC1544-3.3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 G5 3.3VDM G6 G7 AGP TYPEDET PWR_OK EN /S3 /S5 USB P C I -CAP +CAP FC 5VSB 5VD G1 G2/3 GND 3.3VD G4 1.8V G8 Q1 IRLR3103 1.8V C4 100uF/6.3V C6 100uF/6.3V |
Similar Part No. - SC1544 |
|
Similar Description - SC1544 |
|
|
|
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
