SC1155, SC1155CSW, SC1155CSW.TR Selling Leads, Datasheet
MFG:N/A Package Cooled:SOP D/C:N/A
SC1155, SC1155CSW, SC1155CSW.TR Datasheet download
Part Number: SC1155
MFG: N/A
Package Cooled: SOP
D/C: N/A
SC1155, SC1155CSW, SC1155CSW.TR
- Table of contents:
Info of SC1155
Info of SC1155CSW
Info of SC1155CSW.TR
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About SC1155
PDF/DataSheet Download
Datasheet: SC1155
File Size: 194789 KB
Manufacturer: SEMTECH [Semtech Corporation]
Download : Click here to Download
About SC1155CSW
PDF/DataSheet Download
Datasheet: SC1155CSW
File Size: 194789 KB
Manufacturer: SEMTECH [Semtech Corporation]
Download : Click here to Download
About SC1155CSW.TR
PDF/DataSheet Download
Datasheet: SC1155CSW.TR
File Size: 194789 KB
Manufacturer: SEMTECH [Semtech Corporation]
Download : Click here to Download
SC1155 General Description
The SC1155 is a synchronous-buck switch-mode controller designed for use in single ended power supply applications where efficiency is the primary concern. The controller is a hysteretic type, with a user selectable hysteresis. The SC1155 is ideal for implementing DC/DC converters needed to power advanced microprocessors such as Pentium® llI and Athlon®, in both single and multiple processor configurations. Inhibit, under-voltage lockout and soft-start functions are included for controlled power-up.
SC1155 features include an integrated 5 bit D/A converter, temperature compensated voltage reference, current limit comparator, over-current protection, and an adaptive deadtime circuit to prevent shoot-through of the power MOSFET during switching transitions. Power good signaling, logic compatible shutdown, and over-voltage protection are also provided. The integrated D/A converter provides programmability of output voltage from 1.1V to 1.85V in 25mV increments.
The SC1155 high side driver can be configured as either a grounded reference or as a floating bootstrap driver. The high and low side MOSFET drivers have a peak current rating of 2 amps.
SC1155 Maximum Ratings
| Parameter | Symbol | Maximum | Units |
| VIN12V | VINMAX | 14 | V |
| BOOT to DRVGND | 25 | V | |
| BOOT to BOOTLO | 15 | V | |
| Digital Inputs | -0.3 to +7.3 | V | |
| AGND to DRVGND | + 0.5V | V | |
| LOHIB to AGND | 14 | V | |
| LOSENSE to AGND | 14 | V | |
| IOUTLO to AGND | 14 | V | |
| HISENSE to AGND | 14 | V | |
| VSENSE to AGND | 5 | V | |
| Continuous Power Dissipation, TA = 25°C | PD | 1.2 | W |
| Continuous Power Dissipation, TC = 25°C | PD | 6.25 | W |
| Operating Junction Temperature | TJ | 0 to +125 | °C |
| Lead Temperature (Soldering) 10 seconds | TL | 300 | °C |
| Storage Temperature | TSTG | -65 to 150 | °C |
SC1155 Features
•= Programmable hysteresis
•= 5 bit DAC programmable output (1.1V-1.85V)
•= On-chip power good and OVP functions
•= Designed to meet latest Intel specifications
•= Up to 95% efficiency
•= + 1% voltage tolerance over temperature
SC1155 Typical Application
•= Server Systems and Workstations
•= Intel Pentium® III Core Supplies
•= AMD Athlon® Core Supplies
•= Multiple Microprocessor Supplies
•= Voltage Regulator Modules
SC1155 Connection Diagram
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