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SC1176TS.TR, SC1182, SC1182BCSW

Table of contents:
Info of SC1176TS.TR
Info of SC1182
Info of SC1182BCSW

SC1176TS.TR, SC1182, SC1182BCSW Selling Leads, Datasheet

MFG:SEMTECH Package Cooled:TSSOP20 D/C:02+

SC1176TS.TR, SC1182, SC1182BCSW Datasheet download

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Part Number: SC1176TS.TR

MFG: SEMTECH

Package Cooled: TSSOP20

D/C: 02+

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SC1182 General Description

The SC1182/3 combines a synchronous voltage mode controller with two low-dropout linear regulators providing most of the circuitry necessary to implement three DC/DC converters for powering advanced microprocessors such as Pentium^®II (Klamath) or Deschutes.

The SC1182/3 switching section features an integrated 5 bit D/A converter, pulse by pulse current limiting, integrated power good signaling, and logic compatible shutdown. The SC1182/3 switching section operates at a fixed frequency of 200kHz, providing an optimum compromise between size, efficiency and cost in the intended application areas. The integrated D/A converter provides programmability of output voltage from 2.0V to 3.5V in 100mV increments and 1.30V to 2.05V in 50mV increments with no external components.

The SC1182/3 linear sections are low dropout regulators. The SC1182 supplies 1.5V for GTL bus and 2.5V for non-GTL I/O.

SC1182 Maximum Ratings

Parameter	Symbol	Maximum	Units
V_CCto GND	V_IN	-0.3 to +7	V
PGND to GND		± 1	V
BST to GND		-0.3 to +15	V
Operating Temperature Range	T_A	0 to +70	°C
Junction Temperature Range	T_J	0 to +125	°C
Storage Temperature Range	T_STG	-65 to +150	°C
Lead Temperature (Soldering) 10 seconds	T_L	300	°C
Thermal Impedance Junction to Ambient	_{_{_JA}}	80	°C/W
Thermal Impedance Junction to Case	_{_JC}	25	°C/W

SC1182 Features

· Synchronous design, enables no heatsink solution
· 95% efficiency (switching section)
· 5 bit DAC for output programmability
· On chip power good function
· Designed for Intel Pentium^® ll VRM8.1 requirements
· 1.5V, 2.5V or Adj. @ 1% for linear section

SC1182 Typical Application

· Pentium^® ll or Deschutes microprocessor supplies
· Flexible motherboards
· 1.3V to 3.5V microprocessor supplies
· Programmable triple power supplies

SC1182 Connection Diagram

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