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SC1159TS, SC1161CS, SC1164

Table of contents:
Info of SC1159TS
Info of SC1161CS
Info of SC1164

SC1159TS, SC1161CS, SC1164 Selling Leads, Datasheet

MFG:SEMTECH Package Cooled:02+ D/C:06+

SC1159TS, SC1161CS, SC1164 Datasheet download

Five Points

Part Number: SC1159TS

MFG: SEMTECH

Package Cooled: 02+

D/C: 06+

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SC1164 General Description

The SC1164/5 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.

The SC1164/5 switching section features an integrated 5 bit D/A converter, pulse by pulse current limiting, integrated power good signaling, and logic compatible shutdown. The SC1164/5 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 SC1164/5 linear sections are low dropout regulators. The SC1164 supplies 1.5V for GTL bus and 2.5V for non-GTL I/O.

For the SC1165 both LDO's are adjustable.

SC1164 Maximum Ratings

Parameter	Symbol	Maximum	Units
VCC to GND	VCC	-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	30	°C/W

SC1164 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 requirements
• 1.5V, 2.5V or Adj. @ 1% for linear section

SC1164 Typical Application

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

SC1164 Connection Diagram

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