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Part Name(s) : SC1186CSW Semtech
Semtech Corporation
Description : Programmable Synchronous DC/DC Converter, Dual LOW DROPOUT REGULATOR Controller

DESCRIPTION
The SC1186 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 & III.
   
FEATURES
Synchronous design, enables no heatsink solution
• 95% efficiency (switching section)
• 5 bit DAC for output programmability
• Designed for Intel Pentium® ll & III requirements
• 1.5V, 2.5V short circuit protected linear Controllers
• 1.265V ± 1.5% Reference available
   
APPLICATIONS
• Pentium® ll & III microprocessor supplies
• Flexible motherboards
• 1.3V to 3.5V microprocessor supplies
Programmable triple power supplies
   

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Part Name(s) : RT9259A RT9259AGS RT9259APS Richtek
Richtek Technology
Description : 12V Synchronous Buck PWM DC-DC and Linear Power Controller

The RT9259A is a Dual-channel DC/DC Controller specifically designed to deliver high quality power where 12V power source is available. This part consists of a Synchronous buck Controller and an LDO Controller. The Synchronous buck Controller integrates MOSFET drivers that support 12V+12V bootstrapped voltage for high efficiency power conversion. The bootstrap diode is built in to simplify the circuit design and minimize external part count. The LDO Controller drives an external N-MOSFET for lower power requirement.

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Part Name(s) : SC1172 SC1172CSW SC1173 SC1173CSW Semtech
Semtech Corporation
Description : Programmable Synchronous DC/DC Converter WITH LOW DROPOUT REGULATOR Controller

DESCRIPTION
The SC1172/3 combines a Synchronous voltage mode Controller with a low-dropout linear regulator providing most of the circuitry necessary to implement two DC/DC Converters for powering advanced microprocessors such as Pentium® II (Klamath) or Deschutes.

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®II VRM8.1 requirements
•  1.5V or Adj. @ 1% for linear section

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

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Part Name(s) : SC1186 SC1186CSW SC1186CSW.TR SC1186CSWTR SC1186 SC1186-2.5CSW.TR SC1186CSW.TR SC1186CSWTRT SC1186-1.5CSW.TR Semtech
Semtech Corporation
Description : Programmable Synchronous DC/DC Converter, Dual LDO Controller

DESCRIPTION
The SC1186 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 & III.
   
FEATURES
Synchronous design, enables no heatsink solution
• 95% efficiency (switching section)
• 5 bit DAC for output programmability
• Designed for Intel Pentium® ll & III requirements
• 1.5V, 2.5V short circuit protected linear Controllers
• 1.265V ± 1.5% Reference available
   
APPLICATIONS
• Pentium® ll & III microprocessor supplies
• Flexible motherboards
• 1.3V to 3.5V microprocessor supplies
Programmable triple power supplies
   

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Part Name(s) : RT9259C RT9259CGA RT9259CGQV RT9259CGS RT9259CPA RT9259CPQV RT9259CPS Richtek
Richtek Technology
Description : 12V Synchronous Buck PWM DC-DC and Linear Power Controller

General Description
The RT9259C is a Dual-channel DC/DC Controller specifically designed to deliver high quality power where 12V power source is available. This part consists of a Synchronous buck Controller and an LDO Controller. The
Synchronous buck Controller integrates MOSFET drivers that support 12V+12V bootstrapped voltage for high
efficiency power conversion. The bootstrap diode is builtin to simplify the circuit design and minimize external part count. The LDO Controller drives an external N-MOSFET for lower power requirement.

Features
Single 12V Bias Supply
Support Dual Channel Power Conversion
  One Synchronous Rectified Buck PWM Controller
  One Linear Controller
Both Controllers Drive Low Cost N-MOSFETs
Adjustable Frequency from 150kHz to 1MHz and Free-Run Frequency at 230kHz
Small External Component Count
±1% High Accuracy Output Voltage Regulation for Both PWM and LDO Controller
Two Internal VREFPower Support Lower to 0.8V
Adjustable External Compensation
Linear Controller Drives N-MOSFET Pass Transistor
Fully-Adjustable Outputs
Under Voltage Protection for Both Outputs
Over Current Fault Monitor on MOSFET; No Current Sense Resistor is Required.
RoHS Compliant and 100% Lead (Pb)-Free

Applications
Graphic Card GPU, Memory Core Power
Graphic Card Interface Power
Motherboard, Desktop and Servers Chipset and Memory Core Power
IA Equipments
Telecomm Equipments
High Power DC-DC Regulators

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Part Name(s) : RT9259 RT9259GA RT9259GQV RT9259GS RT9259PA RT9259PQV RT9259PS Richtek
Richtek Technology
Description : 12V Synchronous Buck PWM DC-DC and Linear Power Controller

General Description
The RT9259 is a Dual-channel DC/DC Controller specifically designed to deliver high quality power where 12V power source is available. This part consists of a Synchronous buck Controller and an LDO Controller. The Synchronous buck Controller integrates MOSFET drivers that support 12V+12V bootstrapped voltage for high efficiency power conversion. The bootstrap diode is built-in to simplify the circuit design and minimize external part count. The LDO Controller drives an external N-MOSFET for lower power requirement.

Features
Single 12V Bias Supply
Support Dual Channel Power Conversion
  One Synchronous Rectified Buck PWM Controller
  One Linear Controller
Both Controllers Drive Low Cost N-MOSFETs
Adjustable Frequency from 150kHz to 1MHz and Free-Run Frequency at 230kHz
Small External Component Count
Output Voltage Regulation
  PWM Controller : ±1% Accuracy
  LDO Controller : ±2% Accuracy
Two Internal VREFPower Support Lower to 0.8V
Adjustable External Compensation
Linear Controller Drives N-MOSFET Pass Transistor
Fully-Adjustable Outputs
Under Voltage Protection for Both Outputs
Over Current Fault Monitor on MOSFET; No Current Sense Resistor is Required.
RoHS Compliant and 100% Lead (Pb)-Free

Applications
Graphic Card GPU, Memory Core Power
Graphic Card Interface Power
Motherboard, Desktop and Servers Chipset and Memory  Core Power
IA Equipments
Telecomm Equipments
High Power DC-DC Regulators

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Part Name(s) : N1153 Niko
Niko Semiconductor
Description : 5 Bit Programmable Synchronous DC/DC Controller

GENERAL DESCRIPTION
The N1153 is a low-cost, 5 bit TTL-compatible input, digital-to-analog (DAC) Programmable, Synchronous buck Converter Controller designed specifically to power the Pentium ® II as well as the next generation of P6 family or other high performance core logic in desktop personal computer CPU applications.
Additional features also include temperature compensated voltage reference, triangle wave oscillator, current limits comparator, frequency shift over-current protection, and an access ible, internally compensated error amplifier, power good signal, logic compatible shutdown, and over voltage protection are also provide. The N1153 operates at a fixed 200KHz, providing an optimum compromise between efficiency, external component size, and cost.

FEATURES
● High performance and low cost solution
Synchronous operation with high efficiency
● TTL-compatible 5 bit DAC, output voltage selection from 1.3V to 3.5V Programmable
● High current totem pole output, up to 2 A for direct driving of the external N-Channel power MOSFETs.
● 200 KHz fixed frequency internal oscillator
● Fast transient response
● Power-Good output voltage monitor
● Over-Voltage and Over-Current protection

APPLICATIONS
● Powering Pentium ® II, III or Deschutes, K6 and other advanced processor
● Multiple microprocessor supplies
● High power DC to DC Controller
Programmable power supplies

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Part Name(s) : N1153 ETC
Unspecified
Description : 5 Bit Programmable Synchronous DC/DC Controller

[NIKO-SEM]

GENERAL DESCRIPTION
The N1153 is a low-cost, 5 bit TTL-compatible input, digital-to-analog (DAC) Programmable, Synchronous buck Converter Controller designed specifically to power the Pentium ® II as well as the next generation of P6 family or other high performance core logic in desktop personal computer CPU applications.
Additional features also include temperature compensated voltage reference, triangle wave oscillator, current limits comparator, frequency shift over-current protection, and an access ible, internally compensated error amplifier, power good signal, logic compatible shutdown, and over voltage protection are also provide. The N1153 operates at a fixed 200KHz, providing an optimum compromise between efficiency, external component size, and cost.

FEATURES
● High performance and low cost solution
Synchronous operation with high efficiency
● TTL-compatible 5 bit DAC, output voltage selection from 1.3V to 3.5V Programmable
● High current totem pole output, up to 2 A for direct driving of the external N-Channel power MOSFETs.
● 200 KHz fixed frequency internal oscillator
● Fast transient response
● Power-Good output voltage monitor
● Over-Voltage and Over-Current protection

APPLICATIONS
● Powering Pentium ® II, III or Deschutes, K6 and other advanced processor
● Multiple microprocessor supplies
● High power DC to DC Controller
Programmable power supplies

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Part Name(s) : SC1162 SC1162CSW SC1162CSW.TR SC1163 SC1163CSW SC1163CSW.TR Semtech
Semtech Corporation
Description : Programmable Synchronous DC/DC Converter WITH LOW DROPOUT REGULATOR Controller

DESCRIPTION
The SC1162/3 combines a Synchronous voltage mode Controller with a low-dropout linear regulator providing most of the circuitry necessary to implement two DC/DC Converters for powering advanced microprocessors such as Pentium® II.

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® II requirements
• 1.5V or Adj. @ 1% for linear section
• 1.300V-2.05V ±1.5%; 2.100V-3.500V ±2%

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

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