LX1660CN

LX1660CN Datasheet

LX1660 / 1661

Part	Datasheet
LX1660CN	LX1660CN (pdf)

Related Parts	Information
LX1661CD	LX1661CD
LX1661CN	LX1661CN
LX1660CD	LX1660CD

PDF Datasheet Preview
INFINITE POWER OF INNOVATION Not Recommended For New Design LX1660 / 1661 ADVANCED PWM CONTROLLER PRODUCTION DATA SHEET The LX1660 and LX1661 Are Monolithic Short-Circuit Current Limiting Without Switching Regulator Controller ICs designed to Expensive Current Sense Resistors. The provide low-cost, high performance adjustable current sensing mechanism can use a PCB trace power supply for microprocessors and other resistance or the parasitic resistance of the main applications requiring a fast transient response and inductor. For applications requiring a high degree a high degree of accuracy. They provide an of accuracy, a conventional sense resistor can be adjustable synchronous Pulse Width Modulator used. output suitable for a power supply for or Hiccup Mode Fault Protection. The hiccup other microprocessors. mode is programmable and with pulse-by-pulse Synchronous Rectifier Driver For CPU Core. current limiting will help protect the power The devices can drive dual MOSFETs resulting in supply system and load in the even of a short typical efficiencies of 85 - 90%, even with loads in circuit. excess of 10A. Synchronous shutdown results in Ultra-Fast Transient Response Reduces increased efficiency in light load applications. System Cost. The fixed frequency modulated off-time architecture results in the fastest transient response for a given inductor. Adaptive voltage positioning LX1661 only requires fewer low-ESR capacitors to meet stringent transient over and under-shoot specifications. IMPORTANT For the most current data, consult MICROSEMI’s website: LX1661 IN SOCKET 7 PROCESSOR SUPPLY APPLICATION OUTEN PRODUCT HIGHLIGHT 12V KEY FEATURES - Designed To Drive A Synchronous Rectifier Stage Can Also Be Used In NonSynchronous Applications - Soft-Start Capability - Hiccup-Mode Fault Protection - No Current-Sense Resistor Required For Current Limiting - Modulated Constant Off-Time Control Mechanism For Fast Transient Response And Simple System Design - 2V, Internal Voltage Reference Brought Out - Pentium Processor Supplies - AMD-K6TM Supplies - 6x86TM Supplies - Voltage Regulator Modules - General Purpose DC:DC Supplies

PDF Datasheet Preview

INFINITE POWER OF INNOVATION

Not Recommended For New Design

LX1660 / 1661

ADVANCED PWM CONTROLLER

PRODUCTION DATA SHEET

The LX1660 and LX1661 Are Monolithic Short-Circuit Current Limiting Without

Switching Regulator Controller ICs designed to Expensive Current Sense Resistors. The
provide low-cost, high performance adjustable current sensing mechanism can use a PCB trace
power supply for microprocessors and other resistance or the parasitic resistance of the main
applications requiring a fast transient response and inductor. For applications requiring a high degree
a high degree of accuracy. They provide an of accuracy, a conventional sense resistor can be
adjustable synchronous Pulse Width Modulator used.
output suitable for a power supply for or Hiccup Mode Fault Protection. The hiccup
other microprocessors.
mode is programmable and with pulse-by-pulse

Synchronous Rectifier Driver For CPU Core. current limiting will help protect the power

The devices can drive dual MOSFETs resulting in supply system and load in the even of a short
typical efficiencies of 85 - 90%, even with loads in circuit.
excess of 10A. Synchronous shutdown results in Ultra-Fast Transient Response Reduces
increased efficiency in light load applications.

System Cost. The fixed frequency modulated
off-time architecture results in the fastest
transient response for a given inductor. Adaptive
voltage positioning LX1661 only requires fewer
low-ESR capacitors to meet stringent transient
over and under-shoot specifications.

IMPORTANT For the most current data, consult MICROSEMI’s website:

LX1661 IN SOCKET 7 PROCESSOR SUPPLY APPLICATION

OUTEN

PRODUCT HIGHLIGHT 12V

KEY FEATURES
- Designed To Drive A

Synchronous Rectifier Stage Can Also Be Used In NonSynchronous Applications
- Soft-Start Capability - Hiccup-Mode Fault Protection - No Current-Sense Resistor

Required For Current Limiting
- Modulated Constant Off-Time

Control Mechanism For Fast Transient Response And Simple System Design
- 2V, Internal Voltage

Reference Brought Out
- Pentium Processor Supplies - AMD-K6TM Supplies - 6x86TM Supplies - Voltage Regulator Modules - General Purpose DC:DC

Supplies

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Datasheet ID: LX1660CN 649004