Features: 5-Bit Programmable Output For CPU Core Supply Power Solution For Pentium II Processors No Sense Resistor Required For Short-Circuit Current LimitingSoft-Start And Hiccup-Mode Current Limiting Functions Modulated Constant Off-Time Control Mechanism For Fast Transient Response And Simple S...
LX1669: Features: 5-Bit Programmable Output For CPU Core Supply Power Solution For Pentium II Processors No Sense Resistor Required For Short-Circuit Current LimitingSoft-Start And Hiccup-Mode Current Limit...
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12V Supply Voltage (VCC12) .................................................................................. 18V
5V Supply Voltage (VCC5) ....................................................................................... 7V
Output Drive Peak Current Source (500ns)....................................................... 1.0A
Output Drive Peak Current Sink (500ns) ........................................................... 1.0A
Input Voltage (SS, VID[0:4]) ................................................................... -0.3V to 6V
Operating Junction Temperature .................................................................... 150°C
Storage Temperature Range ........................................................... -65°C to +150°C
Lead Temperature (Soldering, 10 Seconds) .................................................... 300°C
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with
respect to Ground. Currents are positive into, negative out of the specified
terminal.
Note 2. VCC3 supply is used as input to internal low dropout regulator. Voltages above
3.3V will cause increased thermal dissipation in the package. Power dissipation
should be limited to keep junction temperature below maximum rating.
The LX1669 is a Monolithic Switching Regulator Controller IC designed to provide a low cost, high performance
adjustable power supply for advanced microprocessors and other applications requiring a very fast transient response and a high degree of accuracy. It provides a programmable switching regulator output suitable for powering Pentium® II and other processors.