LT1246 - 1MHz Off-Line Current Mode PWM And DC/DC Converter

The LT1246 LT1247 are 8-pin, fixed frequency, current mode, pulse width Modulators These devices are designed to be improved plug compatible versions of the industry standard UC1842 PWM circuit. The LT1246 LT1247 are optimized for off-line and DC/DC converter applications. They contain a temperature compensated reference, high gain error Amplifier current sensing Comparator and a high current totem pole output stage ideally suited to driving Power MOSFETs Start-up current has been reduced to less than 250A. Cross-conduction current spikes in the totem pole output stage have been eliminated, making 1MHz operation practical. Several new features have been incorporated. Leading edge blanking has been added to the Current Sense Comparator This minimizes or eliminates the Filter that is normally required. Eliminating this Filter allows the Current Sense loop to operate with minimum delays. Trims have been added to the Oscillator circuit for both frequency and sink current, and both of these parameters are tightly specified. The output stage is clamped to a maximum VOUT of 18V in the on state. The output and the reference output are actively pulled low during under-voltage lockout.
By Linear Technology Corporation
LT1246 's PackagesLT1246 's pdf datasheet
LT1246CN8 PDIP
LT1246CN8-PBF PDIP
LT1246CS8 SOIC
LT1246CS8-PBF SOIC
LT1246CS8-TR SOIC
LT1246CS8-TRPBF SOIC




LT1246 Pinout, Pinouts
LT1246 pinout,Pin out
This is one package pinout of LT1246,If you need more pinouts please download LT1246's pdf datasheet.

LT1246 Application circuits
LT1246 circuits
This is one application circuit of LT1246,If you need more circuits,please download LT1246's pdf datasheet.


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