LT1509 - Power Factor And PWM Controller

The LT1509 is a complete solution for universal off-line switching power supplies utilizing active power factor correction. The PFC section is identical to the LT1248 PFC controller except the EN/SYNC pin is removed because PFC and PWM are synchronized internally. The current mode PWM section (the LT1508 is the volt-age-mode counterpart) contains all the primary side functions to convert the PFC preregulated high voltage output to an isolated low voltage output. The PWM duty cycle is internally limited to 47% (maximum 50%) to prevent transformer saturation. PWM soft start begins when PFC output reaches the preset voltage. In the event of brief line loss,the PWM will be shut off when the PFC output voltage drops below 73% of the preset value.
By Linear Technology Corporation
Part Manufacturer Description Datasheet Samples
LT1509CN#PBF Linear Technology LT1509 - Power Factor and PWM Controller; Package: PDIP; Pins: 20; Temperature Range: 0°C to 70°C
LT1509CSW#TRPBF Linear Technology LT1509 - Power Factor and PWM Controller; Package: SO; Pins: 20; Temperature Range: 0°C to 70°C
LT1509CN Linear Technology LT1509 - Power Factor and PWM Controller; Package: PDIP; Pins: 20; Temperature Range: 0°C to 70°C
LT1509IN#PBF Linear Technology LT1509 - Power Factor and PWM Controller; Package: PDIP; Pins: 20; Temperature Range: -40°C to 85°C
LT1509CSW Linear Technology LT1509 - Power Factor and PWM Controller; Package: SO; Pins: 20; Temperature Range: 0°C to 70°C
LT1509CSW#TR Linear Technology LT1509 - Power Factor and PWM Controller; Package: SO; Pins: 20; Temperature Range: 0°C to 70°C
LT1509ISW#TRPBF Linear Technology LT1509 - Power Factor and PWM Controller; Package: SO; Pins: 20; Temperature Range: -40°C to 85°C
LT1509CSW#PBF Linear Technology LT1509 - Power Factor and PWM Controller; Package: SO; Pins: 20; Temperature Range: 0°C to 70°C
LT1509ISW#PBF Linear Technology LT1509 - Power Factor and PWM Controller; Package: SO; Pins: 20; Temperature Range: -40°C to 85°C
LT1509IN Linear Technology LT1509 - Power Factor and PWM Controller; Package: PDIP; Pins: 20; Temperature Range: -40°C to 85°C
LT1509 's PackagesLT1509 's pdf datasheet
LT1509CN-PBF PDIP
LT1509CSW-PBF SOIC
LT1509CSW-TRPBF SOIC
LT1509IN-PBF PDIP
LT1509ISW-PBF SOIC
LT1509ISW-TRPBF SOIC




LT1509 Pinout, Pinouts
LT1509 pinout,Pin out
This is one package pinout of LT1509,If you need more pinouts please download LT1509's pdf datasheet.

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