LT3420 - Photoflash Capacitor Chargers With Automatic Refresh

The LT3420 LT3420-1 charge high voltage photoflash capacitors quickly and efficiently. Designed for use in both digital and film cameras, these devices use a flyback topology to achieve efficiencies up to four times better than competing Flash modules. A unique adaptive off-time control algorithm* maintains current-limited continuous mode transformer operation throughout the entire charge cycle, eliminating the high inrush current often found in modules.
The LT3420 LT3420-1 output voltage sensing scheme* monitors the flyback voltage to indirectly regulate the output voltage, eliminating an output resistor divider or Discrete Zener Diode This feature allows the capacitor to be held at a fully charged state without excessive power consumption. Automatic refresh (which CAN be defeated) allows the capacitor to remain charged while consuming an average input current of about 2mA, at a user-defined refresh rate. A Logic high on the CHARGE pin initiates charging, while the DONE pin signals that the capacitor is fully charged.
The LT3420 LT3420-1 are available in 10-Lead MSOP and (3mm 3mm) DFN packages.
*Protected by U.S. Patents including 6518733.
By Linear Technology Corporation
LT3420 's PackagesLT3420 's pdf datasheet
LT3420EDD DFN
LT3420EDD-PBF DFN
LT3420EDD-TR DFN
LT3420EDD-TRPBF DFN
LT3420EDD-1 DFN
LT3420EDD-1-PBF DFN
LT3420EDD-1-TR DFN
LT3420EDD-1-TRPBF DFN
LT3420EMS MSOP
LT3420EMS-PBF MSOP
LT3420EMS-TR MSOP
LT3420EMS-1 MSOP
LT3420EMS-1-PBF MSOP
LT3420EMS-1-TR MSOP
LT3420EMS-1-TRPBF MSOP




LT3420 Pinout, Pinouts
LT3420 pinout,Pin out
This is one package pinout of LT3420,If you need more pinouts please download LT3420's pdf datasheet.

LT3420 Application circuits
LT3420 circuits
This is one application circuit of LT3420,If you need more circuits,please download LT3420's pdf datasheet.


Related Electronics Part Number

Related Keywords:

LT3420 Pb-Free LT3420 Cross Reference LT3420 Schematic LT3420 Distributor
LT3420 Application Notes LT3420 RoHS LT3420 Circuits LT3420 footprint