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LT3420EMS#PBF

Photoflash Capacitor Charger with Automat Refresh, 1.8 V to 16 V in, MSOP-10

LT3420EMS#PBF - Photoflash Capacitor Charger with Automat Refresh, 1.8 V to 16 V in, MSOP-10

Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
LT3420EMS#PBF
Order Code:
1273497
Technical Datasheet:
LT3420EMS#PBF   Datasheet
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Product Overview

The LT3420EMS#PBF is a Photoflash Capacitor Charger with automatic refresh charges high voltage photoflash capacitors quickly and efficiently. Designed for use in both digital and film cameras, it uses a flyback topology to achieve efficiencies up to four times better than competing flash modules. An 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. This feature allows the capacitor to be held at a fully charged state without excessive power consumption. Automatic refresh allows the capacitor to remain charged while consuming an average input current of about 2mA, at an user-defined refresh rate. Logic high on the CHARGE pin initiates charging, while the DONE pin signals that the capacitor is fully charged.
  • Charges 220µF to 320V in 3.7 seconds from 5V
  • Charges any size photoflash capacitor
  • Supports operation from two AA cells or any supply from 1.8 to 16V
  • 1.4A Controlled peak switch current
  • 840mA Controlled input current
  • Uses standard transformers
  • >75% Typical efficient flyback operation
  • Adjustable output
  • Automatic refresh
  • Charge complete indicator
  • No high voltage Zener diode required
  • No output voltage divider required

Applications

Imaging, Video & Vision, Consumer Electronics, Power Management

Product Information

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:
Photoflash Capacitor Charger with Automatic Refresh

:
1.8V

:
16V

:
MSOP

:
10Pins

:
-40°C

:
85°C

:
-

:
-

:
MSL 1 - Unlimited
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Technical Docs (2)

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