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LT3468-1封装图解一
LT3468-1是Photoflash Capacitor Chargers in ThinSOT?

LT3468-1 - Photoflash Capacitor Chargers in ThinSOT?

LT3468 - Photoflash Capacitor Chargers in ThinSOT? - Linear Technology(365bet官网平台网址_365bet注册赌场_365bet集卡尔特)

功能描述

The LT3468/LT3468-1/LT3468-2 are highly integrated ICs designed to charge photoflash capacitors in digital and film cameras. A patented control technique* allows for the use of extremely small transformers. Each device contains an on-chip high voltage NPN power switch. Output voltage detection* is completely contained within the device, eliminating the need for any discrete zener diodes or resistors. The output voltage can be adjusted by simply changing the turns ratio of the transformer. The LT3468 has a primary current limit of 1.4A, the LT3468-2 has a 1A limit, and the LT3468-1 has a 0.7A limit. These different current limit levels result in well controlled input currents of 500mA for the LT3468, 375mA for the LT3468-2 and 225mA for the LT3468-1. Aside from the differing current limit, the three devices are otherwise equivalent.

The CHARGE pin gives full control of the part to the user. Driving CHARGE low puts the part in shutdown. The DONE pin indicates when the part has completed charging. The LT3468 series of parts are available in tiny low profile (1mm) SOT-23 packages.

*U.S. Patent # 6, 518, 733

特点
  • Highly Integrated IC Reduces Solution Size
  • Uses Small Transformers:5.8mm x 5.8mm x 3mm
  • Fast Photoflash Charge Times:4.6s for LT3468 (0V to 320V, 100μF, VIN = 3.6V)5.7s for LT3468-2 (0V to 320V, 100μF, VIN = 3.6V)5.5s for LT3468-1 (0V to 320V, 50μF, VIN = 3.6V)
  • Controlled Input Current:500mA (LT3468)375mA (LT3468-2)225mA (LT3468-1)
  • Supports Operation from Single Li-Ion Cell, or Any Supply from 2.5V up to 16V
  • Adjustable Output Voltage
  • No Output Voltage Divider Needed
  • Charges Any Size Photoflash Capacitor
  • Low Profile (<1mm) SOT-23 Package
  • 应用
  • Digital / Film Camera Flash
  • PDA / Cell Phone Flash
  • Emergency Strobe
  • 以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格(美元)
    器件型号 封装 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量)
    LT3468ES5 SOT-23 E $2.86
    LT3468ES5-1 SOT-23 E $2.86
    LT3468ES5-1#TRMPBF SOT-23 E $2.86 $2.03
    LT3468ES5-1#TRPBF SOT-23 E $2.86 $2.01
    LT3468ES5-2 SOT-23 E $2.86
    LT3468ES5-2#TRMPBF SOT-23 E $2.86 $2.03
    LT3468ES5-2#TRPBF SOT-23 E $2.86 $2.01
    LT3468ES5#TR SOT-23 E $2.86 $2.01
    LT3468ES5#TRM SOT-23 E $2.86 $2.03
    LT3468ES5#TRMPBF SOT-23 E $2.86 $2.03
    LT3468ES5#TRPBF SOT-23 E $2.86 $2.01
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  • LT3468ES5#TRMPBF - Linear(365bet官网平台网址_365bet注册赌场_365bet集卡尔特)
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  • LT3468ES5#TR - Linear(365bet官网平台网址_365bet注册赌场_365bet集卡尔特)
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