史上最清晰kx1B电路全貌
索性拆个干净，这下就清楚了正面
背面
背面的升压芯片是zetex C400
这个好 ZXSC400器件资料
器件摘要：
DESCRIPTION
The ZXSC400 is a voltage mode boost converter in the SOT23-6 package. Its low
feedback voltage allows the current in a chain of LEDs to be set and accurately
monitored with a single resistor giving minimal losses. Its excellent load and line
regulation means that for the full supply range from lithium-ion cells, the LED
current will typically change by less than 1%. Using high efficiency Zetex switching
transistors with ratings of 20V and higher allow many LEDs to be chained in series
for the best LED current matching possible.
FEATURES
• 1.8V to 8V supply range
• Typical output regulation of H110061%
• Over 80% typical efficiency
• 4.5H9262A typical shutdown current
• Series connection for ultimate LED current matching
APPLICATIONS
• White LED backlighting for colour LCD panels
• General LED backlighting
• High performance white LED flashlights
• General LED driving from batteries
DEVICE MARKING
• C400
ZXSC400
ISSUE 1 - JANUARY 2003
1
LED DRIVER BOOST CONVERTER
DEVICE REEL
SIZE
TAPE
WIDTH
QUANTITY
PER REEL
ZXSC400E6TA 7“ 8mm 3000 units
ORDERING INFORMATION
STDN
GND
V
CC
DRIVE
SENSE
V
FB
PINOUT
SOT23-6
Top View 不懂电路，只是图片确实够大够清晰 拍的不错，辛苦 看着不错，只是看不懂，内行完全可以照着做一个吧？ 把所有元件买齐了再说
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