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2022-09-19 17:33:03
CAT37 is CMOS white light LED driver boost converter
Features
Low static grounding current (typically 0.5mma)
power efficiency exceeds 80%
Compatible with LT1937adjustable output current (up to 40 mAh)
High frequency 1.2 MHz operation
#8226 ; The input voltage is reduced to 2.5 v
low resistance (0.5) power switch
up to 4 white LED
#8226 ; Close current less than 1A
Load fault protection for the opening
Low -value external components
thin (1 mm) TSOT-23 5 lead packaging
these devices are lead, halogen-free/BFR and conforms to ROHS
color LCD and keyboard backlight
Mobile phone
Handheld terminal
digital camera
pda/game [123 [123 ]
Portable MP3 player
Instructions
CAT37
is a DC/DC booster converter, which provides a adjustable output current Essence Operated at the frequency of 1.2 MMS, allowing the device to be used with very small external inductors and ceramic capacitors.The target of the cat37 is to drive multiple series of white light glowing diodes (LEDs), and provide the necessary adjustment current to control the brightness and color purity. External resistor R1 controls output current. The LED current up to 40 mAh can be supported within the range of input power supply voltage from 2.5 volt to 7 volts, making the device an ideal choice for battery power supply applications. LED lighting can be completed by using DC voltage, logical signal or pulse width modulation (PWM) signal. Turn off the input pins to allow the device to be in the power off mode when the near zero " static current.
In addition to over -current restrictions