The LED driver AT8001 characteristics and applications
AT8001 for a high efficiency in the field of backlight driving driver chip, allows a wide voltage range: 2. 7 v to 5. 5 v, particularly suitable for lithium battery power supply equipment. AT8001 by external resistor set LED current, when more than 3 v power supply voltage, AT8001 maximum 30 ma current drive each way, the total current drive capacity of up to 120 ma. AT8001 according to the situation of the power supply voltage and load, or 1 in 1 times the work mode. Adaptive switching between five times the work mode, so that we can reduce the power consumption of the interior, thus ensuring high work efficiency. AT8001 can make the parallel white LED conduction differential pressure is bigger still guarantee good current compatibility. AT8001 adopting inductive principle of charge pump booster, peripheral devices require two 1 mu of input and output capacitance and two 0 F. 47 u F charge pump capacitor, superior characteristics control circuit ensures low power surge current and EMI. AT8001 adopts lead-free QFN 3 x 3 forms of packaging, comply with RoHS standard. In 1. Five times the working mode of the frequency of 1 MHZ. AT8001 has shutdown mode, in shutdown mode, AT8001 static current is less than 0. 1μA。
the structure diagram of AT8001:
the device characteristics drive up to 4 LED, each LED maximum current: 30 ma
low current matching accuracy: 0. 4% ( Typical values)
low efficient 1 times / 1. Five times the pattern, according to the input voltage and load adaptive switching efficiency up to 90%
low support PWM ( Frequency range: 0 hz to 50 KHZ)
brightness adjustment way low low input current fluctuation and low EMI inductor
where no periphery low switching frequency: 1 MHZ
low over-current protection and overheat protection
low working voltage range: 2. 7 v ~ 5。 5 v
* 3 mm * 3 mm of tiny 16 l QFN package ICC
'shutdown current RoHS standard, 100% lead-free packaging
AT8001 pin configuration and description:
application low mobile phone
' digital camera f low MP3, PMP, PDA
the typical application circuit:
Exhibition name: 2025 THE 137TH CHINA IMPORT AND EXPORT FAIRExhibition date: April 15-19, 2025Booth No. : 14.3 f33-34g10-11/14.2 D13-14-15Address: China Import and Export Fair Hall (Canton Fair Hall)
Date: January 04, 2025
Project location: Somalia
Quantity and specific configuration: 500 sets of 0278-400W solar street lights