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深圳市泰德蘭電子有限公司
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產(chǎn)品型號AOZ1977AI
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TheAOZ1977isahigh-efficiencyLEDdrivercontrollerforhighvoltageLEDbacklightingapplications
The AOZ1977 is a high-efficiency LED driver controller
for high voltage LED backlighting applications. It is
designed to drive a high-brightness LED light bar in LED
TV applications. The AOZ1977 can support a wide range
of input and output voltages. The input bias voltage of the
AOZ1977 is from 8 V to 30 V.
The AOZ1977 has multiple features to protect the
regulator under fault conditions. A control pin can disable
an external switch to disconnect the LEDs current path
from the output in PWM dimming or under catastrophic
failure conditions. Cycle-by-cycle current protection limits
the peak inductor current. Thermal shutdown provides an
additional level of protection.
Low feedback voltage (500 mV) helps reduce power loss.
The AOZ1977 features a sync function to allow for
synchronization with an external clock or multiple
AOZ1977 devices.
The AOZ1977 is available in a standard SO-16 package
ａnd operates over the -40 ?C to +85 ?C temperature
range
內(nèi)部驅動器：無
類型 - 初級：背光
類型 - 次級：高亮度 LED（HBLED）
頻率：50kHz ~ 300kHz
電壓 - 電源：8 V ~ 30 V
電壓 - 輸出：16V
安裝類型：表面貼裝
封裝/外殼：16-SOIC（0.154"，3.90mm 寬）
供應商器件封裝：16-SOIC
工作溫度：-40°C ~ 85°C
制造商零件編號：AOZ1977AI
制造商：Alpha & Omega Semiconductor Inc
描述：IC LED DRVR BCKLGT 16SOIC
系列：EZBoost?
恒流：-
恒壓：-
拓撲：PWM，升壓（升壓）
輸出數(shù)：1
?8 V to 30 V input bias voltage
?Up to 16 V driving capability at GATE pin and
DPWM pin.
?Disconnect control pin for PWM dimming or fault
conditions.
?Bi-directional clock synchronization
?500 mV feedback regulation
?8 bit PWM dimming resolution
?Cycle-by-cycle current limit
?Output over-voltage protection
?LED short and open protection
?Thermal shutdown protection
?SO-16 package
Applications
?LCD TV LED backlight
?Monitor LED backlight
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