| 品牌 | ir | 型號(hào) | lm3402 |
| 批號(hào) | 09 | 封裝 | msop8 |
| 營銷方式 | 現(xiàn)貨 | 產(chǎn)品性質(zhì) | 熱銷 |
| 處理信號(hào) | 模擬信號(hào) | 工藝 | 半導(dǎo)體集成 |
| 導(dǎo)電類型 | 雙極型 | 集成程度 | 中規(guī)模 |
| 規(guī)格尺寸 | msop8（mm） | 工作溫度 | -40~125（℃） |
| 靜態(tài)功耗 | 0.1（mw） |
general description
the lm3402/02hv are monolithic switching regulators designed
to deliver constant currents to high power leds. ideal
for automotive, industrial, and general lighting applications,
they contain a high-side n-channel mosfet switch with a
current limit of 735 ma (typical) for step-down (buck) regulators.
hysteretic control with controlled on-time coupled with
an external resistor allow the converter output voltage to
adjust as needed to deliver a constant current to series and
series - parallel connected arrays of leds of varying number
and type, led dimming by pulse width modulation (pwm),
broken/open led protection, low-power shutdown and thermal
shutdown complete the feature set.
features
n integrated 0.5a n-channel mosfet
n vin range from 6v to 42v (lm3402)
n vin range from 6v to 75v (lm3402hv)
n 500 ma output current over temperature
n cycle-by-cycle current limit
n no control loop compensation required
n separate pwm dimming and low power shutdown
n supports all-ceramic output capacitors and
capacitor-less outputs
n thermal shutdown protection
n msop-8 package
applications
n led driver
n constant current source
n automotive lighting
n general illumination
n industrial lighting