- 廠家:axelite
- 封裝:SOP-8L
- 批號:2013
- 數(shù)量:30000
AX5201 3A,500KHz, PWM DC/DC升壓IC
AX5201是AXElite亞瑟萊特科技出品的DC-DC升壓恒流大功率LED驅(qū)動,AX5201外加一個電感和肖特基二極管,配合AX5201內(nèi)置的大功率N-MOS,就可以輸出32V的電壓,以及2A的LED驅(qū)動電流。
AX5201工作頻率達(dá)到500KHz,這可以使得AX5201的效率更高,噪聲更小,也可以使用更小的外圍元器件。
AX5201輸出電壓可通過內(nèi)部1V的電壓基準(zhǔn)和其他外圍元器件以及FB腳編程設(shè)定,AX5201可通過外圍電容設(shè)定軟啟動,可實現(xiàn)對AX5201的過流、過熱保護(hù)以及使能控制。
AX5201性能描述:
The AX5201 is high efficient step-up DC/DC converter. Large output current is
possible having a built in internal N channel MOSFET, and using an external coil and
diode.
The AX5201 can be operated at switching frequencies of 500 kHz allowing for easy
filtering and low noise, the size of the external components can be reduced.
Output voltage is programmable with 1.0V of standard voltage supply internal, and
using externally connected components, output voltage (FB) can be set up at will. The
soft-start time can be programmed by outside capacitor; the function prevents overshoot at
startup. Build inside Current limit, Thermal Shutdown and enable functions.
AX5201特點:
n 輸入電壓Input voltage:3V to 20V
n 輸出電壓Output voltage:3.3V to 32V
n 占空系數(shù)Duty ratio:0% to 85% PWM control
n 固定頻率Oscillation frequency:500KHz.
n Enable and Thermal Shutdown function. 使能端和過熱關(guān)斷保護(hù)功能
n Internal Current limit. 內(nèi)置電流限制調(diào)節(jié)
n Built-in N-channel MOSFET 內(nèi)置N溝道MOS
n SOP-8L with Exposed pad Pb-Free package. SOP-8L裸焊盤無鉛封裝
主營范圍:LED驅(qū)動,LED保護(hù),電源管理(DC-DC升/降壓,LDO/低壓差LDO,電壓檢測/復(fù)位),鋰電池保護(hù)芯片,POWER MOSFET,視頻等元器件。...







