參數(shù)資料
型號(hào)： L6728
廠商： 意法半導(dǎo)體
英文描述： Single phase PWM controller with PowerGOOD
中文描述： 單相PWM控制器與電源良好
文件頁數(shù)： 13/32頁
文件大?。?/td> 942K
代理商： L6728
L6728
Over current protection
13/32
8.1
Over current threshold setting
L6728 allows to easily program a 1
st
level Over Current Threshold ranging from 50mV to
550mV, simply by adding a resistor (R
OCSET
) between LGATE and GND. 2
nd
level threshold
will be automatically set accordingly.
During a short period of time (about 5ms) following VCC rising over UVLO threshold, an
internal 10μA current (I
OCSET
) is sourced from LGATE pin, determining a voltage drop
across R
OCSET
. This voltage drop will be sampled and internally held by the device as 1
st
level Over Current Threshold. The OC setting procedure overall time length is about 5ms.
Connecting a R
OCSET
resistor between LGATE and GND, the programmed 1
st
level
threshold will be:
the programmed 2
nd
level threshold will be:
R
OCSET
values range from 5k
to 55k
.
In case R
OCSET
is not connected, the device sets the OCP thresholds to the maximum
values: an internal safety clamp on LGATE is triggered as soon as LGATE voltage reaches
600mV, setting the maximum threshold and suddenly ending OC setting phase.
I
OCth1
I
R
R
dsON
-------------------------------------------
=
I
OCth2
1.5
I
R
R
dsON
-------------------------------------------
=
相關(guān)PDF資料
PDF描述
L6728TR Single phase PWM controller with PowerGOOD
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L6731BTR Transistor; Type: Amplifiers/Bipolar; VCEO (V): -25; Ic (A): -1; Pc (W): 0.8; hFE: 85 to 330; VCE (sat) (V) max: -0.5; Package: TO-92Mod
L6732 Adjustable step-down controller with synchronous rectification
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6728_0706 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Single phase PWM controller with Power Good
L6728A 功能描述:電壓模式 PWM 控制器 Hi-Freq. singl-phase PWM controller w/Po RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
L6728AH 功能描述:軟開關(guān) PWM 控制器 Sgl Output 600 KHz DFPN-10 RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
L6728AHTR 功能描述:電流型 PWM 控制器 HIGH FREQ PWM CNTRL W/PO RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
L6728ATR 功能描述:電壓模式 PWM 控制器 HIGH FREQ SINGLE PHASE PWM CNTRL RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
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