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參數(shù)資料
| 型號： | L6728D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 30 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, DFN-10 |
| 文件頁數(shù)： | 6/33頁 |
| 文件大?。?/td> | 1215K |
| 代理商： | L6728D |
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Overcurrent protection
L6728D
14/33
Doc ID 16498 Rev 1
8.1
Overcurrent threshold setting
The L6728D allows easy programming of a 1st level overcurrent threshold ranging from 50
mV to 550 mV, simply by adding a resistor (ROCSET) between LGATE and GND. The 2
nd
level threshold is automatically set accordingly.
During a short period of time (about 5 ms) following VCC rising over UVLO threshold, an
internal 10 A current (IOCSET) is sourced from the LGATE pin, determining a voltage drop
across ROCSET. This voltage drop is sampled and internally held by the device as a 1
st level
overcurrent threshold. The OC setting procedure’s overall time period is about 5 ms.
Connecting an ROCSET resistor between LGATE and GND, the programmed 1
st level
threshold is:
the programmed 2nd level threshold is:
ROCSET values range from 5 kΩ to 55 kΩ.
In case ROCSET is not connected, the device sets the OCP thresholds to the maximum
values: an internal safety clamp on LGATE is triggered as soon as the LGATE voltage
reaches 600 mV, setting the maximum threshold and suddenly ending the OC setting phase.
I
OCth1
I
OCSET
R
OCSET
R
dsON
--------------------------------------------
=
I
OCth2
1.5
I
OCSET
R
OCSET
R
dsON
--------------------------------------------
=
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| L6728DTR | 功能描述:電流型 PWM 控制器 Single-Phase PWM 5V to 12V Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 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 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| L6728H | 功能描述:電壓模式 PWM 控制器 Sgl Output 300 KHz DFN-10 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結(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 |
| L6728HTR | 功能描述:電流型 PWM 控制器 SINGLE PHASE PWM CNTRL PWR GOOD RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 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 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| L6728TR | 功能描述:DC/DC 開關(guān)控制器 Sngl phase PWM controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| L6730 | 功能描述:DC/DC 開關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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