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參數(shù)資料
| 型號： | L6730DTR |
| 廠商： | 意法半導體 |
| 英文描述： | Adjustable step-down controller with synchronous rectification |
| 中文描述： | 可調式降壓同步整流控制器 |
| 文件頁數(shù)： | 25/50頁 |
| 文件大?。?/td> | 1394K |
| 代理商： | L6730DTR |
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L6730C - L6730D
Device description
25/50
During the constant-current-protection if the Vout becomes lower than 80% of the programmed
value an UV (under-voltage) is detected and the device enters in HICCUP mode. The under-
voltage-lock-out (UVLO) is adjustable by the multifunction pin (see
Chapter 5.10 on page 25
).
It’s possible to set two different thresholds:
4.2V for 5V Bus
8.6V for 12V Bus
●
●
Working with a 12V BUS, setting the UVLO at 8.6V can be very helpful to limit the input current
in case of BUS fall.
5.9
Adjustable masking time
By connecting the masking-time pin to V
CCDR
or GND it is possible to select two different
values for the peak -current-protection leading edge blanking time. This is useful to avoid any
false OCP trigger due to spikes and oscillations generated at the turn-on of the high-side
MOSFET(s). The amount of this noise depends a lot on the layout, MOSFETs, free-wheeling
diode, switched current and input voltage. In case of good layout and medium current, the
minimum masking time can be chosen, while in case of higher noise, it’s better to select to
maximum one. Connecting Tmask pin to V
CCDR
the masking time is about 400ns while
connecting it to GND the resulting masking time is about 260ns.
5.10 Multifunction pin (S/O/U L6730C) (CC/O/U L6730D)
With this pin it is possible:
To enable-disable the sink-mode-current capability (L6730C) or the constant current
protection (L6730D) at the end of the soft-start;
To enable-disable the latch-mode for the OVP;
To set the UVLO threshold for 5V BUS and 12V BUS.
●
●
●
Table 6
shows how to set the different options through an external resistor divider:
Figure 20. External resistor
R1
R2
L6730/B
S/O/U
CC/O/U
L6730C/D
VCCDR
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| L6730BTR | Adjustable step-down controller with synchronous rectification |
| L6730TR | Adjustable step-down controller with synchronous rectification |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L6730TR | 功能描述:DC/DC 開關控制器 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 |
| L6731B | 功能描述:開關變換器、穩(wěn)壓器與控制器 Adj. Step-Down w/ Synch Rectification RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| L6731BTR | 功能描述:IC CTRLR ADJ STEP DOWN 16-TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應商設備封裝:42-WLP 包裝:帶卷 (TR) |
| L6731D | 功能描述:DC/DC 開關控制器 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 |
| L6731DTR | 功能描述:DC/DC 開關控制器 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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