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參數(shù)資料
| 型號： | L6730 |
| 廠商： | 意法半導體 |
| 英文描述： | Adjustable step-down controller with synchronous rectification |
| 中文描述： | 可調(diào)式降壓同步整流控制器 |
| 文件頁數(shù)： | 21/52頁 |
| 文件大小： | 1370K |
| 代理商： | L6730 |
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L6730 - L6730B
Device description
21/52
5.8
Monitoring and protection
The output voltage is monitored by the FB pin. If it is not within ±10% (typ.) of the programmed
value, the Power-Good (PGOOD) output is forced low. The PGOOD signal can be delayed by
adding an external capacitor on PGDelay pin (see
Table 3: Pins connection
and
Figure 13.
);
this can be useful to perform cascade sequencing. The delay can be calculated with the
following formula:
(
pF
C
PGDelay
=
5
The device provides over voltage protection: when the voltage sensed on FB pin reaches a
value 20% (typ) greater than the reference, the low-side driver is turned on. If the OVP not-
latched mode has been set the low-side MOSFET is kept on as long as the overvoltage is
detected (see
Figure 14.
).The OVP latched-mode has been set the low-side MOSFET is turned
on until V
CC
is toggled (see
Figure 15.
). In case of latched-mode OVP the OSC pin is forced
high (4.5V typ) if an over voltage is detected.
Figure 13. PGOOD signal
)
2ms/Div.
PGOOD
FB
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|---|---|
| L6730B | Adjustable step-down controller with synchronous rectification |
| L6730BTR | Adjustable step-down controller with synchronous rectification |
| L6730TR | Adjustable step-down controller with synchronous rectification |
| L6740L | Hybrid controller (4+1) for AMD SVID and PVID processors |
| L6740LTR | Hybrid controller (4+1) for AMD SVID and PVID processors |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L6730_09 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Adjustable step-down controller with synchronous rectification |
| L6730B | 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 |
| L6730BTR | 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 |
| L6730C | 功能描述:IC REG CTRLR BUCK PWM VM 20TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:100% 電源電壓:8.2 V ~ 30 V 降壓:無 升壓:無 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:0°C ~ 70°C 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 產(chǎn)品目錄頁面:1316 (CN2011-ZH PDF) |
| L6730CQ | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Adjustable step-down controller with synchronous rectification |
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