参数资料
型号: L6730CQTR
厂商: STMICROELECTRONICS
元件分类: 稳压器
英文描述: 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, QCC24
封装: 4 X 4 MM, QFN-24
文件页数: 18/50页
文件大小: 1486K
代理商: L6730CQTR
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 VCCDR 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 VCCDR 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
VCCDR
L6730C/D
相关PDF资料
PDF描述
L6730CTR 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6730 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6730B 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6730TR 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6732CTR 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
相关代理商/技术参数
参数描述
L6730CTR 功能描述:IC REG CTRLR BUCK PWM VM 20TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP(0.300",7.62mm) 包装:管件 产品目录页面:1316 (CN2011-ZH PDF)
L6730D 功能描述:IC REG CTRLR BUCK PWM VM 20TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP(0.300",7.62mm) 包装:管件 产品目录页面:1316 (CN2011-ZH PDF)
L6730DTR 功能描述:IC REG CTRLR BUCK PWM VM 20TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP(0.300",7.62mm) 包装:管件 产品目录页面:1316 (CN2011-ZH PDF)
L6730TR 功能描述:DC/DC 开关控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
L6731B 功能描述:开关变换器、稳压器与控制器 Adj. Step-Down w/ Synch Rectification RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel