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参数资料
| 型号： | PT5541C |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA3 |
| 封装： | SMD-3 |
| 文件页数： | 6/8页 |
| 文件大小： | 187K |
| 代理商： | PT5541C |
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes continued
Fault Protection
Unlike a “Buck” or step-down regulator it is not possible
to provide a boost regulator with short-circuit protection.
As revealed in the block diagram of Figure 1-1, inhibiting
the MOSFET switching action only disables the regulator’s
boost function. Therefore under a severe output impedance
fault the control circuit cannot disconnect the output from
the input source.
To prevent an output over-current or short-circuit fault
from propagating to the input bus, a fuse or equivalent
over-current protection is recommended at the input of
the module. Whatever form of protection is selected, it is
important to note that the impedance and/or voltage drop
of the series element will add to the regulator’s minimum
input voltage requirements. Power up may also be affected.
The combination of an input surge current with an im-
pedance in series with the regulator input may cause the
input voltage to momentarily dip back below the UVLO
threshold. Ensure that the fuse rating or input current
limit threshold are designed with a generous margin.
PT5540 Series
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| PT5541N | 功能描述:开关变换器、稳压器与控制器 12V 1A 5-V Input Step-Up (Boost) ISR 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 |
| PT5542 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:15V 0.75A. 5-V Input Step-Up (Boost) ISR |
| PT5542A | 功能描述:REG 15V .75A 4.5/9VIN HORZ RoHS:否 类别:电源 - 板载 >> DC DC Converters 系列:PT5540 设计资源:VI-200, VI-J00 Design Guide, Appl Manual 标准包装:1 系列:* 类型:隔离 输出数:1 电压 - 输入（最小）:55V 电压 - 输入（最大）:100V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:200W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:9-FinMod 尺寸/尺寸:4.60" L x 1.86" W x 0.79" H（116.8mm x 47.2mm x 20.1mm） 包装:散装 工作温度:-55°C ~ 85°C 效率:* 电源（瓦特）- 最大:* |
| PT5542C | 功能描述:DC/DC转换器 15V 0.75A 5V Input Step-Up ISR RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PT5542N | 功能描述:REG 15V .75A 4.5/9VIN VERT RoHS:否 类别:电源 - 板载 >> DC DC Converters 系列:PT5540 设计资源:VI-200, VI-J00 Design Guide, Appl Manual 标准包装:1 系列:* 类型:隔离 输出数:1 电压 - 输入（最小）:55V 电压 - 输入（最大）:100V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:200W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:9-FinMod 尺寸/尺寸:4.60" L x 1.86" W x 0.79" H（116.8mm x 47.2mm x 20.1mm） 包装:散装 工作温度:-55°C ~ 85°C 效率:* 电源（瓦特）- 最大:* |
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