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参数资料
| 型号： | SC418ULTRT |
| 厂商： | Semtech |
| 文件页数： | 11/30页 |
| 文件大小： | 691K |
| 描述： | IC REG DL BUCK/LINEAR 20MLPQ |
| 产品培训模块： | Power Supplies 101 |
| 标准包装： | 1 |
| 系列： | EcoSpeed® |
| 拓扑： | 降压（降压）（1），线性（LDO）（1） |
| 功能： | 任何功能 |
| 输出数： | 2 |
| 频率 - 开关： | 1MHz |
| 电压/电流 - 输出 1： | 控制器 |
| 电压/电流 - 输出 2： | 0.75 V ~ 5.25 V，200mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 3 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-MLPQ |
| 供应商设备封装： | 20-MLPQ（3x3） |
| 包装： | 标准包装 |
| 其它名称： | SC418ULTRTDKR |
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SC418
Pin Descriptions
Pin # Pin Name Pin Function
FB
Feedback input for switching regulator connect to an external resistor divider from output used to
program the output voltage.
2
FBL
Feedback input for the LDO connect to an external resistor divider from VLDO to AGND used to pro-
gram the LDO output.
3
VDDA
Supply input for internal analog circuits connect to external 3.3V or 5V supply, or configure the LDO for
3.3V or 5V and connect to VLDO also the sense input for VDDA UVLO.
4
VOUT
Switcher output voltage sense pin also the input to the internal switch-over MOSFET between VOUT and
VLDO. The voltage at this pin must be less than or equal to the voltage at the VDDA pin.
5
NC No Connection
6
VIN
Input supply voltage connect to the same supply used for the high-side MOSFET. Connect a 00nF ca-
pacitor from this pin to AGND.
7
VLDO LDO output The voltage at this pin must be less than or equal to the voltage at the VDDA pin.
8
BST
Bootstrap pin connect a 00nF minimum capacitor from BST to LX to develop the floating voltage for the
high-side gate drive.
9
DH High-side gate drive output
0
LX Switching (phase) node
PGND Power ground
2
DL Low-side gate drive output
3
VDDP Supply input for the DH and DL gate drives connect to the same 3.3V or 5V supply used for VDDA.
4
PSV
Power-save programming input connect a resistor to AGND to set a minimum (ultrasonic) power-save
frequency float pin to select power-save with no minimum frequency pull up to VDDA to disable
power-save and select forced continuous mode.
5
PGOOD
Open-drain Power Good indicator high impedance indicates the switching regulator output is good. An
external pull-up resistor is required.
6
ILIM Current limit sense pin used to program the current limit by connecting a resistor from ILIM to LX.
7
EN
Enable input for switching regulator logic low disables the switching regulator logic high enables the
switching regulator.
8
AGND Analog ground
9
TON ON time programming input set the on-time by connecting through a resistor to AGND.
20
ENL
Enable input for the LDO and VIN UVLO input for the switching regulator connect ENL to AGND to disable
the LDO drive to logic high (>3V) to enable the LDO and inhibit VIN UVLO connect to resistor divider
from VIN to AGND to program the V
IN
UVLO threshold.
PAD
AGND Analog ground
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SC419 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:EcoSpeedTM DC-DC Converter with Integrated Boost Diode |
| SC419970CGCR2 | 制造商:Motorola Inc 功能描述: |
| SC419EVB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:EcoSpeedTM DC-DC Converter with Integrated Boost Diode |
| SC419ULTRT | 功能描述:IC REG CTRLR BUCK PWM 20-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:EcoSpeed®, SmartDrive™ 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR |
| SC41E6 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:SIEMENS ANNOUNCES A SUB-MICTON GENERATION OF CHANNELLESS GATE-ARRAYS BASED ON THE PROVEN MEGALOGIC PROCESS |
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