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
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
SC424MLTRT
IC REG DL BUCK/LINEAR 28MLPQ
SC4250LISTRT
IC HOT SWAP CTRLR 8-SOIC
SC427MLTRT
IC REG DL BUCK/LINEAR 32MLPQ
SE95D,112
IC SENSOR TEMP 2.8-5.5V SOT96-1
SE97BTP,547
IC TEMP SENSOR DIMM 8HWSON
SE98ATP,547
IC TEMP SENSOR DDR 8-HWSON
SG6901ASZ
IC PFC CTLR AVERAGE CURR 20SOIC
SG6932SZ
IC PFC CONTROLLER CCM 16SOP
相关代理商/技术参数
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
SC4-2 24VDC
制造商:PEPPERL+FUCHS 功能描述:Sensor, Machine Safety, Control Unit, 24VDC, 2 Channel, LED Display, 117230
SC420
功能描述:UPS - 不间断电源 420VA/260W 4 Outlet
RoHS:否 制造商:Phoenix Contact 功率额定值: 输出电压额定值:24 V 出口数量:2 运行时间（满载）: 运行时间（半载）:
SC4201
制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Multi-Phase Link Controller