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參數(shù)資料
| 型號(hào)： | SC418ULTRT |
| 廠商： | Semtech |
| 文件頁(yè)數(shù)： | 11/30頁(yè) |
| 文件大小： | 691K |
| 描述： | IC REG DL BUCK/LINEAR 20MLPQ |
| 產(chǎn)品培訓(xùn)模塊： | Power Supplies 101 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | EcoSpeed® |
| 拓?fù)洌?/td> | 降壓（降壓）（1），線性（LDO）（1） |
| 功能： | 任何功能 |
| 輸出數(shù)： | 2 |
| 頻率 - 開(kāi)關(guān)： | 1MHz |
| 電壓/電流 - 輸出 1： | 控制器 |
| 電壓/電流 - 輸出 2： | 0.75 V ~ 5.25 V，200mA |
| 帶 LED 驅(qū)動(dòng)器： | 無(wú) |
| 帶監(jiān)控器： | 無(wú) |
| 帶序列發(fā)生器： | 無(wú) |
| 電源電壓： | 3 V ~ 28 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 20-MLPQ |
| 供應(yīng)商設(shè)備封裝： | 20-MLPQ（3x3） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | 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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| SC419ULTRT | 功能描述:IC REG CTRLR BUCK PWM 20-MLPQ RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:EcoSpeed®, SmartDrive™ 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤(pán) 包裝:Digi-Reel® 產(chǎn)品目錄頁(yè)面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR |
| SC41E6 | 制造商:INFINEON 制造商全稱: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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