参数资料
型号: SC283WLTRT
厂商: Semtech
文件页数: 16/20页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 1.8A 18MLPQ
标准包装: 1
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 0.8 V ~ 3.3 V
输入电压: 2.9 V ~ 5.5 V
频率 - 开关: 2.5MHz
电流 - 输出: 1.8A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 18-WFQFN 裸露焊盘
包装: 标准包装
供应商设备封装: 18-MLPQ-W(2x3)
其它名称: SC283WLDKR
SC283
Applications Information (continued)
To estimate the required input capacitor, determine the
acceptable input ripple voltage and calculate the
minimum value required for C IN from Equation 6.
? ?
? ? 1 ? OUT ? ?
? ESR ? ? ? f OSC
C IN
=
V OUT
V IN
? ? V
? I OUT
? V IN ?
?
?
? V ?
(6)
The input capacitor RMS ripple current varies with the
input and output voltage. The maximum input capacitor
RMS current is found from Equation 7.
? ? 1 ? OUT
? ?
I CIN ( RMS ) =
V OUT
V IN
? V
? V IN
?
?
(7)
The input voltage ripple and RMS current ripple are at
a maximum when the input voltage is twice the output
voltage or 50% duty cycle.
The input capacitor provides a low impedance loop for
the edges of pulsed current drawn by the PMOS switch.
Low ESR/ESL X5R ceramic capacitors are recommended
for this function. To minimise stray inductance ,the
capacitor should be placed as closely as possible to the
VIN and GND pins of the SC283.
? 2010 Semtech Corp.
16
www.semtech.com
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参数描述
SC284 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Dual Channel 2.5MHz, 1.8A Synchronous Step-Down Regulator
SC284ULTRT 制造商:Semtech Corporation 功能描述:Conv DC-DC Dual Step Down 2.9V to 5.5V 20-Pin MLPQ EP T/R
SC28-6 制造商:Thomas & Betts 功能描述:IDENTIFICATION TAGS
SC286ULTRT 功能描述:IC REG BUCK SYNC ADJ 4A 28MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:1,000 系列:- 类型:降压(降压) 输出类型:可调式 输出数:1 输出电压:0.6 V ~ 4.5 V 输入电压:3 V ~ 5.5 V PWM 型:电流模式 频率 - 开关:3MHz 电流 - 输出:1.5A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 供应商设备封装:6-LLP-EP(3x3) 产品目录页面:1300 (CN2011-ZH PDF) 其它名称:LM2831ZSDLM2831ZSDTR
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