参数资料
型号: SC4525ASETRT
厂商: Semtech
文件页数: 15/19页
文件大小: 0K
描述: IC REG BUCK 3A 8SOIC
标准包装: 1
类型: 降压(降压)
输出数: 1
输入电压: 8 V ~ 28 V
PWM 型: 电流模式
频率 - 开关: 300kHz ~ 1.3MHz
电流 - 输出: 3A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm Width)裸露焊盘
包装: 标准包装
供应商设备封装: 8-SOIC-EP
产品目录页面: 1358 (CN2011-ZH PDF)
其它名称: SC4525ASEDKR
SC4525A
Applications Information (Cont.)
PCB Layout Considerations
In a step-down switching regulator, the input bypass
capacitor, the main power switch and the freewheeling
diode carry pulse current (Figure 9). For jitter-free
operation, the size of the loop formed by these components
should be minimized. Since the power switch is already
integrated within the SC4525A, connecting the anode of
the freewheeling diode close to the negative terminal of
the input bypass capacitor minimizes size of the switched
current loop. The input bypass capacitor should be placed
close to the IN pin. Shortening the traces of the SW and
BST nodes reduces the parasitic trace inductance at these
nodes. This not only reduces EMI but also decreases
switching voltage spikes at these nodes.
The exposed pad should be soldered to a large ground
plane as the ground copper acts as a heat sink for the
device. To ensure proper adhesion to the ground plane,
avoid using vias directly under the device.
V IN
V OUT
Z L
Figure 9. Heavy lines indicate the critical pulse
current loop. The inductance of this
loop should be minimized.
Vin
Curre nts in Power Section
 5
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SC4525C 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:28V 3A Step-Down Switching Regulator Thermal Shutdown
SC4525CSETRT 功能描述:IC REG BUCK ADJ 3A 8SOIC 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:250 系列:- 类型:降压(降压) 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON(1.45x1) 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2
SC4525D 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:18V, 3A, 350kHz Step-Down Switching Regulator
SC4525DEVB 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:18V, 3A, 350kHz Step-Down Switching Regulator
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