参数资料
型号: LTC3412IFE#TRPBF
厂商: Linear Technology
文件页数: 14/20页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 16TSSOP
标准包装: 2,500
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.8 V ~ 5 V
输入电压: 2.63 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 950kHz
电流 - 输出: 2.5A
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: 16-TSSOP(0.173",4.40mm)裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 16-TSSOP-EP
LTC3412
APPLICATIO S I FOR ATIO
If we set the sum of R2 and R3 to 185k, then the following
equations can be solved:
R 2 + R 3 = 185 k
1. A ground plane is recommended. If a ground plane layer
is not used, the signal and power grounds should be
segregated with all small-signal components returning to
the SGND pin at one point which is then connected to the
R 2
1 + =
R 3
0 . 8 V
0 . 32 V
PGND pin close to the LTC3412. The exposed pad should
be connected to SGND.
The last two equations shown result in the following
values for R2 and R3: R2 = 110k , R3 = 75k. The value of
R1 can now be determined by solving the equation shown
below:
2. Connect the (+) terminal of the input capacitor(s), C IN ,
as close as possible to the PV IN pin. This capacitor
provides the AC current into the internal power MOSFETs.
3. Keep the switching node, SW, away from all sensitive
small-signal nodes.
R 1
1 + =
185 k
R 1 = 393 k
2 . 5 V
0 . 8 V
4. Flood all unused areas on all layers with copper. Flood-
ing with copper will reduce the temperature rise of power
components. You can connect the copper areas to any DC
A value of 392k will be selected for R1. Figure 4 shows the
complete schematic for this design example.
PC Board Layout Checklist
When laying out the printed circuit board, the following
checklist should be used to ensure proper operation of the
LTC3412. Check the following in your layout.
Top Side
net (PV IN , SV IN , V OUT , PGND, SGND, or any other DC rail
in your system).
5. Connect the V FB pin directly to the feedback resistors.
The resistor divider must be connected between V OUT and
SGND.
Bottom Side
Figure 3. LTC3412 Layout Diagram
3412fb
14
相关PDF资料
PDF描述
LTC3413IFE#TRPBF IC REG BUCK SYNC ADJ 3A 16TSSOP
LTC3414MPFE#TRPBF IC REG BUCK SYNC ADJ 4A 20TSSOP
LTC3415EUHF#TRPBF IC REG BUCK SYNC ADJ 7A 38QFN
LTC3416EFE#TRPBF IC REG BUCK SYNC ADJ 4A 20TSSOP
LTC3417AIFE-1#TRPBF IC REG BUCK SYNC ADJ DL 20TSSOP
相关代理商/技术参数
参数描述
LTC3413 制造商:LINER 制造商全称:Linear Technology 功能描述:3A, 2MHz Monolithic Synchronous Regulator for DDR/QDR Memory Termination
LTC3413EFE 功能描述:IC REG BUCK SYNC ADJ 3A 16TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压(升压) 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型,TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT
LTC3413EFE#PBF 功能描述:IC REG BUCK SYNC ADJ 3A 16TSSOP 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
LTC3413EFE#TR 功能描述:IC REG BUCK SYNC ADJ 3A 16TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压(升压) 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型,TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT
LTC3413EFE#TRPBF 功能描述:IC REG BUCK SYNC ADJ 3A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压(升压) 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型,TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT