参数资料
型号: LT3472EDD#TRPBF
厂商: Linear Technology
文件页数: 9/12页
文件大小: 0K
描述: IC REG BOOST INV ADJ 50MA 10DFN
标准包装: 2,500
类型: 升压(升压),反相
输出类型: 可调式
输出数: 1
输出电压: 可调至 ±34V
输入电压: 2.2 V ~ 16 V
PWM 型: 电流模式
频率 - 开关: 1.1MHz
电流 - 输出: 50mA
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: 10-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 10-DFN(3x3)
LT3472
APPLICATIO S I FOR ATIO
the sum of the two outputs is always positive. The se-
quencing is shown in Figure 6.
Board Layout Consideration
As with all switching regulators, careful attention must be
paid to the PCB board layout and component placement.
To maximize efficiency, switch rise and fall times are made
as short as possible. To prevent electromagnetic interfer-
V POS
5V/DIV
ence (EMI) problems, proper layout of the high frequency
switching path is essential. The voltage signals of the SWP
and SWN pins have rise and fall times of a few ns. Minimize
the length and area of all traces connected to the SWP and
SWN pins and always use a ground plane under the
switching regulator to minimize interplane coupling. Rec-
ommended component placement is shown in Figure 7.
C OP
C IN
L P
R FBP
C FBP
C SSP
V NEG
5V/DIV
L N1
V SHDN
5V/DIV
100 μ s/DIV
3472 FO6
C NF
R FBN
C FBN
C SSN
Figure 6. Start-Up Sequencing
L N2
C ON
3472 F06
Figure 7. Recommended Component Placement
3472f
9
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LT3473AEDE#PBF 功能描述:IC REG BOOST ADJ 1A 12DFN 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:2,500 系列:- 类型:降压(降压) 输出类型:固定 输出数:1 输出电压:1.2V,1.5V,1.8V,2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP,10-MSOP(0.118",3.00mm 宽)裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘
LT3473AEDE#TRPBF 功能描述:IC REG BOOST ADJ 1A 12DFN 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:2,500 系列:- 类型:升压(升压) 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式,混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC(0.154",3.90mm 宽) 包装:带卷 (TR) 供应商设备封装:8-SOIC