参数资料
型号: LT3958EUHE#PBF
厂商: Linear Technology
文件页数: 22/28页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ 36VQFN
特色产品: LT?3957/LT?3958 Converters
标准包装: 61
类型: 升压(升压),反相,回扫,Sepic
输出类型: 可调式
输出数: 1
输出电压: 1.6 V ~ 80 V
输入电压: 5 V ~ 80 V
PWM 型: 电流模式
频率 - 开关: 100kHz ~ 1MHz
电流 - 输出: 3.3A
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: 36-WFQFN 裸露焊盘
包装: 管件
供应商设备封装: 36-QFN-EP(6x5)
LT3958
APPLICATIONS INFORMATION
? In ?yback con?guration, the high di/dt primary loop
contains the input capacitor, the primary winding,
the internal power MOSFET. The high di/dt second-
ary loop contains the output capacitor, the secondary
winding and the output diode.
? In SEPIC con?guration, the high di/dt loop con-
tains the internal power MOSFET, output capacitor,
Schottky diode and the coupling capacitor.
? In inverting con?guration, the high di/dt loop con-
tains internal power MOSFET, Schottky diode and the
coupling capacitor.
Check the stress on the internal power MOSFET by measur-
ing the SW-to-GND voltage directly across the IC terminals.
Make sure the inductive ringing does not exceed the
maximum rating of the internal power MOSFET (84V).
The small-signal components should be placed away from
high frequency switching nodes. For optimum load regula-
tion and true remote sensing, the top of the output voltage
sensing resistor divider should connect independently to
the top of the output capacitor (Kelvin connection), staying
away from any high dV/dt traces. Place the divider resis-
tors near the LT3958 in order to keep the high impedance
FBX node short.
Figure 9 shows the suggested layout of the 48V V OUT boost
converter (see the Typical Applications section).
R1
C SS
VIA TO V OUT
R2
1
2
R T
36 35 34 33 32 31 30
R C
28
27
C C
C VCC
3
4
6
8
9
37
LT3958
38
25
24
23
21
20
R4
R3
10
12 13 14 15 16 17
L1
C OUT
C OUT
D1
C IN
GND
V OUT
VIA TO V OUT
V IN
3958 F09
VIAS TO SGND GROUND PLANE
VIAS TO SW PLANE
Figure 9. Suggested Layout of the 10V to 40V Input, 48V Output Boost Converter
3958f
22
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LT3958EUHETRPBF 制造商:LINER 制造商全称:Linear Technology 功能描述:High Input Voltage, Boost, Flyback, SEPIC and Inverting Converter
LT3958IUHE#PBF 功能描述:IC REG MULTI CONFIG ADJ 36VQFN 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
LT3958IUHE#TRPBF 功能描述:IC REG MULTI CONFIG ADJ 36VQFN 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
LT3958IUHEPBF 制造商:LINER 制造商全称:Linear Technology 功能描述:High Input Voltage, Boost, Flyback, SEPIC and Inverting Converter
LT3958IUHETRPBF 制造商:LINER 制造商全称:Linear Technology 功能描述:High Input Voltage, Boost, Flyback, SEPIC and Inverting Converter