参数资料
型号: LTC3613IWKH#TRPBF
厂商: Linear Technology
文件页数: 28/36页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 15A 56QFN
标准包装: 2,000
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.6 V ~ 5.5 V
输入电压: 4.5 V ~ 24 V
PWM 型: 电流模式
频率 - 开关: 200kHz ~ 1MHz
电流 - 输出: 15A
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: 56-VFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 56-QFN 多焊盘(7x9)
LTC3613
APPLICATIONS INFORMATION
? Place the BOOST, PV IN , SW, and PGND pins facing the
power train components. Keep high dV/dt signals on
BOOST and SW away from sensitive small-signal traces
and components.
? For R SENSE current sensing, place the sense resistor
close to the inductor on the output side. Use a Kelvin
(4-wire) connection across the sense resistor and
route the traces together as a differential pair. RC filter
the differential sense signal close to SENSE + /SENSE –
pins, placing the filter capacitor as close as possible
to the pins. For DCR sensing, Kelvin connect across
the inductor and place the DCR sensing resistor closer
to the SW node and further away from the SENSE + /
SENSE – pins. Place the DCR capacitor close to the
SENSE + /SENSE – pins.
? Place the ceramic C VCC capacitor as close as possible to
the INTV CC and PGND pins. Likewise, the C B capacitor
should be as close as possible to BOOST and SW pins.
These capacitors provide the gate charging currents for
the onboard power MOSFETs.
? Place small-signal components as close to their respec-
tive pins as possible. This minimizes the possibility of
PCB noise coupling into these pins. Give priority to
V OSNS+ /V OSNS– , SENSE + /SENSE – , ITH, RT and V RNG
pins. Use sufficient isolation when routing a clock signal
into MODE/PLLIN pin so that the clock does not couple
into sensitive small-signal pins.
? Filter the SV IN input to the LTC3613 with a simple RC
filter close to the pin. The RC filter should be referenced
to signal ground.
? Place the resistive feedback divider R FB1/2 as close as
possible to V OSNS+ /V OSNS– pins and route the remote
output and ground traces together as a differential
pair and terminate as close to the regulation point as
possible (preferably Kelvin connect across the capacitor
at the remote output point).
3613fa
28
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LTC3613IWKH#PBF IC REG BUCK SYNC ADJ 15A 56QFN
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