参数资料
型号: LTC3531EDD#PBF
厂商: Linear Technology
文件页数: 7/16页
文件大小: 0K
描述: IC REG BUCK BOOST SYNC ADJ 8DFN
标准包装: 121
类型: 降压(降压),升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 2 V ~ 5 V
输入电压: 1.8 V ~ 5.5 V
PWM 型: Burst Mode?
电流 - 输出: 200mA
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: 8-WFDFN 裸露焊盘
包装: 管件
供应商设备封装: 8-DFN-EP(3x3)
产品目录页面: 1335 (CN2011-ZH PDF)
LTC3531/
LTC3531-3.3/LTC3531-3
PI FU CTIO S
ThinSOT/DFN Packages
SW2 (Pin 1/Pin 7): Buck-Boost Switch Pin Where Internal
Switches C and D are Connected. An optional Schottky
diode can be connected from SW2 to V OUT for a moderate
ef?ciency improvement. Minimize trace length to keep
EMI down.
GND (Pin 2/Pin 3): Signal Ground for the IC.
V IN (Pin 5/Pin 2): Input Supply Pin for the Buck-Boost
Converter. A minimum 2.2μF Ceramic Capacitor should
be placed between V IN and GND.
FB (NA/Pin 5): Feedback Pin for the Adjustable Version.
Connect the resistor divider tap here. The output voltage
can be adjusted from 2V to 5V.
V OUT = 1 . 225 ? 1 +
PGND (Pin 2/Pin 8): Power Ground for the IC. (Shared
on ThinSOT version)
?
?
R2 ?
R 1 ? ?
V OUT (Pin 3/Pin 6): Output of the Buck-Boost Synchronous
Recti?er. A ?lter capacitor is placed from V OUT to GND.
A ceramic bypass capacitor is recommended as close to
the V OUT and GND pins as possible.
SHDN (Pin 4/Pin 4): External Shutdown Pin. An applied
voltage of < 0.4V shuts down the converter. A voltage
SW1 (Pin 6/Pin 1): Buck-Boost Switch Pin Where Internal
Switches A and B are Connected. Connect the inductor
from SW1 to SW2.
Exposed Pad (Pin 9, DFN): Solder to PCB ground for
optimal thermal performance.
above >1.4V will enable the converter.
3531fb
7
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