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参数资料
| 型号： | LTC3521IFE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 8/22页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST SYNC ADJ 20TSSOP |
| 标准包装： | 2,500 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 3 |
| 输出电压： | 0.6 V ~ 5.5 V，1.8 V ~ 5.25 V |
| 输入电压： | 1.8 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1.1MHz |
| 电流 - 输出： | 600mA，1A |
| 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： | 20-TSSOP（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 20-TSSOP-EP |
LTC3521
PIN FUNCTIONS
(FE/UF Packages)
PV IN1 (Pin 13/Pin 11): High current power supply connec-
tion used to supply switch A of the buck-boost converter.
This pin should be bypassed by a 4.7μF, or larger, ceramic
cap. The bypass capacitor should be placed as close to
the pin as possible and should have a short return path
to ground. Pins V IN , PV IN1 , and PV IN2 must be connected
together in the application circuit.
NC (Pin 13, UF Package Only): No Internal Connection.
SW1B (Pin 14/Pin 14): Buck-Boost Switch Node. This pin
must be connected to one side of the buck-boost inductor.
SW1A (Pin 15/Pin 15): Buck-Boost Switch Node. This pin
must be connected to one side of the buck-boost inductor.
V OUT1 (Pin 16/Pin 16): Buck-Boost Output Voltage Node.
This pin should be connected to a low ESR ceramic ca-
pacitor. The capacitor should be placed as close to the
IC as possible and should have a short return to ground.
SW3 (Pin 17/Pin 17): Buck converter Switch Node. This
pin must be connected to the opposite side of the inductor
connected to V OUT3 .
PGND2 (Pin 18/Pin 18): High Current Ground Connection
for Both Buck Converters. The PCB trace connecting this pin
to ground should be made as short and wide as possible.
SW2 (Pin 19/Pin 20): Buck Converter Switch Node. This
pin must be connected to the opposite side of the inductor
connected to V OUT2 .
NC (Pin 19, UF Package Only): No Internal Connection.
PV IN2 (Pin 20/Pin 22): High Current Power Supply Connec-
tion Used to Supply the Buck Converter Power Switches.
This pin should be bypassed by a 10μF or larger ceramic
cap. The bypass capacitor should be placed as close to
the pin as possible and should have a short return path
to ground. Pins V IN , PV IN1 , and PV IN2 must be connected
together in the application circuit.
PGND1A (Exposed Pad Pin 21/Pin 21, Exposed Pad
Pin 25): High Current Ground Connection for the Buck-
Boost Switch B. The PCB trace connecting this pin to
ground should be made as short and wide as possible.
PGND1B (Pin 12, UF Package Only): High Current Ground
Connection for the Buck-Boost Switch C. The PCB trace
connecting this pin to ground should be made as short
and wide as possible.
8
For more information www.linear.com/LTC3521
3521fb
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| LTC3522EUD | 制造商:LINER 制造商全称:Linear Technology 功能描述:Synchronous 400mA Buck-Boost and 200mA Buck Converters |
| LTC3522EUD#PBF | 功能描述:IC REG BUCK BOOST SYNC ADJ 16QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:MIC23xxx HyperLight Load™ Regulators 标准包装:5,000 系列:HyperLight Load® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.8V 输入电压:2.7 V ~ 5.5 V PWM 型:混合物 频率 - 开关:4MHz 电流 - 输出:2A 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:8-VFDFN 裸露焊盘，8-MLF? 包装:带卷 (TR) 供应商设备封装:8-MLF?（2x2） 产品目录页面:1094 (CN2011-ZH PDF) 其它名称:576-3303-2 |
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