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参数资料
| 型号： | LT1934IDCB-1#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.49 A SWITCHING REGULATOR, PDSO6 |
| 封装： | 2 X 3 MM, 0.80 MM HEIGHT, LEAD FREE, PLASTIC, MO-229, DFN-6 |
| 文件页数： | 5/20页 |
| 文件大小： | 234K |
| 代理商： | LT1934IDCB-1#PBF |
LT1934/LT1934-1
13
1934fe
APPLICATIONS INFORMATION
and ground traces will shield it from the SW and BOOST
nodes. Figure 6 shows component placement with trace,
ground plane and via locations. Include two vias near
the GND pin of the LT1934 to help remove heat from the
LT1934 to the ground plane.
Hot Plugging Safely
The small size, robustness and low impedance of ceramic
capacitors make them an attractive option for the input
bypass capacitor of LT1934 and LT1934-1 circuits. How-
ever, these capacitors can cause problems if the LT1934
is plugged into a live supply (see Linear Technology
Application Note 88 for a complete discussion). The low
loss ceramic capacitor combined with stray inductance in
series with the power source forms an under damped tank
circuit, and the voltage at the VIN pin of the LT1934 can
ring to twice the nominal input voltage, possibly exceeding
the LT1934’s rating and damaging the part. If the input
supply is poorly controlled or the user will be plugging
the LT1934 into an energized supply, the input network
should be designed to prevent this overshoot.
Figure 6. A Good PCB Layout Ensures Proper, Low EMI Operation
SHUTDOWN
VIAS TO LOCAL GROUND PLANE
OUTLINE OF LOCAL GROUND PLANE
VIN
VOUT
1934 F06
SYSTEM
GROUND
Figure 5. Subtracting the Current When the Switch is On (a) from the Current When the Switch is Off (b) Reveals the Path of the High
Frequency Switching Current (c). Keep This Loop Small. The Voltage on the SW and BOOST Nodes Will Also be Switched; Keep These
Nodes as Small as Possible. Finally, Make Sure the Circuit is Shielded with a Local Ground Plane
VIN
SW
GND
(5a)
VIN
VSW
C2
D1
C1
1934 F05
L1
SW
GND
(5c)
VIN
SW
GND
(5b)
IC1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1934IS6 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Step-Down Switching Regulators in ThinSOT |
| LT1934IS6#PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 3.2V to 34V 6-Pin TSOT-23 制造商:Linear Technology 功能描述:SP-SWREG/Monolithic, Cut Tape 300mA (Iout), Micropower Step-Down |
| LT1934IS6#TR | 功能描述:IC REG BUCK ADJ 0.3A SOT23-6 RoHS:否 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 |
| LT1934IS6#TRM | 功能描述:IC REG BUCK ADJ 0.3A SOT23-6 RoHS:否 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 |
| LT1934IS6#TRMPBF | 功能描述:IC REG BUCK ADJ 0.3A SOT23-6 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 |
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