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| 型号： | LT1375CS8-5#TR |
| 厂商： | Linear Technology |
| 文件页数： | 16/28页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 5V 1.5A 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 5V |
| 输入电压： | 5 V ~ 25 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 500kHz |
| 电流 - 输出： | 1.5A |
| 同步整流器： | 无 |
| 工作温度： | 0°C ~ 125°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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LT1375/LT1376
APPLICATIO N S I N FOR M ATIO N
(magnetic) radiation is minimized by keeping catch diode,
switch pin, and input bypass capacitor leads as short as
possible. E field radiation is kept low by minimizing the
length and area of all traces connected to the switch pin
and BOOST pin. A ground plane should always be used
under the switcher circuitry to prevent interplane cou-
pling. A suggested layout for the critical components is
the only one containing nanosecond rise and fall times. If
you follow this path on the PC layout, you will see that it is
irreducibly short. If you move the diode or input capacitor
away from the LT1376, get your resumé in order. The
other paths contain only some combination of DC and
500kHz triwave, so are much less critical.
shown in Figure 5. Note that the feedback resistors and
compensation components are kept as far as possible
SWITCH NODE
L1
5V
from the switch node. Also note that the high current
ground path of the catch diode and input capacitor are kept
very short and separate from the analog ground line.
V IN
HIGH
FREQUENCY
CIRCULATING
PATH
LOAD
The high speed switching current path is shown schemati-
cally in Figure 6. Minimum lead length in this path is
essential to ensure clean switching and low EMI. The path
including the switch, catch diode, and input capacitor is
INPUT
Figure 6. High Speed Switching Path
1375/76 F06
MINIMIZE AREA OF
CONNECTIONS TO THE
SWITCH NODE AND
C2
D2
BOOST NODE
C3
BOOST
IN
V C
FB
C C
R C
MINIMIZE SIZE OF
FEEDBACK PIN
CONNECTIONS TO
AVOID PICKUP
KEEP INPUT CAPACITOR
AND CATCH DIODE CLOSE
SW
GND
TO REGULATOR AND
TERMINATE THEM
D1
BIAS
SHDN
R1
R2
TO SAME POINT
TERMINATE
FEEDBACK RESISTORS
AND COMPENSATION
L1
COMPONENTS
C1
OUTPUT
SHUTDOWN
DIRECTLY TO SWITCHER
GROUND PIN
GROUND RING NEED
NOT BE AS SHOWN.
(NORMALLY EXISTS AS
INTERNAL PLANE)
CONNECT OUTPUT CAPACITOR
DIRECTLY TO HEAVY GROUND
TAKE OUTPUT DIRECTLY FROM END OF OUTPUT
CAPACITOR TO AVOID PARASITIC RESISTANCE
1375/76 F05
AND INDUCTANCE (KELVIN CONNECTION)
Figure 5. Suggested Layout
13756fd
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1375CS8PBF | 制造商:Linear Technology 功能描述:Sw. Regulator Step-Down 1.5A 500kHz SO8 |
| LT1375HV | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A, 500kHz Step-Down Switching Regulators |
| LT1375HVCS8 | 功能描述:IC REG BUCK ADJ 1.5A 8SOIC 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 |
| LT1375HVCS8#PBF | 功能描述:IC REG BUCK ADJ 1.5A 8SOIC 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:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 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:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT1375HVCS8#TR | 功能描述:IC REG BUCK ADJ 1.5A 8SOIC 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 |
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