参数资料
| 型号： | LT1936HMS8E#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 15/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 1.4A 8MSOP |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.2 V ~ 31.3 V |
| 输入电压： | 3.6 V ~ 36 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 500kHz |
| 电流 - 输出： | 1.4A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-MSOP-EP |
LT1936
APPLICATIONS INFORMATION
Hot Plugging Safely
The small size, robustness and low impedance of ceramic
capacitors make them an attractive option for the input
bypass capacitor of LT1936 circuits. However, these capaci-
tors can cause problems if the LT1936 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 V IN pin of the LT1936 can ring to twice the nominal
CLOSING SWITCH
input voltage, possibly exceeding the LT1936’s rating and
damaging the part. If the input supply is poorly controlled
or the user will be plugging the LT1936 into an energized
supply, the input network should be designed to prevent
this overshoot.
Figure 8 shows the waveforms that result when an LT1936
circuit is connected to a 24V supply through six feet of
24-gauge twisted pair. The ?rst plot is the response with
a 4.7μF ceramic capacitor at the input. The input voltage
rings as high as 50V and the input current peaks at 26A.
DANGER
+
SIMULATES HOT PLUG
I IN
V IN
LT1936
4.7μF
V IN
20V/DIV
RINGING V IN MAY EXCEED
ABSOLUTE MAXIMUM
RATING OF THE LT1936
LOW
IMPEDANCE
ENERGIZED
24V SUPPLY
STRAY
INDUCTANCE
DUE TO 6 FEET
(2 METERS) OF
TWISTED PAIR
LT1936
I IN
10A/DIV
(8a)
V IN
20V/DIV
20μs/DIV
+
+
22μF
35V
AI.EI.
0.1μF
+
0.7Ω
4.7μF
LT1936
4.7μF
I IN
10A/DIV
(8b)
V IN
20V/DIV
I IN
10A/DIV
20μs/DIV
(8c)
20μs/DIV
1936 F08
Figure 8. A Well Chosen Input Network Prevents Input Voltage Overshoot and
Ensures Reliable Operation When the LT1936 is Connected to a Live Supply
1936fd
15
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1936IMS8E | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 3.6V to 36V 8-Pin MSOP EP |
| LT1936IMS8E#PBF | 功能描述:IC REG BUCK ADJ 1.4A 8MSOP 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: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 |
| LT1936IMS8E#TRPBF | 功能描述:IC REG BUCK ADJ 1.4A 8MSOP 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: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 |
| LT1936IMS8EPBF | 制造商:Linear Technology 功能描述:Switching Regulator 1.4A 500kHz MSOP8EP |
| LT1936IMS8E-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.4A, 500kHz Step-Down Switching Regulator |
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