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参数资料
| 型号： | LM5009SDX |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 150 mA, 100V Step-Down Switching Regulator |
| 中文描述： | 0.37 A SWITCHING REGULATOR, DSO8 |
| 封装： | 4 X 4 MM, EXPOSED PAD, LLP-8 |
| 文件页数： | 8/14页 |
| 文件大小： | 647K |
| 代理商： | LM5009SDX |
Pin Descriptions
Pin
Name
Description
Application Information
1
SW
Switching output
Power switching output. Connect to the inductor,
re-circulating diode, and bootstrap capacitor.
2
BST
Boost Pin
An external capacitor is required between the BST
and the SW pins. A 0.01F ceramic capacitor is
recommended. An internal diode charges the
capacitor from V
CC.
3
RCL
Current Limit off-time set pin
A resistor between this pin and RTN sets the
off-time when current limit is detected. The off-time
is preset to 35s if FB = 0V.
4
RTN
Ground pin
Ground for the entire circuit.
5
FB
Feedback input from Regulated Output
This pin is connected to the inverting input of the
internal regulation comparator. The regulation
threshold is 2.5V.
6
RON/SD
On-time set pin
A resistor between this pin and VIN sets the switch
on-time as a function of V
IN. The minimum
recommended on-time is 250ns at the maximum
input voltage. This pin can be used for remote
shutdown.
7
VCC
Output from the internal high voltage startup
regulator. Regulated at 7.0V.
If an auxiliary voltage is available to raise the
voltage on this pin above the regulation setpoint
(7V), the internal series pass regulator will
shutdown, reducing the IC power dissipation. Do not
exceed 14V. This voltage provides gate drive power
for the internal Buck switch. An internal diode is
provided between this pin and the BST pin. A local
0.1F decoupling capacitor is required.
8
VIN
Input voltage
Recommended operating range: 9.5V to 95V.
EP
Exposed Pad (LLP Package only)
Exposed metal pad on the underside of the device.
It is recommended to connect this to the PC board
ground plane to aid in heat dissipation.
LM5009
www.national.com
3
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| LM5009SDX/NOPB | 功能描述:IC REG BUCK ADJ 0.15A 8LLP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:PowerWise® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:3.3V 输入电压:4.5 V ~ 24 V PWM 型:- 频率 - 开关:- 电流 - 输出:125mA 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:SOT-23-6 包装:Digi-Reel® 供应商设备封装:SOT-6 其它名称:MAX1836EUT33#TG16DKR |
| LM500-AN-2K | 功能描述:基本/快动开关 Enclosed BasicSwitch RoHS:否 制造商:Omron Electronics 触点形式:SPDT 执行器:Lever 电流额定值:5 A 电压额定值 AC:250 V 电压额定值 DC:30 V 功率额定值: 工作力:120 g IP 等级:IP 67 NEMA 额定值: 端接类型:Wire 安装:Panel |
| LM500SD-6/NOPB | 制造商:Texas Instruments 功能描述: |
| LM500Z | 制造商:SEOUL 制造商全称:Seoul Semiconductor 功能描述:GREEN OVAL LAMP LED |
| LM501 | 制造商:SEOUL 制造商全称:Seoul Semiconductor 功能描述:CYAN LAMP LED |
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