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| 型号： | LM22674MRX-5.0/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 2/22页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 5V 0.5A 8PSOP |
| 产品培训模块： | SIMPLE SWITCHER® Regulators LM315x & LM2267x SIMPLE SWITCHER® and WEBENCH |
| 标准包装： | 2,500 |
| 系列： | SIMPLE SWITCHER® |
| 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： | 4.5 V ~ 42 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 500kHz |
| 电流 - 输出： | 500mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm Width）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-PSOP-EP |
| 配用： | 551600236-001-ND - WEBENCH BUILD IT LM2267X 8-PSOP |
| 其它名称： | LM22674MRX-5.0 |
SNVS590L – SEPTEMBER 2008 – REVISED APRIL 2013
Connection Diagram
BOOT
NC
NC
FB
1
2
3
4
8
7
6
5
SW
VIN
GND
EN
Exposed Pad
Connect to GND
Figure 1. 8-Lead Plastic SO PowerPAD Package
Package Number DDA0008B
PIN DESCRIPTIONS
Pins
1
2, 3
Name
BOOT
NC
Description
Bootstrap input
Not Connected
Application Information
Provides the gate voltage for the high side NFET.
Pins are not electrically connected to die. Pins do function as
thermal conductor.
4
5
FB
EN
Feedback pin
Precision enable pin
Feedback input to regulator.
Used to control regulator start-up and shutdown. See Precision
6
7
8
EP
GND
VIN
SW
EP
System ground
Source input voltage
Switch pin
Exposed Pad
System ground.
Input supply to regulator
Switching output of regulator
Connect to ground. Provides thermal connection to PCB. See
applications information.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings (1) (2)
VIN to GND
EN Pin Voltage
SW to GND (3)
BOOT Pin Voltage
FB Pin Voltage
Power Dissipation
Junction Temperature
For soldering specifications, refer to the following document: www.ti.com/lit/snoa549
43V
-0.5V to 6V
-5V to V IN
V SW + 7V
-0.5V to 7V
Internally Limited
150°C
ESD Rating (4)
Human Body Model
Storage Temperature Range
±2 kV
-65°C to +150°C
(1)
(2)
(3)
(4)
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of
device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or
other conditions beyond those indicated in the recommended Operating Ratings is not implied. The recommended Operating Ratings
indicate conditions at which the device is functional and should not be operated beyond such conditions.
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications
The absolute maximum specification of the ‘SW to GND’ applies to DC voltage. An extended negative voltage limit of -10V applies to a
pulse of up to 50 ns.
ESD was applied using the human body model, a 100 pF capacitor discharged through a 1.5 k ? resistor into each pin.
2
Product Folder Links: LM22674
Copyright ? 2008–2013, Texas Instruments Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM22674MRX-ADJ | 制造商:NSC 制造商全称:National Semiconductor 功能描述:500 mA SIMPLE SWITCHER?, Step-Down Voltage Regulator with Precision Enable |
| LM22674MRX-ADJ/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM22674QMR-5.0/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM22674QMR-ADJ/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM22674QMRE-5.0/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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