参数资料
型号: LM22673MRX-5.0/NOPB
厂商: National Semiconductor
文件页数: 2/27页
文件大小: 0K
描述: IC REG BUCK 5V 3A 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: 3A
同步整流器:
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
LM22673EVAL/NOPB-ND - BOARD EVALUATION FOR LM22673
其它名称: LM22673MRX-5.0
SNVS586N – SEPTEMBER 2008 – REVISED APRIL 2013
Connection Diagram
BOOT
NC
IADJ
FB
1
2
3
4
8
7
6
5
SW
VIN
GND
SS
Exposed Pad
Connect to GND
Figure 1. 8-Lead Plastic SO PowerPAD Package
Package Number DDA0008B
7 SS
6 FB
5 IADJ
4 GND
3 BOOT
2 VIN
1 SW
Exposed Pad
Connect to GND
Figure 2. 7-Lead Plastic PFM Package
Package Number NDR0007A
PIN DESCRIPTIONS
Pin Numbers
SO PowerPAD
Package
1
2
Pin Numbers
PFM Package
3
-
Name
BOOT
NC
Description
Bootstrap input
Not Connected
Application Information
Provides the gate voltage for the high side NFET.
Pin is not electrically connected inside the chip. Pin does
function as thermal conductor.
3
5
IADJ
Current limit adjust input pin
A resistor attached between this pin and GND can be
used to set the current limit threshold. Pin can be left
floating and internal setting will be default.
4
5
6
7
FB
SS
Feedback input
Soft-Start pin
Feedback input to regulator.
Used to increase soft-start time. See Soft-Start section
of data sheet.
6
4
GND
Ground input to regulator; system System ground pin.
common
7
8
EP
2
1
EP
VIN
SW
EP
Input voltage
Switch output
Exposed Pad
Supply input to the regulator.
Switching output of regulator.
Connect to ground. Provides thermal connection to PCB.
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.
2
Product Folder Links: LM22673
Copyright ? 2008–2013, Texas Instruments Incorporated
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