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参数资料
| 型号： | LM2639M/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 8700 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封装： | PLASTIC, SOIC-24 |
| 文件页数： | 11/11页 |
| 文件大小： | 198K |
| 代理商： | LM2639M/NOPB |
National P/N LM2639 - 5-Bit Programmable, High Frequency Multi-phase PWM Controller
LM2639 Product Folder
5-Bit Programmable, High Frequency Multi-phase PWM Controller
Generic P/N 2639
Parametric Table
Multiple Output Capability
No
On/Off Pin
Yes
Error Flag
Yes
Input Voltage, min (Volt)
4.75
Input Voltage, max (Volt)
5.25
Output Current, max
Set by External FET
Output Voltage (Volt)
-
Adjustable Output Voltage
Yes
Switching Frequency (Hz)
8000000
Adjustable Switching Frequency
Yes
Sync Pin
Yes
Efficiency (%)
-
Flyback
No
Inverting
No
Step-Up
No
Step-Down
Yes
Datasheet
Title
Size in
Kbytes Date
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LM2639 5-Bit Programmable, High Frequency Multi-
phase PWM Controller
151
Kbytes
3-
Feb-
00
LM2639 5-Bit Programmable, High Frequency Multi-
phase PWM Controller (JAPANESE)
390
Kbytes
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Package Availability, Models, Samples & Pricing
Part Number
Package
Status
Models
Samples &
Electronic
Orders
Budgetary Pricing
Std
Pack
Size
Type Pins MSL
SPICE IBIS
Qty
$US each
LM2639EVAL
evaluation board
Full
production
N/A
1+
$100.0000
1
-
file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM2639.html (1 of 3) [Aug-09-2002 2:39:11 PM]
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2639MX | 制造商:Texas Instruments 功能描述: |
| LM2639MX/NOPB | 功能描述:IC CTRLR MULTIPHASE PWM 24-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| LM2640 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Dual Adjustable Step-Down Switching Power Supply Controller |
| LM26400Y | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Dual 2A, 500kHz Wide Input Range Buck Regulator |
| LM26400Y_0708 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Dual 2A, 500kHz Wide Input Range Buck Regulator |
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