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参数资料
| 型号： | LM2621MDC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2.85 A SWITCHING REGULATOR, 2000 kHz SWITCHING FREQ-MAX, UUC |
| 封装： | DIE |
| 文件页数： | 4/13页 |
| 文件大小： | 306K |
| 代理商： | LM2621MDC |
National P/N LM2621 - Low Input Voltage, Step-Up DC-DC
Part Number
Package
Status
Models
Samples &
Electronic
Orders
Budgetary Pricing
Std
Pack
Size
Type
Pins MSL
SPICE IBIS
Qty
$US each
LM2621EVAL
evaluation board
Full production
N/A
1+
$20.0000
1
-
LM2621MM
8
MSL Full production N/A
N/A
1K+
$1.7900
reel
of
1000
Z1T
S06A
LM2621MMX
8
MSL Full production N/A
N/A
1K+
$1.7900
reel
of
3500
Z1T
S06A
LM2621 MDC
Full production
N/A
N/A Samples
gel pak
of
N/A
-
LM2621 MWC
Full production
N/A
wafer jar
of
N/A
-
General Description
The LM2621 is a high efficiency, step-up DC-DC switching regulator for battery-powered and low input
voltage systems. It accepts an input voltage between 1.2V and 14V and converts it into a regulated output
voltage. The output voltage can be adjusted between 1.24V and 14V. It has an internal 0.17Ohm N-Channel
MOSFET power switch. Efficiencies up to 90% are achievable using the LM2621.
The high switching frequency (adjustable up to 2MHz) of the LM2621 allows for tiny surface mount inductors
and capacitors. Because of the unique constant-duty-cycle gated oscillator topology very high efficiencies are
realized over a wide load range. The supply current is reduced to 80A because of the BiCMOS process
technology. In the shutdown mode, the supply current is less than 2.5A.
The LM2621 is available in a Mini-SO-8 package. This package uses half the board area of a standard 8-pin
SO and has a height of just 1.09 mm.
Features
q
Small Mini-SO8 Package (Half the Footprint of Standard 8-Pin SO Package)
q
1.09 mm Package Height
q
Up to 2 MHz Switching Frequency
q
1.2V to 14V Input Voltage
q
1.24V - 14V Adjustable Output Voltage
q
Up to 1A Load Current
q
0.17 Ohm Internal MOSFET
q
Up to 90% Regulator Efficiency
q
80 A Typical Operating Current
q
<2.5A Guaranteed Supply Current In Shutdown
Applications
file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM2621.html (2 of 3) [Aug-09-2002 2:35:56 PM]
相关PDF资料 |
PDF描述 |
|---|---|
| LM2622-ADJMWC | 2.3 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, UUC |
| LM2630MTC-ADJ/NOPB | SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO20 |
| LM2630MTC-ADJX | SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO20 |
| LM2631MTCX-ADJ/NOPB | SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO20 |
| LM2636MWC | SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, UUC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2621MM | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| LM2621MM | 制造商:Texas Instruments 功能描述:DC/DC UP CONVERTER ADJ SMD 2621 |
| LM2621MM/NOPB | 功能描述:DC/DC 开关控制器 LOW INP VLTG,STEP-UP DC-DC RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| LM2621MM/NOPB | 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu |
| LM2621MMX | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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