- 您现在的位置：买卖IC网 > PDF目录98000 > LM2984MDC (NATIONAL SEMICONDUCTOR CORP) 1-CHANNEL POWER SUPPLY SUPPORT CKT, UUC PDF资料下载
参数资料
| 型号： | LM2984MDC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, UUC |
| 封装： | DIE |
| 文件页数： | 13/16页 |
| 文件大小： | 317K |
| 代理商： | LM2984MDC |
Block Diagram
TLH8821 – 2
Pin Description
Pin No
Pin Name
Comments
1VIN
Positive supply input voltage
2Rt
Sets internal timing currents
3Ct
Sets power-up reset delay timing
4
m
Pmon
Microcomputer monitor input
5Cmon
Sets mC monitor timing
6
Ground
Regulator ground
7
Reset
Reset error flag output
8
ONOFF
Enablesdisables high current regulators
9Vstandby
Standby regulator output (75 mA)
10
Vbuffer
Buffer regulator output (100 mA)
11
VOUT
Main regulator output (500 mA)
External Components
Component
Typical Value
Component Range
Comments
CIN
1 mF
047 mF–10 mF
Required if device is located far from power supply filter
Rt
130k
24k – 12M
Sets internal timing currents
Ct
033 mF
0033 mF – 33 mF
Sets power-up reset delay
Ctc
001 mF
0001 mF – 01 mF
Establishes time constant of AC coupled computer monitor
Rtc
10k
1k – 100k
Establishes time constant of AC coupled computer monitor (See
applications section)
Cmon
047 mF
0047 mF – 47 mF
Sets time window for computer monitor Also determines period and pulse
width of computer malfunction reset (See applications section)
Rrst
10k
5k – 100k
Load for open collector reset output Determined by computer reset input
requirements
Cstby
10 mF10 mF – no bound
A 10 mF is required for stability but larger values can be used to maintain
regulation during transient conditions
Cbuf
10 mF10 mF – no bound
A 10 mF is required for stability but larger values can be used to maintain
regulation during transient conditions
COUT
10 mF10 mF – no bound
A 10 mF is required for stability but larger values can be used to maintain
regulation during transient conditions
6
相关PDF资料 |
PDF描述 |
|---|---|
| LM3207TL/NOPB | 1.2 A SWITCHING REGULATOR, 2300 kHz SWITCHING FREQ-MAX, PBGA9 |
| LM3218SE | SWITCHING REGULATOR, DSO8 |
| LM3350MWC | SWITCHED CAPACITOR CONVERTER, 1100 kHz SWITCHING FREQ-MAX, UUC |
| LM336BZ-5.0/NOPB | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, PBCY3 |
| LM336Z-2.5/T7 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.49 V, PBCY3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2984T | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LM2984T/NOPB | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LM2990J-12-QML | 制造商:National Semiconductor Corporation 功能描述:LDO Regulator Neg -12V 1.8A 16-Pin CDIP Tray 制造商:National Semiconductor 功能描述:LDO Regulator Neg -12V 1.8A 16-Pin CDIP Tray |
| LM2990J-15-QML | 制造商:Texas Instruments 功能描述:LDO Regulator Neg -15V 1.8A 16-Pin CDIP Tray |
| LM2990J-5.0-QM | 制造商:National Semiconductor Corporation 功能描述:LDO Regulator Neg -5V 1.8A 16-Pin CDIP Rail 制造商:National Semiconductor 功能描述:LDO Regulator Neg -5V 1.8A 16-Pin CDIP Rail |
发布紧急采购，3分钟左右您将得到回复。