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参数资料
| 型号： | LM2621EVAL/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 9/17页 |
| 文件大小： | 0K |
| 描述： | EVALUATION BOARD FOR LM2621 |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步升 |
| 输出及类型： | 1，非隔离 |
| 输入电压： | 1.2 ~ 14 V |
| 稳压器拓扑结构： | 升压 |
| 板类型： | 完全填充 |
| 已供物品： | 板，文档 |
| 已用 IC / 零件： | LM2621 |
Table 1. Suggested Manufacturers List
SNVS033C – MAY 2004 – REVISED MARCH 2005
Inductors
Coilcraft
Tel: (800) 322-2645
Fax: (708) 639-1469
Coiltronics
Tel: (407) 241-7876
Fax: (407) 241-9339
Pulse Engineering
Tel: (619) 674-8100
Fax: (619) 674-8262
Capacitors
Sprague/ Vishay
Tel: (207) 324-4140
Fax: (207) 324-7223
Kemet
Tel: (864) 963-6300
Fax: (864) 963-6521
Nichicon
Tel: (847) 843-7500
Fax: (847) 843-2798
Diodes
Motorola
Tel: (800) 521-6274
Fax: (602) 244-6609
International Rectifier (IR)
Tel: (310) 322-3331
Fax: (310) 322-3332
General Semiconductor
Tel: (516) 847-3222
Fax: (516) 847-3150
PC BOARD LAYOUT
High switching frequencies and high peak currents make a proper layout of the PC board an important part of
design. Poor design can cause excessive EMI and ground-bounce, both of which can cause malfunction and loss
of regulation by corrupting voltage feedback signal and injecting noise into the control section.
Power components - such as the inductor, input and output filter capacitors, and output diode - should be placed
as close to the regulator IC as possible, and their traces should be kept short, direct and wide. The ground pins
of the input and output filter capacitors and the PGND and SGND pins of LM2621 should be connected using
short, direct and wide traces. The voltage feedback network (R F1 , R F2 , and C F1 ) should be kept very close to the
FB pin. Noisy traces, such as from the SW pin, should be kept away from the FB and V DD pins. The traces that
run between V out and the FB pin of the IC should be kept away from the inductor flux. Always provide sufficient
copper area to dissipate the heat due to power loss in the circuitry and prevent the thermal protection circuitry in
the IC from shutting the IC down.
Copyright ? 2004–2005, Texas Instruments Incorporated
Product Folder Links: LM2621
9
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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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