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| 型号： | LM22673EVAL/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 4/27页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR LM22673 |
| 产品培训模块： | LM315x & LM2267x SIMPLE SWITCHER® and WEBENCH |
| 标准包装： | 1 |
| 系列： | SIMPLE SWITCHER® |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 3.3V |
| 电流 - 输出： | 3A |
| 输入电压： | 4.5 ~ 42 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 500kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | LM22673 |
| 相关产品： | LM22673TJ-ADJ/NOPBTR-ND - IC REG BUCK ADJ 3A TO263-7 LM22673TJ-5.0-ND - IC REG BUCK 5V 3A TO263-7 LM22673MRX-ADJ-ND - IC REG BUCK ADJ 3A 8PSOP LM22673MR-ADJ/NOPB-ND - IC REG BUCK ADJ 3A 8PSOP LM22673MRX-5.0-ND - IC REG BUCK 5V 3A 8PSOP LM22673MR-5.0/NOPB-ND - IC REG BUCK 5V 3A 8PSOP LM22673TJE-ADJDKR-ND - IC REG BUCK ADJ 3A TO263-7 LM22673TJE-5.0DKR-ND - IC REG BUCK 5V 3A TO263-7 LM22673MRE-ADJDKR-ND - IC REG BUCK ADJ 3A 8PSOP LM22673MRE-5.0DKR-ND - IC REG BUCK 5V 3A 8PSOP 更多... |
| 其它名称： | *LM22673EVAL LM22673EVAL LM22673EVAL-ND |
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SNVS586N – SEPTEMBER 2008 – REVISED APRIL 2013
Electrical Characteristics
Limits in standard type are for T J = 25°C only; limits in boldface type apply over the junction temperature (T J ) range of -40°C
to +125°C. Minimum and Maximum limits are ensured through test, design, or statistical correlation. Typical values represent
the most likely parametric norm at T A = T J = 25°C, and are provided for reference purposes only. Unless otherwise specified:
V IN = 12V.
Symbol
Parameter
Conditions
Min (1)
Typ (2)
Max (1)
Units
LM22673-5.0
V FB
Feedback Voltage
V IN = 8V to 42V
4.925/ 4.9
5.0
5.075/ 5.1
V
LM22673-ADJ
V FB
Feedback Voltage
V IN = 4.7V to 42V
1.266/ 1.259
1.285
1.304/ 1.311
V
All Output Voltage Versions
I Q
V ADJ
I CL
R DS(ON)
Quiescent Current
Current Limit Adjust Voltage
Current Limit
Switch On-Resistance
V FB = 5V
PFM Package
0.65
3.4/ 3.35
3.4
0.8
4.2
0.12
6
0.9
5.3/ 5.5
0.16/ 0.22
mA
V
A
?
SO PowerPAD Package
0.10
0.16/ 0.20
f O
T OFFMIN
T ONMIN
I BIAS
Oscillator Frequency
Minimum Off-time
Minimum On-time
Feedback Bias Current
V FB = 1.3V (ADJ Version Only)
400
100
500
200
100
230
600
300
kHz
ns
ns
nA
I SS
Soft-start Current
EN Input = 0V
30
50
70
μA
T SD
Thermal Shutdown Threshold
150
°C
θ JA
θ JA
Thermal Resistance
Thermal Resistance
TJ package, junction to ambient
thermal resistance (3)
MR Package, junction to ambient
thermal resistance (4)
22
60
°C/W
°C/W
(1)
(2)
(3)
(4)
Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate TI's Average Outgoing Quality Level (AOQL).
Typical values represent most likely parametric norms at the conditions specified and are not ensured.
The value of θ JA for the PFM (TJ) package of 22°C/W is valid if package is mounted to 1 square inch of copper. The θ JA value can
range from 20 to 30°C/W depending on the amount of PCB copper dedicated to heat transfer. See application note AN-1797 ( SNVA328 )
for more information.
The value of θ JA for the SO PowerPAD exposed pad (MR) package of 60°C/W is valid if package is mounted to 1 square inch of copper.
The θ JA value can range from 42 to 115°C/W depending on the amount of PCB copper dedicated to heat transfer.
4
Product Folder Links: LM22673
Copyright ? 2008–2013, Texas Instruments Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM22673MR-5.0 | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Inv/Step Down 4.5V to 42V 8-Pin PSOP EP Rail |
| LM22673MR-5.0/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM22673MR-ADJ | 制造商:Texas Instruments 功能描述:REGULATOR, ADJ. VOLTAGE, 3A 8PSOP 制造商:Texas Instruments 功能描述:REGULATOR, ADJ. VOLTAGE, 3A 8PSOP; Primary Input Voltage:42V; No. of Outputs:1; Output Current:3A; Voltage Regulator Case Style:SOP; No. of Pins:8; Operating Temperature Min:-40C; Operating Temperature Max:125C; SVHC:No SVHC ;RoHS Compliant: Yes |
| LM22673MR-ADJ/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM22673MRE-5.0 | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Inv/Step Down 4.5V to 42V 8-Pin PSOP EP T/R 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:SIMPLESWITCH 3.0A 4.5~42VIN 8PSOP 制造商:Texas Instruments 功能描述:SIMPLESWITCH, 3.0A 4.5~42VIN, 8PSOP 制造商:Texas Instruments 功能描述:SIMPLESWITCH, 3.0A 4.5~42VIN, 8PSOP, Primary Input Voltage:12V, No. of Outputs:1 制造商:Texas Instruments 功能描述:SIMPLESWITCH, 3.0A 4.5~42VIN, 8PSOP, Primary Input Voltage:12V, No. of Outputs:1, Output Voltage:5V, Output Current:3A, Voltage Regulator Case Style:SOP, No. of Pins:8, Operating Temperature Min:-40C, Operating Temperature , RoHS Compliant: Yes |
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