- 您现在的位置：买卖IC网 > PDF目录44550 > LM2672M-5.0X (NATIONAL SEMICONDUCTOR CORP) 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO8 PDF资料下载
参数资料
| 型号： | LM2672M-5.0X |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 0.150 INCH, PLASTIC, SO-8 |
| 文件页数： | 21/26页 |
| 文件大小： | 626K |
| 代理商： | LM2672M-5.0X |
All Output Voltage Versions
Specifications with standard type face are for T
J = 25°C, and those in bold type face apply over full Operating Temperature
Range
. Unless otherwise specified, V
IN = 12V for the 3.3V, 5V, and Adjustable versions and VIN = 24V for the 12V version, and
I
LOAD = 100 mA.
Symbol
Parameters
Conditions
Typ
Min
Max
Units
DEVICE PARAMETERS
I
Q
Quiescent Current
V
FEEDBACK = 8V
2.5
3.6
mA
For 3.3V, 5.0V, and ADJ Versions
V
FEEDBACK = 15V
2.5
mA
For 12V Versions
I
STBY
Standby Quiescent Current
ON/OFF Pin = 0V
50
100/150
μA
I
CL
Current Limit
1.55
1.25/1.2
2.1/2.2
A
I
L
Output Leakage Current
V
IN = 40V, ON/OFF Pin = 0V
1
25
μA
V
SWITCH = 0V
V
SWITCH = 1V, ON/OFF Pin = 0V
6
15
mA
R
DS(ON)
Switch On-Resistance
I
SWITCH = 1A
0.25
0.30/0.50
Ω
f
O
Oscillator Frequency
Measured at Switch Pin
260
225
275
kHz
D
Maximum Duty Cycle
95
%
Minimum Duty Cycle
0
%
I
BIAS
Feedback Bias
V
FEEDBACK = 1.3V
85
nA
Current
ADJ Version Only
V
S/D
ON/OFF Pin
1.4
0.8
2.0
V
Voltage Thesholds
I
S/D
ON/OFF Pin Current
ON/OFF Pin = 0V
20
7
37
μA
F
SYNC
Synchronization Frequency
V
SYNC = 3.5V, 50% duty cycle
400
kHz
V
SYNC
Synchronization Threshold
Voltage
1.4
V
SS
Soft-Start Voltage
0.63
0.53
0.73
V
I
SS
Soft-Start Current
4.5
1.5
6.9
μA
θ
JA
Thermal Resistance
N Package, Junction to Ambient (Note 6)
95
°C/W
M Package, Junction to Ambient (Note 6)
105
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but device parameter specifications may not be guaranteed under these conditions. For guaranteed specifications and test conditions,
see the Electrical Characteristics.
Note 2:
The human body model is a 100 pF capacitor discharged through a 1.5 k
Ω resistor into each pin.
Note 3:
External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect switching regulator
performance. When the LM2672 is used as shown in Figure 2 and Figure 3 test circuits, system performance will be as specified by the system parameters section
of the Electrical Characteristics.
Note 4:
Typical numbers are at 25°C and represent the most likely norm.
Note 5:
All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100%
production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used
to calculate Average Outgoing Quality Level (AOQL).
Note 6:
Junction to ambient thermal resistance with approximately 1 square inch of printed circuit board copper surrounding the leads. Additional copper area
will lower thermal resistance further. See Application Information section in the application note accompanying this datasheet and the thermal model in LM267X
Made Simple
version 6.0 software. The value
θ
JA for the LLP (LD) package is specifically dependent on PCB trace area, trace material, and the number of layers
and thermal vias. For improved thermal resistance and power dissipation for the LLP package, refer to Application Note AN-1187.
www.national.com
4
LM2672
相关PDF资料 |
PDF描述 |
|---|---|
| LM2672LD-5.0/NOPB | 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO16 |
| LM2672M-ADJX | 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO8 |
| LM2674-3.3MDC | 1.25 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, UUC |
| LM2674-3.3MWC | 1.25 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, UUC |
| LM2674-ADJMWC | 1.25 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, UUC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2672M-ADJ | 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 |
| LM2672M-ADJ | 制造商:Texas Instruments 功能描述:SWITCHING REG 1A ADJ 2672 SOIC8 |
| LM2672M-ADJ/NOPB | 功能描述:直流/直流开关转换器 HIGH EFF 1A STEP- DOWN VLTG REG 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 |
| LM2672M-ADJ/NOPB | 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu |
| LM2672MX-12 | 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 |
发布紧急采购，3分钟左右您将得到回复。