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参数资料
| 型号： | LM2676LD-5.0 |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 5.4 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
| 封装： | LLP-14 |
| 文件页数： | 20/25页 |
| 文件大小： | 435K |
| 代理商： | LM2676LD-5.0 |
All Output Voltage Versions
Electrical Characteristics
Limits appearing in bold type face apply over the entire junction temperature range of operation, 40C to 125C. Specifica-
tions appearing in normal type apply for T
A =TJ = 25C. Unless otherwise specified VIN=12V for the 3.3V, 5V and Adjustable
versions and V
IN=24V for the 12V version.
Symbol
Parameter
Conditions
Typ
Min
Max
Units
DEVICE PARAMETERS
I
Q
Quiescent
Current
V
FEEDBACK = 8V
4.2
6
mA
For 3.3V, 5.0V, and ADJ Versions
V
FEEDBACK = 15V
For 12V Versions
I
STBY
Standby
Quiescent
Current
ON/OFF Pin = 0V
50
100/150
A
I
CL
Current Limit
4.5
3.8/3.6
5.25/5.4
A
I
L
Output Leakage
Current
V
IN = 40V, ON/OFF Pin = 0V
V
SWITCH =0V
V
SWITCH = 1V
16
200
15
A
mA
R
DS(ON)
Switch
On-Resistance
I
SWITCH = 3A
0.15
0.17/0.29
f
O
Oscillator
Frequency
Measured at Switch Pin
260
225
280
kHz
D
Duty Cycle
Maximum Duty Cycle
91
%
Minimum Duty Cycle
0
%
I
BIAS
Feedback Bias
Current
V
FEEDBACK = 1.3V
ADJ Version Only
85
nA
V
ON/OFF
Threshold
Voltage
1.4
0.8
2.0
V
I
ON/OFF
ON/OFF Input
Current
ON/OFF Input = 0V
20
45
A
θ
JA
Thermal
Resistance
T Package, Junction to Ambient
65
θ
JA
T Package, Junction to Ambient
45
θ
JC
T Package, Junction to Case
2
θ
JA
S Package, Junction to Ambient
56
C/W
θ
JA
S Package, Junction to Ambient
35
θ
JA
S Package, Junction to Ambient
26
θ
JC
S Package, Junction to Case
2
++
θ
JA
LD Package, Junction to Ambient
55
C/W
θ
JA
LD Package, Junction to Ambient
29
LM2676
www.national.com
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2676LD-ADJ | 制造商:Rochester Electronics LLC 功能描述:3A STEP DOWN SIMP SWITCH 260KH - Bulk 制造商:Texas Instruments 功能描述: |
| LM2676LDX-ADJ | 制造商:Rochester Electronics LLC 功能描述:3A STEP DOWN SIMP SWITCH 260KH - Bulk 制造商:Texas Instruments 功能描述: |
| LM2676S12 | 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 8V to 40V 8-Pin(7+Tab) TO-263 Rail |
| LM2676S-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 |
| LM2676S-12/NOPB | 功能描述:直流/直流开关转换器 HIGH EFF 3A 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 |
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