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参数资料
| 型号： | LM2677SDX-12/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 8.75 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
| 封装： | LLP-14 |
| 文件页数： | 21/26页 |
| 文件大小： | 677K |
| 代理商： | LM2677SDX-12/NOPB |
All Output Voltage Versions
Electrical Characteristics
Limits appearing in bold type face apply over the entire junction temperature range of operation, 40°C to 125°C.
Specifications appearing in normal type apply for T
A = TJ = 25°C. Unless otherwise specified VIN=12V for the 3.3V, 5V and Ad-
justable versions and V
IN=24V for the 12V version, Sync pin open circuited..
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
μA
I
CL
Current Limit
7
6.1/5.75
8.3/8.75
A
I
L
Output Leakage
Current
V
IN = 40V, ON/OFF Pin = 0V
V
SWITCH = 0V
1
200
15
μA
V
SWITCH = 1V
6
mA
R
DS(ON)
Switch On-
Resistance
I
SWITCH = 5A
0.12
0.14/0.225
Ω
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
μA
F
SYNC
Synchronization
Frequency
V
SYNC(Pin 5)=3.5V, 50% Duty Cycle
400
KHz
V
SYNC
SYNC Threshold
Voltage
1.4
V
θ
JA
Thermal
Resistance
T Package, Junction to Ambient
65
(Note 5)
θ
JA
T Package, Junction to Ambient
45
(Note 6)
θ
JC
T Package, Junction to Case
2
θ
JA
S Package, Junction to Ambient
56
°C/W
(Note 7)
θ
JA
S Package, Junction to Ambient
35
(Note 8)
θ
JA
S Package, Junction to Ambient
26
(Note 9)
θ
JC
S Package, Junction to Case
2
++
θ
JA
SD Package, Junction to Ambient
55
°C/W
(Note 10)
θ
JA
SD Package, Junction to Ambient
29
(Note 11)
Note 1:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings indicate conditions under which of the device
is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test condition, see the electrical
Characteristics tables.
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LM2677
相关PDF资料 |
PDF描述 |
|---|---|
| LM2679LD-ADJ | 8.1 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
| LM2679LDX-3.3 | 8.1 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
| LM2679LDX-12 | 8.1 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
| LM2679LDX-5.0 | 8.1 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
| LM2679SDX-5.0/NOPB | 8.1 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, DSO14 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2677SDX-3.3 | 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 |
| LM2677SDX-3.3/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 |
| LM2677SDX-5.0 | 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 |
| LM2677SDX-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 |
| LM2677SDX-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 |
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