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参数资料
| 型号： | LM22677QTJ-ADJ |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 8.75 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PSSO7 |
| 封装： | PLASTIC, TO-263, 7 PIN |
| 文件页数： | 10/16页 |
| 文件大小： | 398K |
| 代理商： | LM22677QTJ-ADJ |
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN to GND
43V
EN Pin Voltage
-0.5V to 6V
RT/SYNC Pin Voltage
-0.5V to 7V
SW to GND (Note 2)
-5V to V
IN
BOOT Pin Voltage
V
SW + 7V
FB Pin Voltage
-0.5V to 7V
Power Dissipation
Internally Limited
Junction Temperature
150°C
Soldering Information
Infrared (5 sec.)
260°C
ESD Rating (Note 3)
Human Body Model
±2 kV
Storage Temperature Range
-65°C to +150°C
Operating Ratings (Note 1)
Supply Voltage (V
IN)
4.5V to 42V
Junction Temperature Range
-40°C to +125°C
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 guaranteed through test, design, or statistical
correlation. Typical values represent the most likely parametric norm at T
A = TJ = 25°C, and are provided for reference purposes
only. Unless otherwise specified: V
IN = 12V.
Symbol
Parameter
Conditions
Min
(Note 5)
Typ
Max
Units
LM22677-5.0
V
FB
Feedback Voltage
V
IN = 8V to 42V
4.925/4.9
5.0
5.075/5.1
V
LM22677-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
Quiescent Current
V
FB = 5V
3.4
6
mA
I
STDBY
Standby Quiescent Current
EN Pin = 0V
25
40
A
I
CL
Current Limit
6.0/5.75
7.1
8.4/8.75
A
I
L
Output Leakage Current
V
IN = 42V, EN Pin = 0V, VSW = 0V
0.2
2
A
V
SW = -1V
0.1
3
A
R
DS(ON)
Switch On-Resistance
0.1
0.14/0.2
f
O
Oscillator Frequency
400
500
600
kHz
T
OFFMIN
Minimum Off-time
100
200
300
ns
T
ONMIN
Minimum On-time
100
ns
I
BIAS
Feedback Bias Current
V
FB = 1.3V (ADJ Version Only)
230
nA
V
EN
Enable Threshold Voltage
Falling
1.3
1.6
1.9
V
ENHYST
Enable Voltage Threshold
Hysteresis
0.6
V
I
EN
Enable Input Current
EN Input = 0V
6
A
F
SYNC
Synchronization Frequency
V
SYNC = 3.5V, 50% duty-cycle
1
MHz
V
SYNC
Synchronization Threshold
Voltage
1.75
V
T
SD
Thermal Shutdown
Threshold
150
°C
θ
JA
Thermal Resistance
TJ Junction to ambient temperature
resistance (Note 6)
22
°C/W
3
www.national.com
LM22677/LM22677Q
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相关代理商/技术参数 |
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|---|---|
| LM22677QTJ-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 |
| LM22677QTJE-5.0 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:5A SIMPLE SWITCHER?, Step-Down Voltage Regulator with Synchronization or Adjustable Switching Frequency |
| LM22677QTJE-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 |
| LM22677QTJE-ADJ | 制造商:NSC 制造商全称:National Semiconductor 功能描述:5A SIMPLE SWITCHER?, Step-Down Voltage Regulator with Synchronization or Adjustable Switching Frequency |
| LM22677QTJE-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 |
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