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参数资料
| 型号： | LM2651MTC-2.5/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2.6 A SWITCHING REGULATOR, 345 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | TSSOP-16 |
| 文件页数： | 7/11页 |
| 文件大小： | 631K |
| 代理商： | LM2651MTC-2.5/NOPB |
All Output Voltage Versions (Continued)
Specifications in standard type face are for T
J = 25C and those with boldface type apply over full operating junction tem-
perature range. V
IN =10V unless otherwise specified.
Symbol
Parameter
Conditions
Typical
Limit
Units
V
EAL
Error Amplifier Output Swing
Lower Limit
1.25
1.35/1.50
V
V(max)
V
D
Body Diode Voltage
I
DIODE = 1.5A
1
V
f
OSC
Oscillator Frequency
V
IN = 4V
300
280/255
330/345
kHz
kHz(min)
kHz(max)
D
MAX
Maximum Duty Cycle
V
IN =4V
95
92
%
%(min)
I
SS
Soft-Start Current
Voltage at the SS pin = 1.4V
11
7
14
A
A(min)
A(max)
I
SHUTDOWN
Shutdown Pin Current
Shutdown Pin Pulled Low
2.2
0.8/0.5
3.7/4.0
A
A(min)
A(max)
v
SHUTDOWN
Shutdown Pin Threshold
Voltage
Falling Edge
0.6
0.3
0.9
V
V(min)
V(max)
T
SD
Thermal Shutdown
Temperature
165
C
T
SD_HYST
Thermal Shutdown Hysteresis
Temperature
25
C
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 maximum allowable power dissipation is calculated by using PDmax =(TJmax TA)/θJA , where TJmax is the maximum junction temperature, TA is the
ambient temperature, and
θJA is the junction-to-ambient thermal resistance of the specified package. The 893 mW rating results from using 150C, 25C, and
140C/W for TJmax,TA, and θJA respectively. A θJA of 140C/W represents the worst-case condition of no heat sinking of the 16-pin TSSOP package. Heat sinking
allows the safe dissipation of more power. The Absolute Maximum power dissipation must be derated by 7.14mW per C above 25C ambient. The LM2651 actively
limits its junction temperature to about 165C.
Note 3: The human body model is a 100pF capacitor discharged through a 1.5k
resistor into each pin.
Note 4: Typical numbers are at 25C and represent the most likely norm.
Note 5: All limits are guaranteed at room temperature (standard typeface) and at temperature extremes (boldface type ). 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).
LM2651
www.national.com
5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2651MTC-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 |
| LM2651MTC-3.3/NOPB | 功能描述:直流/直流开关转换器 1.5A HIGH EFFICIENCY SWITCHING 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 |
| LM2651MTC-3.3/NOPB | 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu |
| LM2651MTC-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 |
| LM2651MTC-ADJ | 制造商:Texas Instruments 功能描述:SWITCHING REG 1.5A ADJ SMD 2651 |
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