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参数资料
| 型号： | LM34919BTL |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, PBGA10 |
| 封装： | MICRO, SMD-10 |
| 文件页数： | 16/20页 |
| 文件大小： | 488K |
| 代理商： | LM34919BTL |
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Threshold hysteresis
Voltage at RON/SD
40
mV
Off Timer
t
OFF
Minimum Off-time
V
IN = 6V, ICC = 3mA
60
88
120
ns
V
IN = 8V, ICC = 3mA
58
82
118
Regulation and Over-Voltage Comparators (FB Pin)
V
REF
FB regulation threshold
SS pin = steady state
2.440
2.5
2.550
V
FB over-voltage threshold
2.9
V
FB bias current
FB = 3V
1
nA
Thermal Shutdown
T
SD
Thermal shutdown temperature
175
°C
Thermal shutdown hysteresis
20
°C
Thermal Resistance
θ
JA
Junction to Ambient
0 LFPM Air Flow
61
°C/W
Note 1:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the
device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2:
The human body model is a 100pF capacitor discharged through a 1.5k
resistor into each pin.
Note 3:
V
CC provides self bias for the internal gate drive and control circuits. Device thermal limitations limit external loading
Note 4:
Typical specifications represent the most likely parametric norm at 25°C operation.
5
www.national.com
LM34919B
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM34919BTL/NOPB | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| LM34919BTLX | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator |
| LM34919BTLX/NOPB | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| LM34919C-Q1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator |
| LM34919CQSD/NOPB | 制造商:Texas Instruments 功能描述:IC REG BUCK ADJ 0.6A 12WSON |
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