- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358906 > LP2952IN-3.3 (NATIONAL SEMICONDUCTOR CORP) Adjustable Micropower Low-Dropout Voltage Regulators PDF資料下載
參數(shù)資料
| 型號： | LP2952IN-3.3 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Adjustable Micropower Low-Dropout Voltage Regulators |
| 中文描述： | FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.8 V DROPOUT, PDIP14 |
| 封裝： | PLASTIC, DIP-14 |
| 文件頁數(shù)： | 12/22頁 |
| 文件大小： | 1050K |
| 代理商： | LP2952IN-3.3 |
Schematic Diagram
01112706
Application Hints
HEATSINK REQUIREMENTS (Industrial Temperature
Range Devices)
The maximum allowable power dissipation for the LP2952/
LP2953 is limited by the maximum junction temperature
(+125C) and the external factors that determine how quickly
heat flows away from the part: the
ambient temperature
and
the
junction-to-ambient thermal resistance
for the specific
application.
The industrial temperature range (40C
≤
T
≤
+125C)
parts are manufactured in plastic DIP and surface mount
packages which contain a copper lead frame that allows
heat to be effectively conducted away from the die, through
the ground pins of the IC, and into the copper of the PC
board. Details on heatsinking using PC board copper are
covered later.
To determine if a heatsink is required, the maximum power
dissipated by the regulator, P(max), must be calculated. It is
important to remember that if the regulator is powered from
a transformer connected to the AC line, the
maximum
specified AC input voltage
must be used (since this pro-
duces the maximum DC input voltage to the regulator).
Figure 1
shows the voltages and currents which are present
in the circuit. The formula for calculating the power dissi-
pated in the regulator is also shown in
Figure 1
:
L
www.national.com
12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP2952AIM | Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2952IN | Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2952AI-3.3 | Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2952AI | Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2952A | Adjustable Micropower Low-Dropout Voltage Regulators |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP2953 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2953 MDS | 制造商:Texas Instruments 功能描述:- Gel-pak, waffle pack, wafer, diced wafer on film |
| LP2953A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2953AI | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2953AI-3.3 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Adjustable Micropower Low-Dropout Voltage Regulators |
發(fā)布緊急采購，3分鐘左右您將得到回復。