- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358840 > LM322 (National Semiconductor Corporation) Precision Timers PDF資料下載
參數(shù)資料
| 型號(hào)： | LM322 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Precision Timers |
| 中文描述： | 精密定時(shí)器 |
| 文件頁(yè)數(shù)： | 5/14頁(yè) |
| 文件大?。?/td> | 281K |
| 代理商： | LM322 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)當(dāng)前第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)
Functional Diagram
TL/H/7768–9
Timing Diagram
TL/H/7768–10
Pin Function Description
One of the main features of the LM122 is its great versatility.
Since this device is unique, a description of the functions
and limitations of each pin is in order. This will make it much
easier to follow the discussion of the various applications
presented in this note.
V
a
is the positive supply terminal of the LM122. When us-
ing a single supply, this terminal may be driven by any volt-
age between 4.5V and 40V. The effect of supply variations
on timing period is less than 0.005%/V, so supplies with
high ripple content may be used without causing pulse width
changes. Supply bypassing on
V
a
is not generally needed
but may be necessary when driving highly reactive loads.
Quiescent current drawn from the
V
a
terminal is typically
2.5 mA, independent of the supply voltage. Of course, addi-
tional current will be drawn if the reference is externally
loaded.
The
V
REF
pin is the output of a 3.15V series regulator refer-
enced to the ground pin. Up to 5.0 mA can be drawn from
this pin for driving external networks. In most applications
the timing resistor is tied to
V
REF
, but it need not be in
situations where a more linear charging current is required.
The regulated voltage is very useful in applications where
the LM122 is not used as a timer; such as switching regula-
tors, variable reference comparators, and temperature con-
5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM323A | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LM323H | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| LM323KSTEEL | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| LM123KSTEEL-MIL | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| LM323AT | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM322-155.52M | 制造商:CONNOR-WINFIELD 制造商全稱:Connor-Winfield Corporation 功能描述:5.0x7.0mm Surface Mount LVDS Clock Oscillator Series |
| LM3224 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:615kHz/1.25MHz Step-up PWM DC/DC Converter |
| LM3224_05 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:615kHz/1.25MHz Step-up PWM DC/DC Converter |
| LM3224MM-ADJ | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Up 2.7V to 7V 8-Pin VSSOP T/R 制造商:Texas Instruments 功能描述:BOOST CONVERTER, POWERWISE, 3224, MSOP8 制造商:National Semiconductor Corporation 功能描述:DC-DC Boost Converter,LM3224MM-ADJ 制造商:Texas Instruments 功能描述:DC-DC Boost Converter,LM3224MM-ADJ |
| LM3224MM-ADJ/NOPB | 功能描述:DC/DC 開關(guān)控制器 STEP-UP PWM DC/DC CONVERTER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。