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參數(shù)資料
| 型號： | LM9073T |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Dual High Current Low-Dropout System Regulator |
| 中文描述： | DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PZFM11 |
| 封裝： | POWER, TO-220, 11 PIN |
| 文件頁數(shù)： | 9/18頁 |
| 文件大小： | 718K |
| 代理商： | LM9073T |
Control Logic Truth Table
ON/OFF Input Keep-Alive Input Main Output Voltage External Supply Output
Voltage
0V
Reset Output
Operating Condition
L
L
0V
0V
OFF, Input curent
<
100μA
Outputs turn ON, Power ON
delayed reset
Normal ON condition
Main output pulled out of
regulation,
Reset flag generated.
Threshold depends on Reset
Adjust seting (pin 11)
Keep-Alive, Continued normal
operation
Outputs turned ON by
Keep-Alive Input
Rising Edge
L
5V
5V
Rising after delay
H
X
5V
5V
5V
H
X
<
4V or
<
4.5V or
<
5.35V
X
0V
Falling Edge
H
5V
5V
5V
L
Rising Edge
5V
5V
Rising after delay
Application Information
Pin Description and Functionality
The LM9073 is a precision dual voltage regulator optimized
for use in powertrain module applications but will also find
use in a wide variety of automotive and industrial applica-
tions were precision supply regulation is required in harsh
operating environments. The following will describe the func-
tionality of each of the package pins.
Input Voltage (pin 4)
The LM9073 has been designed to connect directly to the ig-
nition or battery supply in automotive applications. For this
type of supply the regulator been designed to withstand up to
+60V and 45V supply transients such as load dump. An ov-
ervoltage shut down protection circuit turns OFF both of the
regulator outputs should supply transients exceed typically
+33V to fully protect all load circuitry. This higher threshold
allows normal operation with 24V
applied to the input as in
the event when two batteries are used to start a vehicle. Pro-
tection of the system is also provided for inadvertent reverse
polarity battery connections.
The current drain on the supply line is directly proportional to
the load currents on the two voltage regulators. With no load
current on either output the regulator requires 15mA maxi-
mum quiescent current for biasing internal circuitry. During
dropout conditions (V
<
5.5V) the additional input current
can rise to 50% of the total load current. With less than 3V
applied to the input, internal biasing circuitry shuts OFF.
When switched OFF the regulator can remain connected to
the battery supply with a current drain of less than 100μA.
Main Output (pin 10)
The Main Output regulator provides a well controlled (2% tol-
erance maximum) 5V supply line with a total load current
Figure 1. Circuit Block Diagram
DS101296-16
L
www.national.com
9
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM9073T/NOPB | 功能描述:IC REG LDO 5V .7A/.1A TO-220-11 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| LM9074 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:System Voltage Regulator with Keep-Alive ON/OFF |
| LM9074EP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Enhanced Plastic System Voltage Regulator with Keep-Alive ON/OFF Control |
| LM9074M | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| LM9074M/NOPB | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
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