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參數(shù)資料
| 型號： | LP2985IBLX-1.8 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Micropower 150 mA Low-Noise Low-Dropout Regulator in SOT-23 and micro SMD packages for Applications |
| 中文描述： | 1.8 V FIXED POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PBGA5 |
| 封裝： | MICRO, SMD-5 |
| 文件頁數(shù)： | 12/23頁 |
| 文件大小： | 528K |
| 代理商： | LP2985IBLX-1.8 |
SLVS522C JULY 2004 REVISED OCTOBER 2004
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
reverse input-output voltage
There is an inherent diode present across the PNP pass element of the LP2985.
VOUT
VIN
With the anode connected to the output, this diode is reverse biased during normal operation, since the input
voltage is higher than the output. However, if the output is pulled higher than the input for any reason, this diode
is forward biased and can cause a parasitic silicon-controlled rectifier (SCR) to latch, resulting in high current
flowing from the output to the input. Thus, to prevent possible damage to the regulator in any application where
the output may be pulled above the input, an external Schottky diode should be connected between the output
and input. With the anode on output, this Schottky limits the reverse voltage across the output and input pins
to
0.3 V, preventing the regulator’s internal diode from forward biasing.
VOUT
VIN
Schottky
LP2985
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP2985AIBP-2.8 | Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors |
| LP2985IBP-2.8 | Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors |
| LP2985AIM5-2.0 | CONNECTOR ACCESSORY |
| LP2985IM5-2.0 | CONNECTOR ACCESSORY |
| LP2985AIM5-3.0 | Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP2985IBLX-285 | 制造商:Rochester Electronics LLC 功能描述:150MA LDO REG LOW-NOISE LOW ES - Bulk 制造商:Texas Instruments 功能描述: |
| LP2985IBLX-3.0 | 制造商:Rochester Electronics LLC 功能描述:150MA LDO REG LOW-NOISE LOW ES - Bulk 制造商:Texas Instruments 功能描述: |
| LP2985IBP-1.5 | 制造商:Texas Instruments 功能描述: |
| LP2985IBP-1.8 | 功能描述:IC REG LDO 1.8V .15A 5USMD RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品變化通告:Heatsink Pkg Change 09/Oct/2007 標(biāo)準(zhǔn)包裝:50 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:24V 輸入電壓:最高 40 V 電壓 - 壓降（標(biāo)準(zhǔn)）:2V @ 1A 穩(wěn)壓器數(shù)量:1 電流 - 輸出:1A 電流 - 限制（最?。?- 工作溫度:0°C ~ 125°C 安裝類型:通孔 封裝/外殼:TO-220-3 供應(yīng)商設(shè)備封裝:TO-220-3 包裝:管件 |
| LP2985IBP-2.4/NOPB | 功能描述:IC REG LDO 2.4V .15A 5MICROSMD RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品變化通告:Heatsink Pkg Change 09/Oct/2007 標(biāo)準(zhǔn)包裝:50 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:24V 輸入電壓:最高 40 V 電壓 - 壓降（標(biāo)準(zhǔn)）:2V @ 1A 穩(wěn)壓器數(shù)量:1 電流 - 輸出:1A 電流 - 限制（最?。?- 工作溫度:0°C ~ 125°C 安裝類型:通孔 封裝/外殼:TO-220-3 供應(yīng)商設(shè)備封裝:TO-220-3 包裝:管件 |
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