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參數(shù)資料
| 型號： | LP3997 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Micropower 250mA CMOS LDO Regulator with Error Flag / Power-On-Reset |
| 中文描述： | 微功耗250mA的CMOS LDO穩(wěn)壓器，錯誤旗/上電復位 |
| 文件頁數(shù)： | 2/11頁 |
| 文件大小： | 279K |
| 代理商： | LP3997 |
Functional Block Diagram
20092908
Pin Descriptions
Pin #
1
Name
CNOISE
Description
Noise bypass pin. For low noise applications a 0.1μF or larger ceramic
capacitor should be connected from this pin to ground
A capacitor connected from this pin to ground will allow a delayed
power-on-reset signal at the ERROR (pin 7) output.
Ground pin. Local ground for C
NOISE
and C
OUT
.
Input supply pin. Bypass this with a 1μF capacitor.
Output voltage, Connect C
OUT
between this pin and ground.
Connect this pin to VOUT (pin 5).
This open drain output is an error flag output which goes low when V
OUT
drops 5% below it nominal voltage. This pin also provides a power-on-reset
signal if a capacitor is connected to the DELAY pin.
Shutdown. Disables the regulator when less than 0.4V is applied. Enables the
regulator when greater than 0.9V. The Shutdown pin is pulled down internally
by a 6M
resistor.
2
DELAY
3
4
5
6
7
GND
V
IN
V
OUT
SENSE
ERROR
8
SD
Connection Diagram
8 Lead MSOP
NS Package Number MUA08A
20092904
L
www.national.com
2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3997MM-3.3 | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3997MM-3.3/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3997MM-3.3/NOPB | 制造商:Texas Instruments 功能描述:Linear Voltage Regulator IC |
| LP3997MMX-3.3/NOPB | 功能描述:IC REG LDO 3.3V .25A 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:3.1V 輸入電壓:最高 5.5V 電壓 - 壓降（標準）:- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:300mA 電流 - 限制（最?。?420mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細型，TSOT-23-5 供應商設(shè)備封裝:TSOT-23-5 包裝:帶卷 (TR) |
| LP3999ITL-1.5 | 制造商:Texas Instruments 功能描述:LDO Regulator Pos 1.5V 0.15A 5-Pin uSMD T/R |
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