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參數資料
| 型號： | LP2978AIM5-3.8 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout Regulator |
| 中文描述： | 3.8 V FIXED POSITIVE LDO REGULATOR, 0.225 V DROPOUT, PDSO5 |
| 封裝： | SOT-23, SOP-5 |
| 文件頁數： | 1/7頁 |
| 文件大?。?/td> | 102K |
| 代理商： | LP2978AIM5-3.8 |
LP2978
Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout
Regulator
Designed for Use with Very Low ESR Output Capacitors
General Description
The LP2978 is a 50 mA, fixed-output voltage regulator de-
signed to provide ultra low-dropout and low noise in battery
powered applications.
Using an optimized VIP
(Vertically Integrated PNP) pro-
cess, the LP2978 delivers unequalled performance in all
specifications critical to battery-powered designs:
Dropout Voltage:
Typically 120 mV
@
50 mAload, and 7 mV
@
1 mA load.
Ground Pin Current:
Typically 350 μA
@
50 mA load, and
75 μA
@
1 mA load.
Enhanced Stability:
The LP2978 is stable with output ca-
pacitor ESR as low as 5 m
, which allows the use of ceramic
capacitors on the output.
Sleep Mode:
Less than 1 μA quiescent current when
ON/OFF pin is pulled low.
Smallest Possible Size:
SOT-23 package uses absolute
minimum board space.
Precision Output:
1% tolerance output voltages available
(A grade).
Low Noise:
By adding a 10 nF bypass capacitor, output
noise can be reduced to 30 μV (typical).
Features
n
Ultra low dropout voltage
n
Smallest possible size (SOT-23 Package)
n
Requires minimum external components
n
Stable with low-ESR output capacitor
n
<
1 μA quiescent current when shut down
n
Low ground pin current at all loads
n
Output voltage accuracy 1% (A Grade)
n
High peak current capability
n
Wide supply voltage range (16V max)
n
Low Z
OUT
: 0.3
typical (10 Hz to 1 MHz)
n
Overtemperature/overcurrent protection
n
40C to +125C junction temperature range
n
Custom voltages available
Applications
n
Cellular Phone
n
Palmtop/Laptop Computer
n
Personal Digital Assistant (PDA)
n
Camcorder, Personal Stereo, Camera
Block Diagram
VIP
is a trademark of National Semiconductor Corporation.
DS100935-1
July 2000
L
2000 National Semiconductor Corporation
DS100935
www.national.com
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|---|---|
| LP2978AIM5X-3.8 | SUBMINIATURE PC BOARD RELAY |
| LP2978IM5-3.8 | SUBMINIATURE PC BOARD RELAY |
| LP2978IM5X-3.8 | SUBMINIATURE PC BOARD RELAY |
| LP2980AIM5X-5.0 | Micropower 50 mA Ultra Low-Dropout Regulator |
| LP2980AIBP-3.3 | Micropower 50 mA Ultra Low-Dropout Regulator |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LP2978AY-3.8 WAF | 制造商:Texas Instruments 功能描述: |
| LP2978IM5-3.8 | 制造商:Rochester Electronics LLC 功能描述:50MA LDO REGULATOR, LOW-NOISE - Bulk 制造商:Texas Instruments 功能描述: |
| LP2978IM5X-3.8 | 制造商:Rochester Electronics LLC 功能描述:50MA LDO REGULATOR, LOW-NOISE - Bulk 制造商:Texas Instruments 功能描述: |
| LP2980-1.57BUP6 WAF | 制造商:Texas Instruments 功能描述: |
| LP2980-3.3BUP6 WAF | 制造商:Texas Instruments 功能描述: |
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