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參數資料
| 型號： | LP2951ACN |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 固定／可調正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | Micropower Voltage Regulators |
| 中文描述： | FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.45 V DROPOUT, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數： | 1/23頁 |
| 文件大小： | 240K |
| 代理商： | LP2951ACN |
Semiconductor Components Industries, LLC, 2008
May, 2008 Rev. 21
1
Publication Order Number:
LP2950/D
LP2950, LP2951, NCV2951
100 mA, Low Power Low
Dropout Voltage Regulator
The LP2950 and LP2951 are micropower voltage regulators that are
specifically designed to maintain proper regulation with an extremely
low inputtooutput voltage differential. These devices feature a very
low quiescent bias current of 75
mA and are capable of supplying
output currents in excess of 100 mA. Internal current and thermal
limiting protection is provided.
The LP2951 has three additional features. The first is the Error
Output that can be used to signal external circuitry of an out of
regulation condition, or as a microprocessor poweron reset. The
second feature allows the output voltage to be preset to 5.0 V, 3.3 V or
3.0 V output (depending on the version) or programmed from 1.25 V
to 29 V. It consists of a pinned out resistor divider along with direct
access to the Error Amplifier feedback input. The third feature is a
Shutdown input that allows a logic level signal to turnoff or turnon
the regulator output.
Due to the low inputtooutput voltage differential and bias current
specifications, these devices are ideally suited for battery powered
computer, consumer, and industrial equipment where an extension of
useful battery life is desirable. The LP2950 is available in the three
pin case 29 and DPAK packages, and the LP2951 is available in the
eight pin dualinline, SOIC8 and Micro8 surface mount packages.
The ‘A’ suffix devices feature an initial output voltage tolerance
±0.5%.
Features
Low Quiescent Bias Current of 75 mA
Low InputtoOutput Voltage Differential of 50 mV at 100 mA and
380 mV at 100 mA
5.0 V, 3.3 V or 3.0 V ±0.5% Allows Use as a Regulator or Reference
Extremely Tight Line and Load Regulation
Requires Only a 1.0 mF Output Capacitor for Stability
Internal Current and Thermal Limiting
PbFree Packages are Available
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
LP2951 Additional Features
Error Output Signals an Out of Regulation Condition
Output Programmable from 1.25 V to 29 V
Logic Level Shutdown Input
(See Following Page for Device Information.)
TO92
Z SUFFIX
CASE 29
See detailed ordering and shipping information in the package
dimensions section on pages 14 and 16 of this data sheet.
See general marking information in the device marking
section on page 18 of this data sheet.
ORDERING & MARKING INFORMATION
PIN CONNECTIONS
Pin: 1. Output
2. Ground
3. Input
DPAK
DT SUFFIX
CASE 369C
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
12
3
(Top View)
Pin: 1. Input
2. Ground
3. Output
8
1
8
1
8
1
PIN CONNECTIONS
18
7
6
5
2
3
4
(Top View)
Output
Sense
Shutdown
Input
Feedback
Error Output
VO Tap
GND
SOIC8
D SUFFIX
CASE 751
PDIP8
N SUFFIX
CASE 626
Micro8E
DM SUFFIX
CASE 846A
http://onsemi.com
1 2
3
4
1 2
3
1
2
BENT LEAD
TAPE & REEL
AMMO PACK
STRAIGHT LEAD
BULK PACK
3
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| LP2951CM-3.3 | 150mA ADJUSTABLE VOLTAGE REGULATOR |
| LP2951CM-5 | 150mA ADJUSTABLE VOLTAGE REGULATOR |
| LP2951 | 100 mA, Low Power Low Dropout Voltage Regulator(100mA,低功耗，低壓差穩(wěn)壓器) |
| LP2S3TBNN | PUSHBUTTON SWITCH, SPST, MOMENTARY, 0.005A, 5VDC, THROUGH HOLE-STRAIGHT |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LP2951ACN NOPB | 制造商:National Semiconductor 功能描述:LDO Regulator Pos 1.24V to 29V 0.1A 8-Pin PDIP Rail |
| LP2951ACN | 制造商:Texas Instruments 功能描述:V REG LDO ADJ +1.2429V 2951 DIP8 |
| LP2951ACN/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 負載調節(jié):0.3 % 輸出端數量: 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 |
| LP2951ACN3.0 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:100 mA, Low Power Low Dropout Voltage Regulator |
| LP2951ACN-3.0 | 功能描述:低壓差穩(wěn)壓器 - LDO 5V 100mA Low Power 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 負載調節(jié):0.3 % 輸出端數量: 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 |
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