參數(shù)資料
型號(hào)： LP2950ACZ-3.0G
廠商： ON SEMICONDUCTOR
元件分類(lèi)： 基準(zhǔn)電壓源/電流源
英文描述： 100 mA, Low Power Low Dropout Voltage Regulator
中文描述： 3 V FIXED POSITIVE LDO REGULATOR, 0.45 V DROPOUT, PBCY3
封裝： LEAD FREE, PLASTIC, TO-92, 3 PIN
文件頁(yè)數(shù)： 1/24頁(yè)
文件大小： 204K
代理商： LP2950ACZ-3.0G
Semiconductor Components Industries, LLC, 2006
December, 2006 Rev. 19
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 A 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
PbFree Packages are Available
Low Quiescent Bias Current of 75 A
Low InputtoOutput Voltage Differential of 50 mV at 100 A 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 F Output Capacitor for Stability
Internal Current and Thermal Limiting
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
23
1
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.
1
2
3
(Top View)
Pin: 1. Input
2. Ground
3. Output
8
1
8
1
8
1
PIN CONNECTIONS
1
8
7
6
5
2
3
4
(Top View)
Output
Sense
Shutdown
Input
Feedback
Error Output
V
O
Tap
GND
SOIC8
D SUFFIX
CASE 751
PDIP8
N SUFFIX
CASE 626
Micro8
DM SUFFIX
CASE 846A
http://onsemi.com
1 2
3
4
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LP2950ACZ5.0 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Positive Fixed Voltage Regulator
LP2950ACZ-5.0 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
LP2950ACZ-5.0 制造商:Texas Instruments 功能描述:IC V REG LDO +5.0V 2950 TO-92-3
LP2950ACZ-5.0/LFT1 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
LP2950ACZ-5.0/LFT2 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
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