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參數(shù)資料
| 型號： | LP2950-33LP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | ADJUSTABLE MICROPOWER VOLTAGE REGULATORS WITH SHUTDOWN |
| 中文描述： | 可調(diào)微功耗電壓調(diào)節(jié)器具有關(guān)斷 |
| 文件頁數(shù)： | 1/26頁 |
| 文件大?。?/td> | 2721K |
| 代理商： | LP2950-33LP |
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www.ti.com
FEATURES
OUTPUT
GND
INPUT
1
2
3
4
8
7
6
5
INPUT
FEEDBACK
V
TAP
ERROR
OUTPUT
SENSE
SHUTDOWN
GND
LP2951...D (SOIC) PACKAGE
(TOPVIEW)
LP2950...LP (TO-226/TO-92 PACKAGE
(BOTTOMVIEW)
DESCRIPTION/ORDERING INFORMATION
The LP2950 and LP2951 devices are bipolar, low-dropout voltage regulators that can accommodate a wide input
supply-voltage range of up to 30 V. The easy-to-use, 3-pin LP2950 is available in fixed-output voltages of 5 V,
3.3 V, and 3 V. However, the 8-pin LP2951 is able to output either a fixed or adjustable output from the same
device. By tying the OUTPUT and SENSE pins together, and the FEEDBACK and V
TAP
pins together, the
LP2951 outputs a fixed 5 V, 3.3 V, or 3 V (depending on the version). Alternatively, by leaving the SENSE and
V
TAP
pins open and connecting FEEDBACK to an external resistor divider, the output can be set to any value
between 1.235 V to 30 V.
LP2950
,
LP2951
ADJUSTABLE MICROPOWER VOLTAGE REGULATORS
WITH SHUTDOWN
SLVS582D–APRIL 2006–REVISED MARCH 2007
Wide Input Range
…
up to 30 V
Rated Output Current of 100 mA
Low Dropout
…
380 mV (Typ) at 100 mA
Low Quiescent Current
…
75
μ
A (Typ)
Tight Line Regulation
…
0.03% (Typ)
Tight Load Regulation
…
0.04% (Typ)
High V
O
Accuracy
–
1.4% at 25
°
C
–
2% Over Temperature
Can Be Used as a Regulator or Reference
Stable With Low ESR (>12 m
) Capacitors
Current- and Thermal-Limiting Features
LP2950 Only (3-Pin Package)
–
Fixed-Output Voltages of 5 V, 3.3 V,
and 3 V
LP2951 Only (8-Pin Package)
–
Fixed- or Adjustable-Output Voltages:
5 V/ADJ, 3.3 V/ADJ, and 3 V/ADJ
–
Low-Voltage Error Signal on Falling Output
–
Shutdown Capability
–
Remote Sense Capability for Optimal
Output Regulation and Accuracy
The 8-pin LP2951 also offers additional functionality that makes it particularly suitable for battery-powered
applications. For example, a logic-compatible shutdown feature allows the regulator to be put in standby mode
for power savings. In addition, there is a built-in supervisor reset function in which the ERROR output goes low
when V
OUT
drops by 6% of its nominal value for whatever reasons – due to a drop in V
IN
, current limiting, or
thermal shutdown.
The LP2950 and LP2951 are designed to minimize all error contributions to the output voltage. With a tight
output tolerance (0.5% at 25
°
C), a very low output voltage temperature coefficient (20 ppm typical), extremely
good line and load regulation (0.3% and 0.4% typical), and remote sensing capability, the parts can be used as
either low-power voltage references or 100-mA regulators.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 2006–2007, Texas Instruments Incorporated
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP2950ACZ-3.0G | 100 mA, Low Power Low Dropout Voltage Regulator |
| LP2950CN-33 | 100mA LOW DROPOUT VOLTAGE REGULATOR |
| LP2950AT-3.0 | 100 mA Low Dropout Voltage Regulators |
| LP2950CT-3.0 | 100 mA Low Dropout Voltage Regulators |
| LP2950AS | 100 mA Low Dropout Voltage Regulators |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP2950-33LPE3 | 功能描述:低壓差穩(wěn)壓器 - LDO Adj Micropwr Vltg Reg 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP2950-33LPR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ADJUSTABLE MICROPOWER VOLTAGE REGULATORS WITH SHUTDOWN |
| LP2950-33LPRE3 | 功能描述:低壓差穩(wěn)壓器 - LDO Adj Micropwr Vltg Reg 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP2950-33-S08-B | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:100 mA LOW-DROPOUT VOLTAGE REGULATOR |
| LP2950-33-S08-K | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:100 mA LOW-DROPOUT VOLTAGE REGULATOR |
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