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| 型号： | LP2951ACDM |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 固定／可调正电压单路输出LDO稳压器 |
| 英文描述： | Micropower Voltage Regulators |
| 中文描述： | FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.45 V DROPOUT, PDSO8 |
| 封装： | PLASTIC, MICROPAK-8 |
| 文件页数： | 1/18页 |
| 文件大小： | 164K |
| 代理商： | LP2951ACDM |
Semiconductor Components Industries, LLC, 2003
March, 2003 - Rev. 10
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 input-to-output 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 power-on 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 turn-off or turn-on
the regulator output.
Due to the low input-to-output 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 dual- in- line, SO- 8 and Micro8 surface mount packages.
The ‘A’ suffix devices feature an initial output voltage tolerance
±0.5%.
LP2950 and LP2951 Features:
Low Quiescent Bias Current of 75 mA
Low Input-to-Output 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
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.)
TO-92
Z SUFFIX
CASE 29
See detailed ordering and shipping information in the package
dimensions section on pages 13 and 14 of this data sheet.
ORDERING INFORMATION
PIN CONNECTIONS
2
3
1
Pin: 1. Output
2. Ground
3. Input
DPAK
DT SUFFIX
CASE 369A
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
SO-8
D SUFFIX
CASE 751
PDIP-8
N SUFFIX
CASE 626
Micro8
E
DM SUFFIX
CASE 846A
1
3
http://onsemi.com
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| LP2951ACDM-3.3 | Micropower Voltage Regulators |
| LP2951ACD | Micropower Voltage Regulators |
| LP2951ACN | Micropower Voltage Regulators |
| LP2951CM-3.3 | 150mA ADJUSTABLE VOLTAGE REGULATOR |
| LP2951CM-5 | 150mA ADJUSTABLE VOLTAGE REGULATOR |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LP2951ACDM3.0 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:100 mA, Low Power Low Dropout Voltage Regulator |
| LP2951ACDM-3.0 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Micropower Voltage Regulators |
| LP2951ACDM-3.0R2 | 功能描述:低压差稳压器 - LDO 3V 100mA Low Power RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LP2951ACDM-3.0RG | 功能描述:低压差稳压器 - LDO ANA 100MA 3V LDO VREG RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LP2951ACDM3.3 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:100 mA, Low Power Low Dropout Voltage Regulator |
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