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参数资料
| 型号： | LP2954IM |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 5V and Adjustable Micropower Low-Dropout Voltage Regulators |
| 中文描述： | 1.23 V-29 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.8 V DROPOUT, PDSO8 |
| 封装： | SO-8 |
| 文件页数： | 1/13页 |
| 文件大小： | 336K |
| 代理商： | LP2954IM |
LP2954/LP2954A
5V and Adjustable Micropower Low-Dropout Voltage
Regulators
General Description
The LP2954 is a 5V micropower voltage regulator with very
low quiescent current (90 μA typical at 1 mA load) and very
low dropout voltage (typically 60 mV at light loads and
470 mV at 250 mA load current).
The quiescent current increases only slightly at dropout
(120 μA typical), which prolongs battery life.
The LP2954 with a fixed 5V output is available in the
three-lead TO-220 and TO-263 packages. The adjustable
LP2954 is provided in an 8-lead surface mount, small outline
package. The adjustable version also provides a resistor net-
work which can be pin strapped to set the output to 5V.
Reverse battery protection is provided.
The tight line and load regulation (0.04% typical), as well as
very low output temperature coefficient make the LP2954
well suited for use as a low-power voltage reference.
Output accuracy is guaranteed at both room temperature
and over the entire operating temperature range.
Features
n
5V output within 1.2% over temperature (A grade)
n
Adjustable 1.23 to 29V output voltage available
(LP2954IM and LP2954AIM)
n
Guaranteed 250 mA output current
n
Extremely low quiescent current
n
Low dropout voltage
n
Reverse battery protection
n
Extremely tight line and load regulation
n
Very low temperature coefficient
n
Current and thermal limiting
n
Pin compatible with LM2940 and LM340 (5V version
only)
n
Adjustable version adds error flag to warn of output drop
and a logic-controlled shutdown
Applications
n
High-efficiency linear regulator
n
Low dropout battery-powered regulator
Package Outline and Ordering Information
TO-220 3–Lead Plastic Package
DS011128-2
Front View
Order Number LP2954AIT or LP2954IT
See NS Package T03B
SO-8 Small Outline Surface Mount
DS011128-33
Top View
Order Number LP2954AIM or LP2954IM
See NS Package M08A
June 1999
L
1999 National Semiconductor Corporation
DS011128
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LP2954IT | 5V and Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2954AIS | 5V and Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2954IS | 5V and Adjustable Micropower Low-Dropout Voltage Regulators |
| LP2956AMJ-QML | Dual Micropower Low-Dropout Voltage Regulators |
| LP2956AIM | Dual Micropower Low-Dropout Voltage Regulators |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LP2954IM/NOPB | 功能描述:低压差稳压器 - LDO 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 |
| LP2954IM/NOPB | 制造商:Texas Instruments 功能描述:Voltage Regulator IC |
| LP2954IMX | 功能描述:低压差稳压器 - LDO 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 |
| LP2954IMX/NOPB | 功能描述:低压差稳压器 - LDO 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 |
| LP2954IS | 功能描述:低压差稳压器 - LDO 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 |
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