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参数资料
| 型号： | L4949 |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 线性稳压 |
| 英文描述： | 100 mA, 5.0 V, Low Dropout Voltage Regulator with Power-On Reset(100mA, 5.0V，带上电复位的低压差稳压器) |
| 中文描述： | 一〇 〇毫安，5.0 V固定，低压差线性稳压器具有上电复位（100mA的和5.0V，带上电复位的低压差稳压器） |
| 文件页数： | 1/10页 |
| 文件大小： | 116K |
| 代理商： | L4949 |
Semiconductor Components Industries, LLC, 2006
June, 2006 Rev. 9
1
Publication Order Number:
L4949/D
L4949, NCV4949
100 mA, 5.0 V, Low Dropout
Voltage Regulator with
PowerOn Reset
The L4949 is a monolithic integrated 5.0 V voltage regulator with a
very low dropout and additional functions such as poweron reset and
input voltage sense.
It is designed for supplying the microcomputer controlled systems
especially in automotive applications.
Features
Operating DC Supply Voltage Range 5.0 V to 28 V
Transient Supply Voltage Up to 40 V
Extremely Low Quiescent Current in Standby Mode
High Precision Standby Output Voltage 5.0 V ±1%
Output Current Capability Up to 100 mA
Very Low Dropout Voltage Less Than 0.4 V
Reset Circuit Sensing The Output Voltage
Programmable Reset Pulse Delay With External Capacitor
Voltage Sense Comparator
Thermal Shutdown and Short Circuit Protections
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
PbFree Packages are Available
Regulator
1.23 Vref
2.0 V
2.0
mA
Reset
1.23 V
Sense
GND
Sense
Output
(So)
Reset
Sense
Input
(Si)
Supply
Voltage (VCC)
VZ
Output
Voltage (Vout)
CT
38
4
6
7
5
2
1
Vs
+
+
Preregulator
6.0 V
Figure 1. Representative Block Diagram
http://onsemi.com
(Top View)
PIN CONNECTIONS
1
2
3
4
8
7
6
5
VZ
CT
GND
Si
VCC
Reset
So
Vout
SOIC8
D SUFFIX
CASE 751
PDIP8
N SUFFIX
CASE 626
1
8
1
8
1
8
L4949N
AWL
YYWWG
L4949
ALYWD
G
1
8
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
ORDERING INFORMATION
A
= Assembly Location
WL, L
= Wafer Lot
YY, Y
= Year
WW, W = Work Week
G or
G = PbFree Device
MARKING DIAGRAMS
1
20
SOIC20W
DW SUFFIX
CASE 751D
20
1
L4949DW
AWLYYWWG
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L4949_06 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:100 mA, 5.0 V, Low Dropout Voltage Regulator with Power−On Reset |
| L4949D | 功能描述:低压差稳压器 - LDO 5V 100mA w/Power-On 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 |
| L4949DG | 功能描述:低压差稳压器 - LDO 5V 100mA w/Power-On Reset 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 |
| L4949DG | 制造商:ON Semiconductor 功能描述:Linear Voltage Regulator IC |
| L4949DR2 | 功能描述:低压差稳压器 - LDO 5V 100mA w/Power-On 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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