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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： | 4/10页 |
| 文件大小： | 116K |
| 代理商： | L4949 |
L4949, NCV4949
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (continued) (VCC = 14 V, 40°C < TA < 125°C, unless otherwise specified.)
Characteristic
Unit
Max
Typ
Min
Symbol
RESET
Reset Threshold Voltage
VResth
Vout 0.5
V
Reset Threshold Hysteresis
VResth,hys
mV
@ TA = 25°C
50
100
200
@ TA = 40 to +125°C
50
300
Reset Pulse Delay (CT = 100 nF, tR ≥ 100 ms)
tResD
55
100
180
ms
Reset Reaction Time (CT = 100 nF)
tResR
5.0
30
ms
Reset Output Low Voltage (RReset = 10 kW to Vout, VCC ≥ 3.0 V)
VResL
0.4
V
Reset Output High Leakage Current (VReset = 5.0 V)
IResH
1.0
mA
Delay Comparator Threshold
VCTth
2.0
V
Delay Comparator Threshold Hysteresis
VCTth, hys
100
mV
SENSE
Sense Low Threshold (VSI Decreasing = 1.5 V to 1.0 V)
VSOth
1.16
1.23
1.35
V
Sense Threshold Hysteresis
VSOth,hys
20
100
200
mV
Sense Output Low Voltage (VSI ≤ 1.16 V, VCC ≥ 3.0 V, RSO = 10 kW to Vout)
VSOL
0.4
V
Sense Output Leakage (VSO = 5.0 V, VSI ≥ 1.5 V)
ISOH
1.0
mA
Sense Input Current
ISI
1.0
0.1
1.0
mA
PREREGULATOR
Preregulator Output Voltage (IZ = 10 mA)
VZ
6.3
V
PIN FUNCTION DESCRIPTION
Pin
SOIC8, PDIP8
Pin
SOIC20W
Symbol
Description
1
19
VCC
Supply Voltage
2
20
Si
Input of Sense Comparator
3
1
VZ
Output of Preregulator
4
2
CT
Reset Delay Capacitor
5
4 7, 14 17
GND
Ground
6
10
Reset
Output of Reset Comparator
7
11
SO
Output of Sense Comparator
8
12
Vout
Main Regulator Output
3, 8, 9, 13, 18
NC
No Connect
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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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