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參數(shù)資料
| 型號： | L4949N |
| 廠商： | MOTOROLA INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | MULTIFUNCTION VERY LOW DROPOUT VOLTAGE REGULATOR |
| 中文描述： | 5 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 191K |
| 代理商： | L4949N |
L4949
5
MOTOROLA ANALOG IC DEVICE DATA
6.0
5.0
4.0
2.0
1.0
1.15
VSI, SENSE INPUT VOLTAGE (V)
1.0
0
TJ = 25
°
C
V
1.2
1.25
1.3
1.35
1.4
1.45
1.5
3.0
Resistor 10 k
from Sense Output
to 5.0 V
1.1
1.05
1.4
1.38
1.36
1.34
1.3
1.28
–40
–20
TJ, JUNCTION TEMPERATURE (
°
C)
1.2
Upper Threshold
V
0
20
40
60
80
100
120
1.32
Lower Threshold
1.26
1.24
1.22
Figure 9. Sense Output versus
Sense Input Voltage
Figure 10. Sense Thresholds versus
Junction Temperature
TYPICAL CHARACTERIZATION CURVES
(continued)
APPLICATION INFORMATION
Supply Voltage Transient
High supply voltage transients can cause a reset output
signal perturbation. For supply voltages greater than 8.0 V
the circuit shows a high immunity of the reset output against
supply transients of more than 100 V/
μ
s. For supply voltages
less than 8.0 V supply transients of more than 0.4 V/
μ
s can
cause a reset signal perturbation. To improve the transient
behavior for supply voltages less than 8.0 V a capacitor at Pin
3 can be used. A capacitor at Pin 3 (C3
≤
1.0
μ
F) reduces
also the output noise.
S
o
VZ
(optional)
Vout
Vout
Vbat
C
s
CO
C3
RSO
10 k
Regulator
1.23 Vref
2.0 V
2.0
μ
A
Reset
1.23 V
Sense
Gnd
Reset
Si
VCC
CT
3
8
4
6
7
5
2
1
VCC
+
–
+
–
Preregulator
6.0 V
10 k
Figure 11. Application Schematic
NOTES:
1. For stability: Cs
≥
1.0
μ
F, CO
≥
4.7
μ
F, ESR < 10
at 10 kHz
2. Recommended for application: Cs = CO = 10
μ
F
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| L4952 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:VOLTAGE REGULATOR FOR CAR RADIO APPLICATIONS |
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| L4952D013TR | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 8.6V 0.15A LDO RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| L4952TS | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3.1W Stereo-SE Audio Power Amplifier with DC Volume Control |
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