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參數(shù)資料
| 型號： | ADP3303 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 200 mA Low Dropout Linear Regulator(高精度低壓差線性穩(wěn)壓器) |
| 中文描述： | 200毫安低壓差線性穩(wěn)壓器（高精度低壓差線性穩(wěn)壓器） |
| 文件頁數(shù)： | 8/8頁 |
| 文件大?。?/td> | 210K |
| 代理商： | ADP3303 |
ADP3303
–8–
REV. 0
C
P
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
8-Lead Small Outline IC
(SO-8)
0.1968 (5.00)
0.1890 (4.80)
8
5
4
1
0.2440 (6.20)
0.2284 (5.80)
PIN 1
0.1574 (4.00)
0.1497 (3.80)
0.0688 (1.75)
0.0532 (1.35)
SEATING
PLANE
0.0098 (0.25)
0.0040 (0.10)
0.0192 (0.49)
0.0138 (0.35)
0.0500
(1.27)
BSC
0.0098 (0.25)
0.0075 (0.19)
0.0500 (1.27)
0.0160 (0.41)
8
°
0
°
0.0196 (0.50)
°
ADP3303-5.0
OUT
IN
GND
OUTPUT SELECT
5V
0V
C1
1.0μF
ADP3303-3.3
OUT
IN
GND
C2
0.47μF
V
OUT
= 5V/3.3V
V
IN
= 5.5V TO 12V
SD
SD
Figure 23. Crossover Switch
Higher Output Current
The ADP3303 can source up to 200 mA without any heatsink
or pass transistor. If higher current is needed, an appropriate
pass transistor can be used, as in Figure 24, to increase the
output current to 1 A.
V
IN
= 6V TO 8V
V
OUT
= 5V @ 1A
MJE253*
C2
10μF
C1
47μF
R1
50
*AAVID531002 HEAT SINK IS USED
IN
OUT
ERR
GND
SD
ADP3303-5
Figure 24. High Output Current Linear Regulator
Constant Dropout Post Regulator
The circuit in Figure 25 provides high precision with low
dropout for any regulated output voltage. It significantly reduces
the ripple from a switching regulator while providing a constant
dropout voltage, which limits the power dissipation of the LDO
to 60 mW. The ADP3000 used in this circuit is a switching
regulator in the step-up configuration.
D1
1N5817
C2
100μF
10V
L1
6.8μH
R1
120
ADP3303-3.3
IN
SD
OUT
GND
C3
2.2μF
3.3V @ 160mA
C1
100μF
10V
ADP3000-ADJ
I
LIM
V
IN
SW1
GND
SW2
FB
V
IN
= 2.5V TO 3.5V
R2
30.1k
1%
Q1
2N3906
Q2
2N3906
R4
274k
R3
124k
1%
Figure 25. Constant Dropout Post Regulator
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADP3303A | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Accuracy anyCAP⑩ Adjustable 200 mA Low Dropout Linear Regulator |
| ADP3303A5 | 制造商:Analog Devices 功能描述: |
| ADP3303AARU-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Accuracy anyCAP⑩ Adjustable 200 mA Low Dropout Linear Regulator |
| ADP3303AARU-REEL7 | 制造商:Analog Devices 功能描述: |
| ADP3303AR-2.7 | 制造商:Analog Devices 功能描述:LDO Regulator Pos 2.7V 0.3A 8-Pin SOIC N 制造商:Rochester Electronics LLC 功能描述:HI ACCURACY LOW DROPOUT LINEAR REGULATOR - Bulk |
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