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參數(shù)資料
| 型號： | MC33375 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | LOW DROPOUT MICROPOWER VOLTAGE REGULATOR |
| 中文描述： | 低壓差型微功耗電壓調(diào)節(jié)器 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 213K |
| 代理商： | MC33375 |
MC33375
http://onsemi.com
8
1 mA
Figure 21. Load Transient Response
1.82 V
1.80 V
V
CC
= 3 V
I
LOAD
= 1 mA to 100 mA
T
A
°
C
1.78 V
100 mA
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
t, TIME (ms)
APPLICATIONS INFORMATION
LOAD
C
out
V
out
V
in
C
in
GND
MC33375–xx
Figure 22. Typical Application Circuit
ON/OFF
The MC33375 regulators are designed with internal
current limiting and thermal shutdown making them
user–friendly. Figure 15 is a typical application circuit. The
output capability of the regulator is in excess of 300 mA,
with a typical dropout voltage of less than 260 mV. Internal
protective features include current and thermal limiting.
EXTERNAL CAPACITORS
These regulators require only a 0.33 F (or greater)
capacitance between the output and ground for stability for
1.8 V, 2.5 V, 3.0 V, and 3.3 V output voltage options. Output
voltage options of 5.0 V require only 0.22 F for stability.
The output capacitor must be mounted as close as possible
to the MC33375. If the output capacitor must be mounted
further than two centimeters away from the MC33375, then
a larger value of output capacitor may be required for
stability. A value of 0.68 F or larger is recommended. Most
type of aluminum, tantalum, or multilayer ceramic will
perform adequately. Solid tantalums or appropriate
multilayer ceramic capacitors are recommended for
operation below 25
°
C. An input bypass capacitor is
recommended to improve transient response or if the
regulator is connected to the supply input filter with long
wire lengths, more than 4 inches. This will reduce the
circuit’s sensitivity to the input line impedance at high
frequencies. A 0.33 F or larger tantalum, mylar, ceramic,
or other capacitor having low internal impedance at high
frequencies should be chosen. The bypass capacitor should
be mounted with shortest possible lead or track length
directly across the regulator’s input terminals. Figure 16
shows the ESR that allows the LDO to remain stable for
various load currents.
0
100
E
LOAD CURRENT (mA)
100
200
300
10
1.0
0.1
Figure 23. ESR for V
out
= 3.0V
V
out
= 3.0 V
C
out
= 1.0 F
C
in
= 1.0 F
50
150
250
Stable Region
Applications should be tested over all operating
conditions to insure stability.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC33375ST-1.8T3 | LOW DROPOUT MICROPOWER VOLTAGE REGULATOR |
| MC33375ST-2.5T3 | LOW DROPOUT MICROPOWER VOLTAGE REGULATOR |
| MC33375ST-3.3T3 | LOW DROPOUT MICROPOWER VOLTAGE REGULATOR |
| MC33375ST-5.0T3 | LOW DROPOUT MICROPOWER VOLTAGE REGULATOR |
| MC33375D-2.5R2 | LOW DROPOUT MICROPOWER VOLTAGE REGULATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC33375D-2.5 | 功能描述:低壓差穩(wěn)壓器 - LDO 2.5V 300mA RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MC33375D-2.5G | 功能描述:低壓差穩(wěn)壓器 - LDO 2.5V 300mA RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MC33375D-2.5R2 | 功能描述:低壓差穩(wěn)壓器 - LDO 2.5V 300mA RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MC33375D-2.5R2G | 功能描述:低壓差穩(wěn)壓器 - LDO 2.5V 300mA RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MC33375D25R2 | 制造商:MOTOROLA 功能描述:New |
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