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參數(shù)資料
| 型號(hào)： | MC33264D-4.75 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | LOW DROPOUT MICROPOWER VOLTAGE REGULATORS WITH ON/OFF CONTROL |
| 中文描述： | 4.75 V FIXED POSITIVE LDO REGULATOR, 0.23 V DROPOUT, PDSO8 |
| 封裝： | PLASTIC, SO-8 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 173K |
| 代理商： | MC33264D-4.75 |
MC33264
4
MOTOROLA ANALOG IC DEVICE DATA
,
–50
300
–55
5.04
0.3
240
0
1000
RL
,
VI
TA, TEMPERATURE (
°
C)
TA, AMBIENT TEMPERATURE (
°
C)
,
VI
IO, OUTPUT CURRENT (mA)
,
Ii
Vin, INPUT VOLTAGE (V)
Figure 3. Input Current versus Input Voltage
Figure 4. Output Voltage versus Temperature
Figure 5. Dropout Voltage versus Output Current
Figure 6. Dropout Voltage versus Temperature
No Load
TA = 25
°
C
MC33264D–5.0
2.0
4.0
8.0
10
12
0
50
75
100
1.0
10
400
0
50
100
150
800
600
400
200
0
RL
,
VI
200
160
120
80
40
0
250
200
150
100
50
55
50
45
40
35
30
5.02
5.01
5.00
4.99
4.96
125
IO = 10 mA
TA = 25
°
C
MC33264D–5.0
RL = 40 to 50 k
CL = 1.0
μ
F
TA = 25
°
C
MC33264D–5.0
RL = 5.0 k
TA = 25
°
C
MC33264D–5.0
RL = 100
RL = 5.0 k
RL = 500
100
6.0
–25
25
5.03
4.98
4.97
μ
A
APPLICATION INFORMATION
Introduction
The MC33264 regulators are designed with internal
current limiting and thermal shutdown making them
user–friendly. These regulators require only 0.33
μ
F (or
greater) capacitance between the output terminal and ground
for stability for 2.8 V, 3.0 V, 3.3 V and 3.8 V output voltage
options. Output voltage options of 4.0 V, 4.75 V and 5.0 V
require only 0.22
μ
F for stability. The output capacitor must
be mounted as close to the MC33264 as possible. If the
output capacitor must be mounted further than two
centimeters away from the MC33264, then a larger value of
output capacitor may be required for stability. A value of 0.68
μ
F or larger is recommended. Most types of aluminum,
tantalum or multilayer ceramic will perform adequately. Solid
tantalums or appropriate multilayer ceramic capacitors are
recommended for operation below 25
°
C.
A bypass capacitor is recommended across the MC33264
input to ground if more than 4.0 inches of wire connects the
input to either a battery or power supply filter capacitor.
On/Off Control
On/Off control of the regulator may be accomplished in
either of two ways. Pin 3 may be tied to circuit ground and a
positive logic control applied to Pin 2. The regulator will be
turned on by a positive (>2.4 V) level, typically 5.0 V with
respect to ground, sourcing a typical current of 6.0
μ
A. The
regulator will turn off if the control input is a logic “0”
(<0.5 V). Alternatively, Pin 2 may be tied to the regulator
input voltage and a negative logic control applied to Pin 3.
The regulator will be turned on when the control voltage is
less than Vin – 2.4 V, sinking a typical current of 18
μ
A when
Vin = 6.0 V. The regulator is off when the control input is
open or greater than Vin – 0.2 V.
Programming The Output Voltage
The MC33264 output voltage is automatically set using its
internal voltage divider. Alternatively, it may be programmed
within a typical
±
15% range of its preset output voltage. An
external pair of resistors is required, as shown in Figure 7.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC33264D-5.0 | LOW DROPOUT MICROPOWER VOLTAGE REGULATORS WITH ON/OFF CONTROL |
| MC33267T | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| MC33267T | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| MC33267TV | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| MC33267D2T | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC33264D-5.0 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC33265 | 制造商:SPC Multicomp 功能描述:HEATSINK TO220/218 3.9/W NOTCHED 制造商:SPC Multicomp 功能描述:HEATSINK TO220/218 3.9C/W NOTCHED 制造商:SPC Multicomp 功能描述:HEAT SINK; Packages Cooled:TO-218 / TO-220; Thermal Resistance:3.9C/W; External Height - Imperial:1.5"; External Height - Metric:38.1mm; External Width - Imperial:1.638"; External Width - Metric:41.6mm; External Length - Metric:25mm;RoHS Compliant: Yes |
| MC33266 | 制造商:SPC Multicomp 功能描述:HEATSINK TO220/218 3.6/W NOTCHED 制造商:SPC Multicomp 功能描述:HEATSINK TO220/218 3.6C/W NOTCHED 制造商:SPC Multicomp 功能描述:HEAT SINK; Packages Cooled:TO-218 / TO-220; Thermal Resistance:3.6C/W; External Height - Imperial:2"; External Height - Metric:50.8mm; External Width - Imperial:1.638"; External Width - Metric:41.6mm; External Length - Metric:25mm ;RoHS Compliant: Yes |
| MC33267 | 制造商:SPC Multicomp 功能描述:HEATSINK TO220/218 3.1/W NOTCHED 制造商:SPC Multicomp 功能描述:HEATSINK TO220/218 3.1C/W NOTCHED 制造商:PRIVATE LABEL 功能描述:HEATSINK TO220/218 3.1C/W NOTCHED, Packages Cooled:TO-218, TO-220, Thermal Resi 制造商:SPC Multicomp 功能描述:HEAT SINK, Packages Cooled:TO-218 / TO-220, Thermal Resistance:3.1C/W, External Height - Imperial:2.5", External Height - Metric:63.5mm, External Width - Imperial:1.638", External Width - Metric:41.6mm, External Length - Metric:25mm, RoHS Compliant: Yes |
| MC33267D2T | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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