52F2278 [ETC]
IC-SM VOLTAGE REGULATOR 3.3V ; IC- SM稳压3.3V\n
| 型号： | 52F2278 |
| 厂家： | 
ETC |
| 描述： | IC-SM VOLTAGE REGULATOR 3.3V
|
| 文件： | 总12页 (文件大小：218K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
The MC33269 series are low dropout, medium current, fixed and
adjustable, positive voltage regulators specifically designed for use in
low input voltage applications. These devices offer the circuit designer
an economical solution for precision voltage regulation, while keeping
power losses to a minimum.
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SOP–8
D SUFFIX
8
CASE 751
The regulator consists of a 1.0 V dropout composite PNP–NPN pass
transistor, current limiting, and thermal shutdown.
1
• 3.3 V, 5.0 V, 12 V and Adjustable Versions.
2.85 V version available as MC34268.
Gnd/Adj
1
2
3
4
8
7
6
NC
V
V
out
• Space Saving DPAK, SOP–8 and SOT–223 Power Packages
• 1.0 V Dropout
• Output Current in Excess of 800 mA
• Thermal Protection
out
V
in
5
NC
(Top View)
• Short Circuit Protection
• Output Trimmed to 1.0% Tolerance
DPAK
DT SUFFIX
CASE 369A
1
3
DEVICE TYPE / NOMINAL OUTPUT VOLTAGE
MC33269D
MC33269DT
MC33269T
MC33269D–3.3
MC33269DT–3.3
MC33269T–3.3
MC33269ST–3.3
Adj
Adj
Adj
3.3 V
3.3 V
3.3 V
3.3 V
MC33269D–5.0
MC33269DT–5.0
MC33269T–5.0
MC33269D–12
MC33269DT–12
MC33269T–12
5.0 V
5.0 V
5.0 V
12 V
12 V
12 V
1. Gnd/Adj
2. V
out
3. V
1
2
3
in
SOT–223
ST SUFFIX
CASE 318E
(Top View)
1
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
TO–220AB
T SUFFIX
CASE 221A
1
Pin: 1. Gnd/Adj
2
3
2. V
out
3. V
in
1 2 3
(Top View)
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
ORDERING INFORMATION
Seedetailedorderingandshippinginformationinthepackage
dimensions section on page 7 of this data sheet.
Semiconductor Components Industries, LLC, 2000
1
Publication Order Number:
April, 2000 – Rev. 8
MC33269/D
MC33269
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Input Voltage
V
in
20
V
Power Dissipation
Case 369A (DPAK)
T
A
= 25°C
P
D
Internally Limited
W
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 751 (SOP–8)
θ
θ
92
6.0
°C/W
°C/W
JA
JC
T
= 25°C
P
θ
θ
Internally Limited
W
°C/W
°C/W
A
D
JA
JC
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 221A
160
25
T
= 25°C
P
θ
θ
Internally Limited
W
°C/W
°C/W
A
D
JA
JC
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 318E
65
5.0
T
= 25°C
P
θ
θ
Internally Limited
W
°C/W
°C/W
A
D
JA
JC
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
245
15
Operating Junction Temperature Range
Storage Temperature
T
–40 to +150
–55 to +150
°C
°C
J
T
stg
NOTE: ESD data available upon request.
ELECTRICAL CHARACTERISTICS (C = 10 µF, T = 25°C, for min/max values T = –40°C to +125°C, unless otherwise noted.)
O
A
J
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (I
= 10 mA, T = 25°C)
V
O
V
out
J
3.3 Suffix (V
5.0 Suffix (V
12 Suffix (V
= 5.3 V)
= 7.0 V)
= 14 V)
3.27
4.95
11.88
3.3
5.0
12
3.33
5.05
12.12
CC
CC
CC
Output Voltage (Line, Load and Temperature) (Note 1.)
V
O
V
(1.25 V ≤ V – V
in
≤ 15 V, I
≤ 10 V, I
= 500 mA)
= 800 mA)
out
out
out
out
(1.35 V ≤ V – V
in
3.3 Suffix
5.0 Suffix
12 Suffix
3.23
4.9
11.76
3.3
5.0
12
3.37
5.1
12.24
Reference Voltage (I
= 10 mA, V – V
in out
= 2.0 V, T = 25°C)
V
ref
1.235
1.25
1.265
V
V
out
for Adjustable Voltage
J
Reference Voltage (Line, Load and Temperature) (Note 1.)
V
ref
1.225
1.25
1.275
(1.25 V ≤ V – V
(1.35 V ≤ V – V
in
≤ 15 V, I
≤ 10 V, I
= 500 mA)
= 800 mA)
in
out
out
out
out
for Adjustable Voltage
Line Regulation
Reg
–
–
–
–
0.3
0.5
%
line
(I
out
= 10 mA, V = [V
in out
+ 1.5 V] to V = 20 V, T = 25°C)
in
J
Load Regulation (V = V
in
+ 3.0 V, I
= 10 mA to 800 mA, T = 25°C)
Reg
%
V
out
out
J
load
Dropout Voltage
V
in
– V
out
(I
out
(I
out
= 500 mA)
= 800 mA)
–
–
1.0
1.1
1.25
1.35
Ripple Rejection
(10 Vpp, 120 Hz Sinewave; I
RR
55
–
–
dB
= 500 mA)
out
= 10 V)
Current Limit (V – V
in out
I
800
–
–
mA
mA
Limit
Quiescent Current (Fixed Output)
(1.5 V ≤ V ≤ 3.3 V)
I
Q
–
–
5.5
–
8.0
20
out
≤ 12 V)
(5 V ≤ V
out
1. The MC33269–12, V – V
in out
is limited to 8.0 V maximum, because of the 20 V maximum rating applied to V .
in
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2
MC33269
ELECTRICAL CHARACTERISTICS (C = 10 µF, T = 25°C, for min/max values T = –40°C to +125°C, unless otherwise noted.)
O
A
J
Characteristic
Symbol
Min
Typ
Max
Unit
Minimum Required Load Current
I
mA
Load
Fixed Output Voltage
Adjustable Voltage
–
8.0
–
–
0
–
Adjustment Pin Current
I
–
–
120
µA
Adj
Internal Schematic
V
in
V
out
Trim Links
V
Adj
Gnd
This device contains 38 active transistors.
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3
MC33269
1.5
1.3
1.1
0.9
0.7
0.5
T = –40°C
100
A
T = 25°C
A
mV/Div
C
= 10 µF
= 10 µF Tantalum
O
in
C
T = 125°C
A
O
V = V + 3.0 V
in
Preload = 0.1 A
0.5 A
0 A
0
200
400
600
800
1000
20 ms/DIV
I , OUTPUT LOAD CURRENT (mA)
O
Figure 1. Dropout Voltage versus
Output Load Current
Figure 2. Transient Load Regulation
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
1100
1060
1020
980
I
O
= 800 mA
T = 25°C
MC33269D–XX
L = 25 mm Copper
A
940
0
900
–55
0
2.0
4.0
6.0
8.0
10
12
14
16
–25
0
25
50
75
100
125
T , AMBIENT TEMPERATURE (°C)
A
INPUT–OUTPUT VOLTAGE DIFFERENTIAL (V)
Figure 3. Dropout Voltage
versus Temperature
Figure 4. MC33269–XX Output DC Current versus
Input–Output Differential Voltage
70
70
60
V = 3.3 V or 5.0 V
O
60
50
40
30
20
V = 12 V
O
50
40
30
20
V = 8.0 V
in
V
= 5.0 V
out
V = V + 3.0 V
I = 800 mA
in
O
L
I = 800 mA
C
= 22 µF
L
Adj
T = 25°C
T = 25°C
A
A
0.1
1.0
10
100
0.1
1.0
10
100
f, FREQUENCY (kHz)
f, FREQUENCY (kHz)
Figure 5. MC33269 Ripple Rejection
versus Frequency
Figure 6. MC33269–ADJ Ripple Rejection
versus Frequency
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4
MC33269
170
150
130
110
90
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
100
90
80
70
60
50
40
P
for T = 50°C
A
D(max)
Free Air
Mounted
Vertically
P
for T = 50°C
A
D(max)
2.0 oz. Copper
L
2.4
2.0
1.6
1.2
0.8
0.4
Minimum
Size Pad
Graph represents symmetrical layout
L
2.0 oz.
L
Copper
70
L
3.0 mm
50
R
θJA
R
θJA
30
0
5.0
10
15
20
25
30
0
10
20
30
40
50
L, LENGTH OF COPPER (mm)
L, LENGTH OF COPPER (mm)
Figure 8. DPAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
Figure 7. SOP–8 Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
280
2.50
P
for T = 50°C
A
D(max)
Free Air
240
200
160
120
80
1.25
0.83
0.63
0.50
0.42
0.35
Mounted
Vertically
2.0 oz. Copper
L
Minimum
Size Pad
L
R
θJA
15
L, LENGTH OF COPPER (mm)
40
0
5.0
10
20
25
30
Figure 9. SOT–223 Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
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5
MC33269
APPLICATIONS INFORMATION
Figures 10 through 14 are typical application circuits. The
supply input filter with long wire lengths. This will reduce
the circuit’s sensitivity to the input line impedance at high
frequencies. A 0.33 µF 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. Applications
should be tested over all operating conditions to insure
stability.
Internal thermal limiting circuitry is provided to protect
the integrated circuit in the event that the maximum junction
temperature is exceeded. When activated, typically at
170°C, the output is disabled. There is no hysteresis built
into the thermal limiting circuit. As a result, if the device is
overheating, the output will appear to be oscillating. This
feature is provided to prevent catastrophic failures from
accidental device overheating. It is not intended to be used
as a substitute for proper heatsinking.
output current capability of the regulator is in excess of
800 mA, with a typical dropout voltage of less than 1.0 V.
Internal protective features include current and thermal
limiting.
The MC33269 is not internally compensated and thus
requires an external output capacitor for stability. The
capacitor should be at least 10 µF with an equivalent series
resistance (ESR) of less than 10 Ω over the anticipated
operating temperature range. With economical electrolytic
capacitors, cold temperature operation can pose a problem.
As temperature decreases, the capacitance also decreases
and the ESR increases, which could cause the circuit to
oscillate. Solid tantalum capacitors may be a better choice
if small size is a requirement. Also capacitance and ESR of
a solid tantalum capacitor is more stable over temperature.
An input bypass capacitor is recommended to improve
transient response or if the regulator is connected to the
V
V
out
V
V
out
in
in
MC33269
MC33269–XX
C
in
C
O
C
in
R1
R2
10 µF
C
Adj
O
10 µF
Gnd
C
*
Adj
An input capacitor is not necessary for stability, however
it will improve the overall performance.
R2
R1
V
1.25
1
I
R2
out
Adj
Figure 10. Typical Fixed Output Application
*C
is optional, however it will improve the ripple rejection.
Adj
V
R
S
I
out
The MC34269 develops a 1.25 V reference voltage between the
output and the adjust terminal. Resistor R1, operates with
constant current to flow through it and resistor R2. This current
should be set such that the Adjust Pin current causes negligible
drop across resistor R2. The total current with minimum load
should be greater than 8.0 mA.
in
MC33269
C
O
C
in
10 µF
Adj
1.25
I
out
R
S
Figure 11. Typical Adjustable Output Application
Figure 12. Current Regulator
V
in
V
out
MC33269–XX
C
in
V
V
out
in
MC33269
Gnd
C
in
R1
R2
Adj
C
O
10 µF
MC33269–XX
C
10 µF
O
C
in
Gnd
TheSchottky diode in series with the ground leg of the upper
regulator shifts its output voltage higher by the forward
voltage drop of the diode. This will cause the lower device
to remain off until the input voltage is removed.
R
sets the maximum output voltage. Each transistor
2
reduces the output voltage when turned on.
Figure 13. Battery Backed–Up Power Supply
Figure 14. Digitally Controlled Voltage Regulator
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6
MC33269
ORDERING INFORMATION
Package
Device
Shipping Information
MC33269D
SO–8
SO–8
98 Units / Rail
2500 Units / Tape & Reel
75 Units / Rail
MC33269DR2
MC33269DT
MC33269DTRK
MC33269T
DPAK
DPAK
TO–220
SO–8
2500 Units / Tape & Reel
50 Units / Rail
MC33269D–3.3
98 Units / Rail
MC33269DR2–3.3
MC33269DT–3.3
MC33269DTRK–3.3
MC33269ST–3.3T3
MC33269T–3.3
SO–8
2500 Units / Tape & Reel
75 Units / Rail
DPAK
DPAK
SOT–223
TO–220
SO–8
2500 Units / Tape & Reel
4000 Units / Tape & Reel
50 Units / Rail
MC33269D–5.0
98 Units / Rail
MC33269DR2–5.0
MC33269DT–5.0
MC33269DTRK–5.0
MC33269T–5.0
SO–8
2500 Units / Tape & Reel
75 Units / Rail
DPAK
DPAK
TO–220
SO–8
2500 Units / Tape & Reel
50 Units / Rail
MC33269D–12
98 Units / Rail
MC33269DR2–12
MC33269DT–12
MC33269DTRK–12
MC33269T–12
SO–8
2500 Units / Tape & Reel
75 Units / Rail
DPAK
DPAK
TO–220
2500 Units / Tape & Reel
50 Units / Rail
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7
MC33269
PACKAGE DIMENSIONS
SOP–8
D SUFFIX
CASE 751–06
ISSUE T
NOTES:
D
A
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
C
2. DIMENSIONS ARE IN MILLIMETER.
3. DIMENSION D AND E DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS
OF THE B DIMENSION AT MAXIMUM MATERIAL
CONDITION.
8
1
5
4
M
M
0.25
B
H
E
h X 45
MILLIMETERS
B
e
DIM MIN
MAX
1.75
0.25
0.49
0.25
5.00
4.00
A
A1
B
C
D
E
1.35
0.10
0.35
0.19
4.80
3.80
A
C
SEATING
PLANE
L
e
1.27 BSC
0.10
H
h
L
5.80
0.25
0.40
0
6.20
0.50
1.25
7
A1
B
M
S
S
0.25
C B
A
DPAK
DT SUFFIX
CASE 369A–13
ISSUE Z
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
SEATING
PLANE
–T–
2. CONTROLLING DIMENSION: INCH.
C
B
R
INCHES
DIM MIN MAX
MILLIMETERS
E
V
MIN
5.97
6.35
2.19
0.69
0.84
0.94
MAX
6.35
6.73
2.38
0.88
1.01
1.19
A
B
C
D
E
F
0.235
0.250
0.086
0.027
0.033
0.037
0.250
0.265
0.094
0.035
0.040
0.047
4
2
Z
A
K
S
1
3
G
H
J
K
L
R
S
U
V
Z
0.180 BSC
4.58 BSC
U
0.034
0.018
0.102
0.040
0.023
0.114
0.87
0.46
2.60
1.01
0.58
2.89
0.090 BSC
2.29 BSC
F
J
0.175
0.020
0.020
0.030
0.138
0.215
0.050
–––
0.050
–––
4.45
0.51
0.51
0.77
3.51
5.46
1.27
–––
1.27
–––
L
H
D 2 PL
M
G
0.13 (0.005)
T
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8
MC33269
PACKAGE DIMENSIONS
SOT–223
ST SUFFIX
CASE 318E–04
ISSUE K
A
F
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
4
2
INCHES
DIM MIN MAX
MILLIMETERS
S
B
MIN
6.30
3.30
1.50
0.60
2.90
2.20
MAX
6.70
3.70
1.75
0.89
3.20
2.40
0.100
0.35
2.00
1.05
10
1
3
A
B
C
D
F
G
H
J
0.249
0.130
0.060
0.024
0.115
0.087
0.263
0.145
0.068
0.035
0.126
0.094
D
L
0.0008 0.0040 0.020
G
0.009
0.060
0.033
0
0.014
0.078
0.041
10
0.24
1.50
0.85
0
J
K
L
M
S
C
0.08 (0003)
0.264
0.287
6.70
7.30
M
H
K
TO–220AB
T SUFFIX
CASE 221A–09
ISSUE AA
NOTES:
SEATING
PLANE
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
–T–
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION Z DEFINES A ZONE WHERE ALL
BODY AND LEAD IRREGULARITIES ARE
ALLOWED.
C
B
F
T
S
4
1
INCHES
DIM MIN MAX
0.620 14.48
MILLIMETERS
MIN
MAX
15.75
10.28
4.82
0.88
3.73
2.66
3.93
0.64
14.27
1.52
5.33
3.04
2.79
1.39
6.47
1.27
–––
A
K
Q
A
B
C
D
F
0.570
0.380
0.160
0.025
0.142
0.095
0.110
0.018
0.500
0.045
0.190
0.100
0.080
0.045
0.235
0.000
0.045
–––
0.405
0.190
0.035
0.147
0.105
0.155
0.025
9.66
4.07
0.64
3.61
2.42
2.80
0.46
2
3
U
H
G
H
J
Z
K
L
N
Q
R
S
T
U
V
Z
0.562 12.70
0.060
0.210
0.120
0.110
0.055
0.255
0.050
–––
1.15
4.83
2.54
2.04
1.15
5.97
0.00
1.15
–––
L
R
V
J
G
D
N
0.080
2.04
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9
MC33269
Notes
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10
MC33269
Notes
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11
MC33269
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MC33269/D
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