MC33267TV [ONSEMI]
LOW DROPOUT REGULATOR with POWER-UP RESET; 低压差稳压器具有上电复位
| 型号： | MC33267TV |
| 厂家： | 
ONSEMI |
| 描述： | LOW DROPOUT REGULATOR with POWER-UP RESET |
| 文件： | 总8页 (文件大小：132K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Order this document by MC33267/D
The MC33267 is a positive fixed 5.0 V regulator that is specifically
designed to maintain proper voltage regulation with an extremely low
input–to–output voltage differential. This device is capable of supplying
output currents in excess of 500 mA and contains internal current limiting and
thermal shutdown protection. Also featured is an on–chip power–up reset
circuit that is ideally suited for use in microprocessor based systems.
Whenever the regulator output voltage is below nominal, the reset output is
held low. A programmable time delay is initiated after the regulator has
reached its nominal level and upon timeout, the reset output is released.
Due to the low dropout voltage specifications, the MC33267 is ideally
suited for use in battery powered industrial and consumer equipment where
an extension of useful battery life is desirable. This device is contained in an
economical five lead TO–220 type package.
LOW DROPOUT
REGULATOR with
POWER–UP RESET
SEMICONDUCTOR
TECHNICAL DATA
Pin 1. V
Input
CC
2. Reset
3. Ground
4. Delay
5. Output
• Low Input–to–Output Voltage Differential
• Output Current in Excess of 500 mA
• On–Chip Power–Up Reset Circuit with Programmable Delay
• Internal Current Limiting with Thermal Shutdown
• Economical Five Lead TO–220 Type Packages
1
5
ORDERING INFORMATION
Tested Operating
T SUFFIX
PLASTIC PACKAGE
CASE 314D
Temperature Range
Device
MC33267T
Package
Plastic Power
Plastic Power
Surface Mount
T = –40 ° to +125°C
J
MC33267TV
MC33267D2T
T = –40 ° to +105°C
J
1
5
TV SUFFIX
PLASTIC PACKAGE
CASE 314B
Representative Block Diagram
Heatsink surface connected to Pin 3.
Input
Output
5
1
3.01
R
20 µA
Reference
1.25 V
Reset
2
Reset
0.03
R
1
+
5
3.8 V
200
R
Delay
4
Thermal
D2T SUFFIX
PLASTIC PACKAGE
CASE 936A
Delay
Overcurrent
Detector
+
2
(D PAK)
1.25 V
Ground
3
Heatsink surface (shown as
terminal 6 in case outline
drawing) is connected to Pin 3.
This device contains 37 active transistors.
Motorola, Inc. 1996
Rev 1
MC33267
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Vdc
V
Input Voltage Range
Delay Voltage Range
Delay Sink Current
Reset Voltage Range
Reset Sink Current
V
in
– 20 to + 40
V
DLYR
– 0.3 to V
25
O
I
mA
V
DLY(sink)
V
RR
– 0.3 to +15
50
I
mA
R(sink)
Power Dissipation
Case 314B and 314D (TO–220 Type)
T
= 25°C
P
Internally Limited
W
°C/W
°C/W
A
D
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
R
θJA
R
θJC
62.5
4.0
2
Case 936A (D PAK) [Note 1]
= 90°C
T
P
D
Internally Limited
W
°C/W
°C/W
A
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
R
θJA
R
θJC
70
5.0
Operating Junction Temperature Range
T
–40 to +150
–55 to +150
°C
°C
J
Storage Temperature Range
2
T
stg
NOTE: 1. D PAK Junction–to–Ambient Thermal Resistance is for vertical mounting. Refer to Figure 7
for board mounted thermal resistance.
ELECTRICAL CHARACTERISTICS (V = 14.4 V, I = 5.0 mA, C = 100 µF, C
≤ 0.3 Ω, T = 25°C (Note 2), unless otherwise noted.)
J
in
O
O
O(ESR)
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (I = 5.0 mA to 500 mA, V = 6.0 V to 28 V)
in
V
O
V
O
T = 25°C
4.95
4.9
5.05
–
5.15
5.2
J
T = – 40° to +125°C
J
Line Regulation (V = 6.0 V to 26 V)
in
Reg
–
–
3.0
1.0
50
50
mV
mV
mA
line
Load Regulation (I = 5.0 mA to 500 mA)
O
Reg
load
Bias Current
I
B
I
O
I
O
I
O
I
O
= 0 mA
= 150 mA
= 500 mA
–
–
–
–
12
22
100
120
20
40
200
300
= 500 mA, V = 6.2 V
in
Ripple Rejection (f = 120 Hz, V = 7.0 V to 17 V,
in
RR
dB
I
= 350 mA, C = 100 µF)
60
–
80
–
O
O
Dropout Voltage (I = 500 mA)
V
V
– V
O
0.58
0.8
V
V
O
in
Delay Comparator Threshold (V Decreasing)
O
4.8
12
3.6
–
V
O
– 0.15
20
V
O
– 0.08
28
th(DLY)
Delay Pin Source Current
I
µA
V
DLY(source)
Reset Comparator Threshold
V
3.8
4.0
th(R)
Reset Sink Saturation (I
= 10 mA)
V
0.2
0.8
V
sink
CE(sat)
Reset Off–State Leakage (V
= 5.0 V)
I
–
0.3
10
µA
CE
R(leak)
NOTE: 2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
2
MOTOROLA ANALOG IC DEVICE DATA
MC33267
Figure 1. Typical Application Circuit
Input
1
Output
5
V
V
O
in
+
+
C
0.1
C
100
in
O
3.01
R
20 µA
Reference
1.25 V
Reset
Output
Reset
3.8 V
2
0.03
R
+
R
Delay
4
Thermal
Delay
+
200
C
DLY
Overcurrent
Detector
+
1.25 V
=
Ground
3
Sink Only
Positive True Logic
APPLICATION CIRCUIT INFORMATION
The MC33267 is a low dropout, positive fixed 5.0 V,
500 mA regulator. Protection features include output current
limiting and thermal shutdown. System protection consists of
an on–chip power–up microprocessor reset circuit.
decrease and the ESR will increase drastically, causing the
circuit to oscillate. Quality electrolytic capacitors with
extended temperature ranges of – 40°C to + 85°C and
– 55°C to +105°C are readily available. It is suggested that
oven testing of the entire circuit be performed with maximum
load, minimum input voltage, and minimum ambient
temperature.
A typical applications circuit is shown in Figure 1. The input
bypass capacitor (C ) is recommended if the regulator is
in
located an appreciable distance (≥ 4″) from the supply input
filter. This will reduce the circuit’s sensitivity to the input line
impedance at high frequencies.
Figure 2 shows the reset circuit timing relationship. Note
that whenever the regulator’s output is less than 4.9 V, the
These regulators are not internally compensated and thus
delay capacitor (C ) is immediately discharged, and the
reset output is held in a low state. As the regulator’s output
voltage increases beyond 4.97 V, the delay comparator will
DLY
require an external output capacitor (C ) for stability. The
O
recommended capacitance is 100 µF with an equivalent
series resistance (ESR) of less than 0.3 Ω. A minimum
capacitance of 33 µF with a maximum ESR of 3.0 Ω can be
used in applications where space is a premium, however,
these limits must be observed over the entire operating
temperature range of the regulator circuit.
allow the 20 µA current source to charge C
. The reset
DLY
output will go to a high state when C
threshold of the reset comparator. The reset delay time is
controlled by the value selected for C . The required
crosses the 3.8 V
DLY
DLY
system reset time is governed by the microprocessor and
usually a reset signal which lasts several machine cycles is
sufficient.
With economical electrolytic capacitors, cold temperature
operation can pose a serious stability problem. As the
electrolyte freezes, around – 30°C, the capacitance will
3
MOTOROLA ANALOG IC DEVICE DATA
MC33267
Figure 2. Timing Waveforms
5.05 V
4.97 V
4.90 V
Regulator Output
(Pin 5)
150 mV
4.70 V
3.80 V
Delay Capacitor
(Pin 4)
0.48 V
5.05 V
0 V
Reset Output
(Pin 2)
t
t
DLY
DLY
Figure 3. Reset Output versus Input Voltage
Figure 4. Output Voltage versus Input Voltage
6.0
5.0
6.0
5.0
T
= 25°C
J
R
T
= 10 k to V
L
O
= 25°C
J
R
= ∞
L
4.0
3.0
2.0
1.0
0
4.0
3.0
2.0
1.0
0
R
= 10 Ω
L
R
= 10 Ω
L
R
= ∞
L
4.0
, INPUT VOLTAGE (V)
6.0
8.0
0
2.0
4.0
, INPUT VOLTAGE (V)
6.0
8.0
0
2.0
V
V
in
in
4
MOTOROLA ANALOG IC DEVICE DATA
MC33267
Figure 5. Reset Output versus Input Voltage
Figure 6. Output Voltage versus Input Voltage
6.0
5.0
6.0
5.0
T
= 25°C
J
R
T
= 10 k to V
L
O
= 25°C
J
R
= ∞
L
4.0
3.0
2.0
1.0
0
4.0
3.0
2.0
1.0
0
R
= 10 Ω
L
R
= 10 Ω
L
R
= ∞
L
4.0
, INPUT VOLTAGE (V)
6.0
8.0
0
2.0
4.0
, INPUT VOLTAGE (V)
6.0
8.0
0
2.0
V
V
in
in
2
Figure 7. D PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
80
3.5
P
for T = 50°C
A
D(max)
70
3.0
Free Air
Mounted
Vertically
2.0 oz. Copper
L
60
50
40
30
2.5
2.0
1.5
1.0
Minimum
Size Pad
L
R
θ
JA
0
5.0
10
15
20
25
30
L, LENGTH OF COPPER (mm)
5
MOTOROLA ANALOG IC DEVICE DATA
MC33267
OUTLINE DIMENSIONS
T SUFFIX
PLASTIC PACKAGE
CASE 314D–03
(TO–220 TYPE)
ISSUE D
SEATING
–T–
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
PLANE
C
Y14.5M, 1982.
–Q–
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION D DOES NOT INCLUDE
INTERCONNECT BAR (DAMBAR) PROTRUSION.
DIMENSION D INCLUDING PROTRUSION SHALL
NOT EXCEED 10.92 (0.043) MAXIMUM.
B
E
U
INCHES
MIN MAX
0.613 14.529 15.570
MILLIMETERS
MIN MAX
A
S
DIM
A
B
C
D
E
G
H
J
K
L
Q
U
S
L
0.572
0.390
0.170
0.025
0.048
0.415
0.180
0.038
0.055
9.906 10.541
1
2
3
4 5
4.318
0.635
1.219
4.572
0.965
1.397
K
0.067 BSC
1.702 BSC
0.087
0.015
1.020
0.320
0.140
0.105
0.543
0.112
0.025
2.210
0.381
2.845
0.635
1.065 25.908 27.051
0.365
0.153
0.117
8.128
3.556
2.667
9.271
3.886
2.972
J
G
0.582 13.792 14.783
H
D 5 PL
0.356 (0.014)
M
M
T
Q
TV SUFFIX
PLASTIC PACKAGE
CASE 314B–05
(TO–220 TYPE)
ISSUE J
NOTES:
C
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION D DOES NOT INCLUDE
INTERCONNECT BAR (DAMBAR) PROTRUSION.
DIMENSION D INCLUDING PROTRUSION SHALL
NOT EXCEED 0.043 (1.092) MAXIMUM.
B
–P–
OPTIONAL
CHAMFER
Q
F
E
A
INCHES
MIN MAX
0.613 14.529 15.570
MILLIMETERS
MIN MAX
U
DIM
A
B
C
D
E
L
S
V
0.572
0.390
0.170
0.025
0.048
0.850
W
0.415
0.180
0.038
0.055
9.906 10.541
K
4.318
0.635
1.219
4.572
0.965
1.397
F
0.935 21.590 23.749
G
H
J
K
L
N
Q
S
0.067 BSC
0.166 BSC
1.702 BSC
4.216 BSC
0.015
0.900
0.320
0.025
0.381
0.635
1.100 22.860 27.940
0.365
5X J
8.128
8.128 BSC
3.556
9.271
3.886
G
M
0.24 (0.610)
T
H
0.320 BSC
5X D
0.140
–––
0.153
0.620
––– 15.748
N
M
M
0.10 (0.254)
T
P
U
V
W
0.468
–––
0.090
0.505 11.888 12.827
0.735
0.110
––– 18.669
2.286 2.794
SEATING
PLANE
–T–
6
MOTOROLA ANALOG IC DEVICE DATA
MC33267
OUTLINE DIMENSIONS
D2T SUFFIX
PLASTIC PACKAGE
CASE 936A–02
2
(D PAK)
ISSUE A
NOTES:
1
DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
–T–
TERMINAL 6
2
3
CONTROLLING DIMENSION: INCH.
TAB CONTOUR OPTIONAL WITHIN DIMENSIONS
A AND K.
DIMENSIONS U AND V ESTABLISH A MINIMUM
MOUNTING SURFACE FOR TERMINAL 6.
DIMENSIONS A AND B DO NOT INCLUDE MOLD
FLASH OR GATE PROTRUSIONS. MOLD FLASH
AND GATE PROTRUSIONS NOT TO EXCEED
0.025 (0.635) MAXIMUM.
OPTIONAL
CHAMFER
A
E
U
4
5
S
K
V
B
H
1
2
3
4 5
INCHES
MILLIMETERS
MIN MAX
9.804 10.236
M
L
DIM
A
B
C
D
E
MIN
MAX
0.403
0.368
0.180
0.036
0.055
0.386
0.356
0.170
0.026
0.045
9.042
4.318
0.660
1.143
9.347
4.572
0.914
1.397
D
P
N
M
0.010 (0.254)
T
G
R
G
H
K
L
M
N
P
R
S
U
V
0.067 BSC
0.539
0.050 REF
1.702 BSC
0.579 13.691 14.707
1.270 REF
0.000
0.088
0.018
0.058
5
0.010
0.102
0.026
0.078
0.000
0.254
2.591
0.660
1.981
2.235
0.457
1.473
5
C
REF
REF
0.116 REF
0.200 MIN
0.250 MIN
2.946 REF
5.080 MIN
6.350 MIN
7
MOTOROLA ANALOG IC DEVICE DATA
MC33267
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specificallydisclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
datasheetsand/orspecificationscananddovaryindifferentapplicationsandactualperformancemayvaryovertime. Alloperatingparameters,including“Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applicationsintended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
ordeathmayoccur. ShouldBuyerpurchaseoruseMotorolaproductsforanysuchunintendedorunauthorizedapplication,BuyershallindemnifyandholdMotorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arisingoutof,directlyorindirectly,anyclaimofpersonalinjuryordeathassociatedwithsuchunintendedorunauthorizeduse,evenifsuchclaimallegesthatMotorola
was negligent regarding the design or manufacture of the part. Motorola and
Opportunity/Affirmative Action Employer.
re registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
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MC33267/D
◊
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