MC34063AMEL [ROCHESTER]
1.5A SWITCHING REGULATOR, 100kHz SWITCHING FREQ-MAX, PDSO8, EIAJ, PLASTIC, SO-8;
| 型号： | MC34063AMEL |
| 厂家： | 
Rochester Electronics |
| 描述： | 1.5A SWITCHING REGULATOR, 100kHz SWITCHING FREQ-MAX, PDSO8, EIAJ, PLASTIC, SO-8 开关 光电二极管 |
| 文件： | 总17页 (文件大小：833K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MC34063A, MC33063A
DC-to-DC Converter
Control Circuits
The MC34063A Series is a monolithic control circuit containing the
primary functions required for DC–to–DC converters. These devices
consist of an internal temperature compensated reference, comparator,
controlled duty cycle oscillator with an active current limit circuit,
driver and high current output switch. This series was specifically
designed to be incorporated in Step–Down and Step–Up and
Voltage–Inverting applications with a minimum number of external
components. Refer to Application Notes AN920A/D and AN954/D
for additional design information.
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PDIP–8
P, P1 SUFFIX
CASE 626
8
1
• Operation from 3.0 V to 40 V Input
• Low Standby Current
• Current Limiting
• Output Switch Current to 1.5 A
• Output Voltage Adjustable
• Frequency Operation to 100 kHz
• Precision 2% Reference
SO–8
D SUFFIX
CASE 751
8
8
1
SOEIAJ–8
M SUFFIX
CASE 968
1
PIN CONNECTIONS
Switch
Collector
Driver
Collector
8
7
6
5
1
2
3
4
Switch
Emitter
I
pk
Sense
Representative Schematic Diagram
Timing
Capacitor
V
CC
Comparator
Inverting
Input
1
8
7
6
Gnd
Drive
Collector
Switch
Collector
Q2
S Q
R
(Top View)
Q1
100
I
pk
Sense
2
3
Switch
Emitter
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
I
pk
Oscillator
C
T
Timing
Capacitor
V
CC
Comparator
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 11 of this data sheet.
1.25 V
Reference
Regulator
+
-
5
4
Comparator
Inverting
Input
Gnd
(Bottom View)
This device contains 51 active transistors.
Semiconductor Components Industries, LLC, 2000
1
Publication Order Number:
August, 2000 – Rev. 6
MC34063A/D
MC34063A, MC33063A
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
mA
A
Power Supply Voltage
V
CC
40
Comparator Input Voltage Range
Switch Collector Voltage
V
IR
–0.3 to +40
V
V
40
40
C(switch)
E(switch)
Switch Emitter Voltage (V
= 40 V)
Pin 1
Switch Collector to Emitter Voltage
Driver Collector Voltage
V
40
CE(switch)
V
40
C(driver)
C(driver)
Driver Collector Current (Note 1.)
Switch Current
I
100
1.5
I
SW
Power Dissipation and Thermal Characteristics
Plastic Package, P, P1 Suffix
T = 25°C
Thermal Resistance
P
1.25
100
W
°C/W
A
D
R
θ
JA
SOIC Package, D Suffix
T = 25°C
Thermal Resistance
P
625
160
W
°C/W
A
D
R
θ
JA
J
Operating Junction Temperature
T
+150
°C
°C
Operating Ambient Temperature Range
MC34063A
MC33063AV
T
A
0 to +70
–40 to +125
–40 to +85
MC33063A
Storage Temperature Range
T
stg
–65 to +150
°C
1. Maximum package power dissipation limits must be observed.
2. ESD data available upon request.
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2
MC34063A, MC33063A
ELECTRICAL CHARACTERISTICS (V = 5.0 V, T = T to T [Note 3.], unless otherwise specified.)
high
CC
A
low
Characteristics
Symbol
Min
Typ
Max
Unit
OSCILLATOR
Frequency (V
= 0 V, C = 1.0 nF, T = 25°C)
f
24
24
33
35
42
42
kHz
µA
µA
–
Pin 5
T
A
osc
Charge Current (V = 5.0 V to 40 V, T = 25°C)
I
CC
A
chg
Discharge Current (V = 5.0 V to 40 V, T = 25°C)
I
dischg
140
5.2
250
220
6.5
300
260
7.5
350
CC
A
Discharge to Charge Current Ratio (Pin 7 to V , T = 25°C)
I /I
dischg chg
CC
A
Current Limit Sense Voltage (I
= I
dischg
, T = 25°C)
A
V
ipk(sense)
mV
chg
OUTPUT SWITCH (Note 4.)
Saturation Voltage, Darlington Connection
(I = 1.0 A, Pins 1, 8 connected)
V
V
–
–
1.0
1.3
0.7
V
V
CE(sat)
SW
Saturation Voltage (Note 5.)
(I = 1.0 A, R = 82 Ω to V , Forced β ] 20)
0.45
CE(sat)
SW
Pin 8
CC
DC Current Gain (I
= 1.0 A, V = 5.0 V, T = 25°C)
h
FE
50
–
75
–
–
SW
CE
A
Collector Off–State Current (V = 40 V)
I
0.01
100
µA
CE
C(off)
COMPARATOR
Threshold Voltage
V
th
V
T = 25°C
1.225
1.21
1.25
–
1.275
1.29
A
T = T
to T
high
A
low
Threshold Voltage Line Regulation (V = 3.0 V to 40 V)
Reg
mV
CC
line
MC33063A, MC34063A
MC33363AV
–
–
1.4
1.4
5.0
6.0
Input Bias Current (V = 0 V)
I
IB
–
–20
–400
nA
in
TOTAL DEVICE
Supply Current (V = 5.0 V to 40 V, C = 1.0 nF, Pin 7 = V
,
I
CC
–
–
4.0
mA
CC
T
CC
V
Pin 5
> V , Pin 2 = Gnd, remaining pins open)
th
3. T = 0°C for MC34063A, –40°C for MC33063A, AV
T
high
= +70°C for MC34063A, +85°C for MC33063A, +125°C for MC33063AV
low
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
5. If the output switch is driven into hard saturation (non–Darlington configuration) at low switch currents (≤ 300 mA) and high driver currents
(≥ 30 mA), it may take up to 2.0 µs for it to come out of saturation. This condition will shorten the off time at frequencies ≥ 30 kHz, and is
magnified at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a
non–Darlington configuration is used, the following output drive condition is recommended:
I
output
C
Forced b of output switch :
w 10
I
driver – 7.0 mA *
C
* The 100 Ω resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
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3
MC34063A, MC33063A
1000
V
CC
Pin 7 = V
= 5.0 V
500
200
100
50
CC
Pin 5 = Gnd
T = 25°C
A
t
on
20
10
5.0
2.0
1.0
V
CC
Pin 7 = V
Pin 2 = Gnd
= 5.0 V
Pins 1, 5, 8 = Open
C = 1.0 nF
T = 25°C
A
t
off
CC
T
0.01 0.02
0.05 0.1 0.2
0.5 1.0 2.0
5.0 10
10 µs/DIV
C , OSCILLATOR TIMING CAPACITOR (nF)
T
Figure 1. Output Switch On–Off Time versus
Oscillator Timing Capacitor
Figure 2. Timing Capacitor Waveform
1.1
1.0
0.9
0.8
0.7
0.6
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
Darlington Connection
V
CC
Pin 7 = V
= 5.0 V
0.5
0.4
0.3
0.2
CC
Forced β = 20
Pins 2, 3, 5 = Gnd
T = 25°C
V
= 5.0 V
Pins 1, 7, 8 = V
A
(See Note 6.)
CC
CC
Pins 3, 5 = Gnd
T = 25°C
A
(See Note 6.)
0.1
0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
I , EMITTER CURRENT (A)
E
I , COLLECTOR CURRENT(A)
C
Figure 3. Emitter Follower Configuration Output
Saturation Voltage versus Emitter Current
Figure 4. Common Emitter Configuration Output
Switch Saturation Voltage versus
Collector Current
3.6
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
400
380
V
= 5.0 V
= I
CC
360
340
I
chg dischg
320
300
280
260
240
220
200
C = 1.0 nF
T
Pin 7 = V
CC
Pin 2 = Gnd
0
5.0
10
15
20
25
30
35
40
-55
-25
0
25
50
75
100
125
T , AMBIENT TEMPERATURE (°C)
A
V
CC
, SUPPLY VOLTAGE (V)
Figure 5. Current Limit Sense Voltage
versus Temperature
Figure 6. Standby Supply Current versus
Supply Voltage
6. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
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4
MC34063A, MC33063A
170 µH
L
8
7
1
180
S
R
Q
Q2
Q1
2
1N5819
I
pk
C
R
sc
0.22
T
Osc
3
6
5
V
in
12 V
V
CC
C
T
+
100
1.25 V
Ref
Reg
+
-
Comp.
1500
pF
4
1.0 µH
R2
47 k
V
out
28 V/175 mA
V
out
+
+
R1 2.2 k
100
330
C
O
Optional Filter
Test
Conditions
= 8.0 V to 16 V, I = 175 mA
Results
Line Regulation
Load Regulation
Output Ripple
Efficiency
V
in
V
in
V
in
V
in
V
in
30 mV = ±0.05%
10 mV = ±0.017%
400 mVpp
O
= 12 V, I = 75 mA to 175 mA
O
= 12 V, I = 175 mA
O
= 12 V, I = 175 mA
87.7%
O
Output Ripple With Optional Filter
= 12 V, I = 175 mA
40 mVpp
O
Figure 7. Step–Up Converter
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5
MC34063A, MC33063A
R
V
out
V
out
8
7
6
1
2
8
7
6
1
2
R
sc
R
sc
V
in
V
in
R ³ 0 for
constant V
in
Figure 8. External Current Boost Connections for IC Peak Greater than 1.5 A
8a. External NPN Switch
8b. External NPN Saturated Switch
(See Note 7.)
7. If the output switch is driven into hard saturation (non–Darlington configuration) at low switch currents (≤ 300 mA) and high driver currents
(≥30 mA), it may take up to 2.0 µs to come out of saturation. This condition will shorten the off time at frequencies ≥ 30 kHz, and is magnified
at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a
non–Darlington configuration is used, the following output drive condition is recommended.
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6
MC34063A, MC33063A
8
7
6
1
S
R
Q
Q2
Q1
2
I
pk
R
sc
0.33
C
T
Osc
1N5819
3
V
in
25 V
V
CC
L
220 µH
C
+
T
100
1.25 V
Ref
Reg
+
-
Comp.
470
pF
5
4
1.0 µH
V
R2
out
5.0 V/500 mA
V
out
3.6 k
+
+
R1 1.2 k
100
470
C
O
Optional Filter
Test
Conditions
= 15 V to 25 V, I = 500 mA
Results
Line Regulation
Load Regulation
Output Ripple
V
in
V
in
V
in
V
in
V
in
V
in
12 mV = ±0.12%
3.0 mV = ±0.03%
120 mVpp
1.1 A
O
= 25 V, I = 50 mA to 500 mA
O
= 25 V, I = 500 mA
O
Short Circuit Current
Efficiency
= 25 V, R = 0.1 Ω
L
= 25 V, I = 500 mA
83.7%
O
Output Ripple With Optional Filter
= 25 V, I = 500 mA
40 mVpp
O
Figure 9. Step–Down Converter
1
2
8
7
6
1
2
V
8
7
V
out
R
sc
R
sc
V
in
V
in
6
Figure 10. External Current Boost Connections for IC Peak Greater than 1.5 A
10a. External NPN Switch 10b. External PNP Saturated Switch
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7
MC34063A, MC33063A
8
1
S
R
Q
Q2
Q1
7
6
2
3
I
88 µH
L
+
pk
R
sc
0.24
C
T
Osc
V
in
4.5 V to 6.0 V
V
CC
+
100
1.25 V
Ref
Reg
1500
pF
+
-
1N5819
Comp.
5
4
1.0 µH
R1
V
out
-12 V/100 mA
V
out
953
1000 µf
100
C
O
R2 8.2 k
+
+
Optional Filter
Test
Conditions
= 4.5 V to 6.0 V, I = 100 mA
Results
Line Regulation
Load Regulation
Output Ripple
V
in
V
in
V
in
V
in
V
in
V
in
3.0 mV = ±0.012%
0.022 V = ±0.09%
500 mVpp
O
= 5.0 V, I = 10 mA to 100 mA
O
= 5.0 V, I = 100 mA
O
Short Circuit Current
Efficiency
= 5.0 V, R = 0.1 Ω
910 mA
L
= 5.0 V, I = 100 mA
62.2%
O
Output Ripple With Optional Filter
= 5.0 V, I = 100 mA
70 mVpp
O
Figure 11. Voltage Inverting Converter
8
7
6
1
2
1
2
V
out
8
7
V
out
V
in
V
in
6
Figure 12. External Current Boost Connections for IC Peak Greater than 1.5 A
12a. External NPN Switch 12b. External PNP Saturated Switch
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8
MC34063A, MC33063A
5.45′′
2.500′′
(Top view, copper foil as seen through the board from the component side)
MC34063A
MC34063A
MC34063A
(Top View, Component Side)
*Optional Filter.
Figure 13. Printed Circuit Board and Component Layout
(Circuits of Figures 7, 9, 11)
INDUCTOR DATA
Converter
Step–Up
Inductance (µH)
Turns/Wire
170
220
88
38 Turns of #22 AWG
48 Turns of #22 AWG
28 Turns of #22 AWG
Step–Down
Voltage–Inverting
All inductors are wound on Magnetics Inc. 55117 toroidal core.
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9
MC34063A, MC33063A
Calculation
/t
Step–Up
Step–Down
Voltage–Inverting
t
V
) V * V
V
) V
|V | ) V
on off
out
out
out
F
F
in(min)
sat
F
V
* V
* V
V
* V
V
* V
sat
out
sat
in(min)
in
in(min)
(t + t
)
1
f
1
f
1
f
on
off
t
t
) t
t
) t
t
) t
off
on
t
on
on
t
off
off
) 1
off
t
t
on
on
off
on
) 1
) 1
t
t
off
(t + t ) – t
off
t
on
(t + t ) – t
on
(t + t ) – t
on
on
off
–5
off
off
off
off
–5
off
–5
C
4.0 x 10
t
on
4.0 x 10
t
on
4.0 x 10
t
on
T
I
pk(switch)
t
t
on
on
2I
ǒ Ǔ
ǒ Ǔ
2I
) 1
2I
) 1
out(max)
out(max)
out(max)
t
t
off
off
R
0.3/I
0.3/I
0.3/I
sc
pk(switch)
pk(switch)
pk(switch)
L
(min)
(V
* V
)
(V
* V
* V
)
(V
* V
)
sat
sat
out
sat
in(min)
I
in(min)
I
in(min)
I
t
t
t
ǒ
Ǔ ǒ
Ǔ ǒ
Ǔ
on(max)
on(max)
on(max)
pk(switch)
pk(switch)
(t
pk(switch)
C
I
t
I
) t
)
I
t
O
on
on
on
out
out
pk(switch)
8V
off
9
9
V
V
ripple(pp)
ripple(pp)
ripple(pp)
V
sat
= Saturation voltage of the output switch.
V = Forward voltage drop of the output rectifier.
F
The following power supply characteristics must be chosen:
V
– Nominal input voltage.
|V
– Desired output voltage,
– Desired output current.
– Minimum desired output switching frequency at the selected values of V and I .
in
R2
R1
| + 1.25 ǒ1 )
Ǔ
V
out
out
I
f
out
min
in
O
V
– Desired peak–to–peak output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its
equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the
line and load regulation.
ripple(pp)
NOTE: For further information refer to Application Note AN920A/D and AN954/D.
Figure 14. Design Formula Table
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10
MC34063A, MC33063A
ORDERING INFORMATION
Device
MC33063AD
Package
SO–8
Shipping
98 Units / Rail
MC33063ADR2
MC33063AP1
MC33063AVD
MC33063AVDR2
MC33063AVP
MC34063AD
SO–8
2500 Units / Tape & Reel
50 Units / Rail
DIP–8
SO–8
98 Units / Rail
SO–8
2500 Units / Tape & Reel
50 Units / Rail
DIP–8
SO–8
98 Units / Rail
MC34063ADR2
MC34063AP1
MC34063BD
SO–8
2500 Units / Tape & Reel
50 Units / Rail
DIP–8
SO–8
98 Units / Rail
MC34063BDR2
MC34063AM
SO–8
2500 Units / Tape & Reel
94 Units / Rail
SOEIAJ–8
SOEIAJ–8
SOEIAJ–8
SOEIAJ–8
SOEIAJ–8
SOEIAJ–8
MC34063AMEL
MC34063AML1
MC34063AML2
MC34063AMR1
MC34063AMR2
1000 Units / Tape & Reel
1000 Units / Tape & Reel
2000 Units / Tape & Reel
1000 Units / Tape & Reel
2000 Units / Tape & Reel
MARKING DIAGRAMS
SO–8
PDIP–8
P, P1 SUFFIX
CASE 626
PDIP–8
P, P1 SUFFIX
CASE 626
SO–8
D SUFFIX
CASE 751
SOEIAJ–8
M SUFFIX
CASE 968
D SUFFIX
CASE 751
8
8
8
8
1
8
3x063AP1
AWL
YYWW
33063AVP
AWL
YYWW
3x063
ALYWz
34063
ALYWz
M063A
ALYW
1
1
1
1
x
=
3 or 4
z
=
A denotes AD suffix
J denotes BD suffix
Assembly Location
Wafer Lot
Year
Work Week
A
=
=
=
=
WL, L
YY, Y
WW, W
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11
MC34063A, MC33063A
PACKAGE DIMENSIONS
PDIP–8
P, P1 SUFFIX
PLASTIC PACKAGE
CASE 626–05
ISSUE K
8
5
4
NOTES:
–B–
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
1
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
F
MILLIMETERS
INCHES
MIN MAX
–A–
NOTE 2
DIM
A
B
C
D
F
MIN
9.40
6.10
3.94
0.38
1.02
MAX
10.16
6.60
4.45
0.51
1.78
L
0.370 0.400
0.240 0.260
0.155 0.175
0.015 0.020
0.040 0.070
0.100 BSC
0.030 0.050
0.008 0.012
0.115 0.135
0.300 BSC
C
G
H
J
2.54 BSC
1.27
0.30
3.43
0.76
0.20
2.92
J
–T–
SEATING
PLANE
N
K
L
7.62 BSC
M
Ċ
0.030
Ċ
0.76
10°
1.01
10°
0.040
M
N
D
K
G
H
M
M
M
0.13 (0.005)
A
B
T
SO–8
D SUFFIX
PLASTIC PACKAGE
CASE 751–06
ISSUE T
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
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.
D
A
E
C
8
5
M
M
0.25
B
H
1
4
h X 45
_
MILLIMETERS
q
B
C
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
SEATING
PLANE
L
e
1.27 BSC
0.10
H
h
5.80
0.25
0.40
0
6.20
0.50
1.25
7
A1
B
L
M
S
S
A
0.25
C
B
q
_
_
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12
MC34063A, MC33063A
SOEIAJ–8
M SUFFIX
PLASTIC PACKAGE
CASE 968–01
ISSUE O
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
L
E
8
5
2. CONTROLLING DIMENSION: MILLIMETER
3. DIMENSION D AND E DO NOT INCLUDE MOLD
FLASH OR PROTRUSIONS AND ARE MEASURED AT
THE PARTING LINE. MOLD FLASH OR
PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006)
PER SIDE.
Q
1
E
H
E
4. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
°
M
5. THE LEAD WIDTH DIMENSION (b) DOES NOT
INCLUDE DAMBAR PROTUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08 (0.003)
TOTAL IN EXCESS OF THE LEAD WIDTH
DIMENSION AT MAXIMUM MATERIAL CONDITION.
DAMBAR CANNOT BE LOCATED ON THE LOWER
RADIUS OR THE FOOT MINIMUM SPACE BETWEEN
PROTRUSIONS AND ADJACENT LEAD TO BE 0.46
(0.018).
1
4
L
Z
DETAIL P
D
MILLIMETERS
INCHES
MIN
e
DIM MIN
MAX
2.05
0.20
0.50
0.27
5.50
5.45
MAX
0.081
0.008
0.020
0.011
0.217
0.215
A
A
b
c
---
---
P
0.05
0.35
0.18
5.10
5.10
0.002
0.014
0.007
0.201
0.201
1
D
E
b
c
e
H
1.27 BSC
0.050 BSC
7.40
0.50
1.10
8.20
0.85
1.50
0.291
0.020
0.043
0.323
0.033
0.059
E
E
M
0.13 (0.005)
L
L
0.10 (0.004)
M
0
0.70
---
10
0.90
0.94
0
10
°
0.035
0.037
°
°
°
Q
1
0.028
---
Z
http://onsemi.com
13
MC34063A, MC33063A
Notes
http://onsemi.com
14
MC34063A, MC33063A
Notes
http://onsemi.com
15
MC34063A, MC33063A
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MC34063A/D
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